Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf.

None of these symbols should be accessed directly, so declare them as
hidden.

Signed-off-by: Mans Rullgard <mans@mansr.com>

268 files changed, 358 insertions, 358 deletions

diff --git a/libavcodec/4xm.c b/libavcodec/4xm.c
index 30c4c59..97436ce 100644
--- a/libavcodec/4xm.c
+++ b/libavcodec/4xm.c
@@ -865,7 +865,7 @@ static av_cold int decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec fourxm_decoder = {
+AVCodec ff_fourxm_decoder = {
     "4xm",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_4XM,
diff --git a/libavcodec/8bps.c b/libavcodec/8bps.c
index 292c739..4757057 100644
--- a/libavcodec/8bps.c
+++ b/libavcodec/8bps.c
@@ -219,7 +219,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
 
 
 
-AVCodec eightbps_decoder = {
+AVCodec ff_eightbps_decoder = {
         "8bps",
         AVMEDIA_TYPE_VIDEO,
         CODEC_ID_8BPS,
diff --git a/libavcodec/8svx.c b/libavcodec/8svx.c
index 66820be..3f7d3ef 100644
--- a/libavcodec/8svx.c
+++ b/libavcodec/8svx.c
@@ -92,7 +92,7 @@ static av_cold int eightsvx_decode_init(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec eightsvx_fib_decoder = {
+AVCodec ff_eightsvx_fib_decoder = {
   .name           = "8svx_fib",
   .type           = AVMEDIA_TYPE_AUDIO,
   .id             = CODEC_ID_8SVX_FIB,
@@ -102,7 +102,7 @@ AVCodec eightsvx_fib_decoder = {
   .long_name      = NULL_IF_CONFIG_SMALL("8SVX fibonacci"),
 };
 
-AVCodec eightsvx_exp_decoder = {
+AVCodec ff_eightsvx_exp_decoder = {
   .name           = "8svx_exp",
   .type           = AVMEDIA_TYPE_AUDIO,
   .id             = CODEC_ID_8SVX_EXP,
diff --git a/libavcodec/a64multienc.c b/libavcodec/a64multienc.c
index fa1209e..aed28ad 100644
--- a/libavcodec/a64multienc.c
+++ b/libavcodec/a64multienc.c
@@ -362,7 +362,7 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
     return 0;
 }
 
-AVCodec a64multi_encoder = {
+AVCodec ff_a64multi_encoder = {
     .name           = "a64multi",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_A64_MULTI,
@@ -375,7 +375,7 @@ AVCodec a64multi_encoder = {
     .capabilities   = CODEC_CAP_DELAY,
 };
 
-AVCodec a64multi5_encoder = {
+AVCodec ff_a64multi5_encoder = {
     .name           = "a64multi5",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_A64_MULTI5,
diff --git a/libavcodec/aac_adtstoasc_bsf.c b/libavcodec/aac_adtstoasc_bsf.c
index 9b615e6..6558c02 100644
--- a/libavcodec/aac_adtstoasc_bsf.c
+++ b/libavcodec/aac_adtstoasc_bsf.c
@@ -107,7 +107,7 @@ static int aac_adtstoasc_filter(AVBitStreamFilterContext *bsfc,
     return 0;
 }
 
-AVBitStreamFilter aac_adtstoasc_bsf = {
+AVBitStreamFilter ff_aac_adtstoasc_bsf = {
     "aac_adtstoasc",
     sizeof(AACBSFContext),
     aac_adtstoasc_filter,
diff --git a/libavcodec/aac_parser.c b/libavcodec/aac_parser.c
index 3ad4610..9165178 100644
--- a/libavcodec/aac_parser.c
+++ b/libavcodec/aac_parser.c
@@ -60,7 +60,7 @@ static av_cold int aac_parse_init(AVCodecParserContext *s1)
 }
 
 
-AVCodecParser aac_parser = {
+AVCodecParser ff_aac_parser = {
     { CODEC_ID_AAC },
     sizeof(AACAC3ParseContext),
     aac_parse_init,
diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index e6d32f4..fd65b1c 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -2351,7 +2351,7 @@ av_cold static int latm_decode_init(AVCodecContext *avctx)
 }
 
 
-AVCodec aac_decoder = {
+AVCodec ff_aac_decoder = {
     "aac",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_AAC,
@@ -2372,7 +2372,7 @@ AVCodec aac_decoder = {
     in MPEG transport streams which only contain one program.
     To do a more complex LATM demuxing a separate LATM demuxer should be used.
 */
-AVCodec aac_latm_decoder = {
+AVCodec ff_aac_latm_decoder = {
     .name = "aac_latm",
     .type = CODEC_TYPE_AUDIO,
     .id   = CODEC_ID_AAC_LATM,
diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c
index 120f873..50dab1c 100644
--- a/libavcodec/aacenc.c
+++ b/libavcodec/aacenc.c
@@ -641,7 +641,7 @@ static av_cold int aac_encode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec aac_encoder = {
+AVCodec ff_aac_encoder = {
     "aac",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_AAC,
diff --git a/libavcodec/aasc.c b/libavcodec/aasc.c
index 82bd2bf..44bdcb0 100644
--- a/libavcodec/aasc.c
+++ b/libavcodec/aasc.c
@@ -109,7 +109,7 @@ static av_cold int aasc_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec aasc_decoder = {
+AVCodec ff_aasc_decoder = {
     "aasc",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_AASC,
diff --git a/libavcodec/ac3_parser.c b/libavcodec/ac3_parser.c
index 00aa372..4737d6f 100644
--- a/libavcodec/ac3_parser.c
+++ b/libavcodec/ac3_parser.c
@@ -169,7 +169,7 @@ static av_cold int ac3_parse_init(AVCodecParserContext *s1)
 }
 
 
-AVCodecParser ac3_parser = {
+AVCodecParser ff_ac3_parser = {
     { CODEC_ID_AC3, CODEC_ID_EAC3 },
     sizeof(AACAC3ParseContext),
     ac3_parse_init,
diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c
index 33c5f74..a1e731d 100644
--- a/libavcodec/ac3dec.c
+++ b/libavcodec/ac3dec.c
@@ -1437,7 +1437,7 @@ static av_cold int ac3_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec ac3_decoder = {
+AVCodec ff_ac3_decoder = {
     .name = "ac3",
     .type = AVMEDIA_TYPE_AUDIO,
     .id = CODEC_ID_AC3,
@@ -1449,7 +1449,7 @@ AVCodec ac3_decoder = {
 };
 
 #if CONFIG_EAC3_DECODER
-AVCodec eac3_decoder = {
+AVCodec ff_eac3_decoder = {
     .name = "eac3",
     .type = AVMEDIA_TYPE_AUDIO,
     .id = CODEC_ID_EAC3,
diff --git a/libavcodec/ac3enc_fixed.c b/libavcodec/ac3enc_fixed.c
index dfd218e..90e148b 100644
--- a/libavcodec/ac3enc_fixed.c
+++ b/libavcodec/ac3enc_fixed.c
@@ -425,7 +425,7 @@ int main(void)
 #endif /* TEST */
 
 
-AVCodec ac3_fixed_encoder = {
+AVCodec ff_ac3_fixed_encoder = {
     "ac3_fixed",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_AC3,
diff --git a/libavcodec/ac3enc_float.c b/libavcodec/ac3enc_float.c
index 33e8294..8668b2e 100644
--- a/libavcodec/ac3enc_float.c
+++ b/libavcodec/ac3enc_float.c
@@ -109,7 +109,7 @@ static void scale_coefficients(AC3EncodeContext *s)
 }
 
 
-AVCodec ac3_encoder = {
+AVCodec ff_ac3_encoder = {
     "ac3",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_AC3,
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index ee2ce54..fb5bdc7 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -1708,7 +1708,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx,
 
 #if CONFIG_ENCODERS
 #define ADPCM_ENCODER(id,name,long_name_)       \
-AVCodec name ## _encoder = {                    \
+AVCodec ff_ ## name ## _encoder = {             \
     #name,                                      \
     AVMEDIA_TYPE_AUDIO,                         \
     id,                                         \
@@ -1726,7 +1726,7 @@ AVCodec name ## _encoder = {                    \
 
 #if CONFIG_DECODERS
 #define ADPCM_DECODER(id,name,long_name_)       \
-AVCodec name ## _decoder = {                    \
+AVCodec ff_ ## name ## _decoder = {             \
     #name,                                      \
     AVMEDIA_TYPE_AUDIO,                         \
     id,                                         \
diff --git a/libavcodec/adxdec.c b/libavcodec/adxdec.c
index 030f2d7..991528a 100644
--- a/libavcodec/adxdec.c
+++ b/libavcodec/adxdec.c
@@ -166,7 +166,7 @@ static int adx_decode_frame(AVCodecContext *avctx,
     return buf-buf0;
 }
 
-AVCodec adpcm_adx_decoder = {
+AVCodec ff_adpcm_adx_decoder = {
     "adpcm_adx",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_ADPCM_ADX,
diff --git a/libavcodec/adxenc.c b/libavcodec/adxenc.c
index 2200f5c..ca48f94 100644
--- a/libavcodec/adxenc.c
+++ b/libavcodec/adxenc.c
@@ -183,7 +183,7 @@ static int adx_encode_frame(AVCodecContext *avctx,
     return dst-frame;
 }
 
-AVCodec adpcm_adx_encoder = {
+AVCodec ff_adpcm_adx_encoder = {
     "adpcm_adx",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_ADPCM_ADX,
diff --git a/libavcodec/alac.c b/libavcodec/alac.c
index 3a25578..96c15ff 100644
--- a/libavcodec/alac.c
+++ b/libavcodec/alac.c
@@ -691,7 +691,7 @@ static av_cold int alac_decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec alac_decoder = {
+AVCodec ff_alac_decoder = {
     "alac",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_ALAC,
diff --git a/libavcodec/alacenc.c b/libavcodec/alacenc.c
index d9ff2b8..9d2865d 100644
--- a/libavcodec/alacenc.c
+++ b/libavcodec/alacenc.c
@@ -523,7 +523,7 @@ static av_cold int alac_encode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec alac_encoder = {
+AVCodec ff_alac_encoder = {
     "alac",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_ALAC,
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 94da5c0..04c5c6a 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -27,23 +27,23 @@
 #include "avcodec.h"
 
 #define REGISTER_HWACCEL(X,x) { \
-          extern AVHWAccel x##_hwaccel; \
-          if(CONFIG_##X##_HWACCEL) av_register_hwaccel(&x##_hwaccel); }
+          extern AVHWAccel ff_##x##_hwaccel; \
+          if(CONFIG_##X##_HWACCEL) av_register_hwaccel(&ff_##x##_hwaccel); }
 
 #define REGISTER_ENCODER(X,x) { \
-          extern AVCodec x##_encoder; \
-          if(CONFIG_##X##_ENCODER)  avcodec_register(&x##_encoder); }
+          extern AVCodec ff_##x##_encoder; \
+          if(CONFIG_##X##_ENCODER)  avcodec_register(&ff_##x##_encoder); }
 #define REGISTER_DECODER(X,x) { \
-          extern AVCodec x##_decoder; \
-          if(CONFIG_##X##_DECODER)  avcodec_register(&x##_decoder); }
+          extern AVCodec ff_##x##_decoder; \
+          if(CONFIG_##X##_DECODER)  avcodec_register(&ff_##x##_decoder); }
 #define REGISTER_ENCDEC(X,x)  REGISTER_ENCODER(X,x); REGISTER_DECODER(X,x)
 
 #define REGISTER_PARSER(X,x) { \
-          extern AVCodecParser x##_parser; \
-          if(CONFIG_##X##_PARSER)  av_register_codec_parser(&x##_parser); }
+          extern AVCodecParser ff_##x##_parser; \
+          if(CONFIG_##X##_PARSER)  av_register_codec_parser(&ff_##x##_parser); }
 #define REGISTER_BSF(X,x) { \
-          extern AVBitStreamFilter x##_bsf; \
-          if(CONFIG_##X##_BSF)     av_register_bitstream_filter(&x##_bsf); }
+          extern AVBitStreamFilter ff_##x##_bsf; \
+          if(CONFIG_##X##_BSF)     av_register_bitstream_filter(&ff_##x##_bsf); }
 
 void avcodec_register_all(void)
 {
diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c
index 116e5e2..3e415c0 100644
--- a/libavcodec/alsdec.c
+++ b/libavcodec/alsdec.c
@@ -1737,7 +1737,7 @@ static av_cold void flush(AVCodecContext *avctx)
 }
 
 
-AVCodec als_decoder = {
+AVCodec ff_als_decoder = {
     "als",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_MP4ALS,
diff --git a/libavcodec/amrnbdec.c b/libavcodec/amrnbdec.c
index a7d9fc5..ec896c7 100644
--- a/libavcodec/amrnbdec.c
+++ b/libavcodec/amrnbdec.c
@@ -1036,7 +1036,7 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
 }
 
 
-AVCodec amrnb_decoder = {
+AVCodec ff_amrnb_decoder = {
     .name           = "amrnb",
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_AMR_NB,
diff --git a/libavcodec/amrwbdec.c b/libavcodec/amrwbdec.c
index 941d065..8bf02a2 100644
--- a/libavcodec/amrwbdec.c
+++ b/libavcodec/amrwbdec.c
@@ -1225,7 +1225,7 @@ static int amrwb_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     return expected_fr_size;
 }
 
-AVCodec amrwb_decoder = {
+AVCodec ff_amrwb_decoder = {
     .name           = "amrwb",
     .type           = CODEC_TYPE_AUDIO,
     .id             = CODEC_ID_AMR_WB,
diff --git a/libavcodec/anm.c b/libavcodec/anm.c
index f384861..5b2b9df 100644
--- a/libavcodec/anm.c
+++ b/libavcodec/anm.c
@@ -183,7 +183,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec anm_decoder = {
+AVCodec ff_anm_decoder = {
     "anm",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ANM,
diff --git a/libavcodec/ansi.c b/libavcodec/ansi.c
index 8e7171c..9d6dc9d 100644
--- a/libavcodec/ansi.c
+++ b/libavcodec/ansi.c
@@ -422,7 +422,7 @@ static av_cold int decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec ansi_decoder = {
+AVCodec ff_ansi_decoder = {
     .name           = "ansi",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_ANSI,
diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c
index 4975954..b6d6f9d 100644
--- a/libavcodec/apedec.c
+++ b/libavcodec/apedec.c
@@ -883,7 +883,7 @@ static void ape_flush(AVCodecContext *avctx)
     s->samples= 0;
 }
 
-AVCodec ape_decoder = {
+AVCodec ff_ape_decoder = {
     "ape",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_APE,
diff --git a/libavcodec/assdec.c b/libavcodec/assdec.c
index 0a7fd48..c1ad0c4 100644
--- a/libavcodec/assdec.c
+++ b/libavcodec/assdec.c
@@ -52,7 +52,7 @@ static int ass_decode_frame(AVCodecContext *avctx, void *data, int *got_sub_ptr,
     return avpkt->size;
 }
 
-AVCodec ass_decoder = {
+AVCodec ff_ass_decoder = {
     .name         = "ass",
     .long_name    = NULL_IF_CONFIG_SMALL("Advanced SubStation Alpha subtitle"),
     .type         = AVMEDIA_TYPE_SUBTITLE,
diff --git a/libavcodec/assenc.c b/libavcodec/assenc.c
index c6f017c..103f2ff 100644
--- a/libavcodec/assenc.c
+++ b/libavcodec/assenc.c
@@ -57,7 +57,7 @@ static int ass_encode_frame(AVCodecContext *avctx,
     return total_len;
 }
 
-AVCodec ass_encoder = {
+AVCodec ff_ass_encoder = {
     .name         = "ass",
     .long_name    = NULL_IF_CONFIG_SMALL("Advanced SubStation Alpha subtitle"),
     .type         = AVMEDIA_TYPE_SUBTITLE,
diff --git a/libavcodec/asv1.c b/libavcodec/asv1.c
index 6b1a093..d2005ff 100644
--- a/libavcodec/asv1.c
+++ b/libavcodec/asv1.c
@@ -613,7 +613,7 @@ static av_cold int decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec asv1_decoder = {
+AVCodec ff_asv1_decoder = {
     "asv1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ASV1,
@@ -626,7 +626,7 @@ AVCodec asv1_decoder = {
     .long_name= NULL_IF_CONFIG_SMALL("ASUS V1"),
 };
 
-AVCodec asv2_decoder = {
+AVCodec ff_asv2_decoder = {
     "asv2",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ASV2,
@@ -640,7 +640,7 @@ AVCodec asv2_decoder = {
 };
 
 #if CONFIG_ASV1_ENCODER
-AVCodec asv1_encoder = {
+AVCodec ff_asv1_encoder = {
     "asv1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ASV1,
@@ -654,7 +654,7 @@ AVCodec asv1_encoder = {
 #endif
 
 #if CONFIG_ASV2_ENCODER
-AVCodec asv2_encoder = {
+AVCodec ff_asv2_encoder = {
     "asv2",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ASV2,
diff --git a/libavcodec/atrac1.c b/libavcodec/atrac1.c
index c4404f6..4de1dce 100644
--- a/libavcodec/atrac1.c
+++ b/libavcodec/atrac1.c
@@ -365,7 +365,7 @@ static av_cold int atrac1_decode_end(AVCodecContext * avctx) {
 }
 
 
-AVCodec atrac1_decoder = {
+AVCodec ff_atrac1_decoder = {
     .name = "atrac1",
     .type = AVMEDIA_TYPE_AUDIO,
     .id = CODEC_ID_ATRAC1,
diff --git a/libavcodec/atrac3.c b/libavcodec/atrac3.c
index 214cec7..3d1f990 100644
--- a/libavcodec/atrac3.c
+++ b/libavcodec/atrac3.c
@@ -1019,7 +1019,7 @@ static av_cold int atrac3_decode_init(AVCodecContext *avctx)
 }
 
 
-AVCodec atrac3_decoder =
+AVCodec ff_atrac3_decoder =
 {
     .name = "atrac3",
     .type = AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/aura.c b/libavcodec/aura.c
index 8942cdd..9041c7c 100644
--- a/libavcodec/aura.c
+++ b/libavcodec/aura.c
@@ -122,7 +122,7 @@ static av_cold int aura_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec aura2_decoder = {
+AVCodec ff_aura2_decoder = {
     "aura2",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_AURA2,
diff --git a/libavcodec/avs.c b/libavcodec/avs.c
index f65a25a..e1a66a9 100644
--- a/libavcodec/avs.c
+++ b/libavcodec/avs.c
@@ -150,7 +150,7 @@ static av_cold int avs_decode_init(AVCodecContext * avctx)
     return 0;
 }
 
-AVCodec avs_decoder = {
+AVCodec ff_avs_decoder = {
     "avs",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_AVS,
diff --git a/libavcodec/bethsoftvideo.c b/libavcodec/bethsoftvideo.c
index 0ba39e6..5b06e5f 100644
--- a/libavcodec/bethsoftvideo.c
+++ b/libavcodec/bethsoftvideo.c
@@ -130,7 +130,7 @@ static av_cold int bethsoftvid_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec bethsoftvid_decoder = {
+AVCodec ff_bethsoftvid_decoder = {
     .name = "bethsoftvid",
     .type = AVMEDIA_TYPE_VIDEO,
     .id = CODEC_ID_BETHSOFTVID,
diff --git a/libavcodec/bfi.c b/libavcodec/bfi.c
index ca72c1f..ff74233 100644
--- a/libavcodec/bfi.c
+++ b/libavcodec/bfi.c
@@ -180,7 +180,7 @@ static av_cold int bfi_decode_close(AVCodecContext * avctx)
     return 0;
 }
 
-AVCodec bfi_decoder = {
+AVCodec ff_bfi_decoder = {
     .name = "bfi",
     .type = AVMEDIA_TYPE_VIDEO,
     .id = CODEC_ID_BFI,
diff --git a/libavcodec/bink.c b/libavcodec/bink.c
index 0129403..64a10b7 100644
--- a/libavcodec/bink.c
+++ b/libavcodec/bink.c
@@ -1000,7 +1000,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec bink_decoder = {
+AVCodec ff_bink_decoder = {
     "binkvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_BINKVIDEO,
diff --git a/libavcodec/binkaudio.c b/libavcodec/binkaudio.c
index 62ff170..7f57982 100644
--- a/libavcodec/binkaudio.c
+++ b/libavcodec/binkaudio.c
@@ -286,7 +286,7 @@ static int decode_frame(AVCodecContext *avctx,
     return buf_size;
 }
 
-AVCodec binkaudio_rdft_decoder = {
+AVCodec ff_binkaudio_rdft_decoder = {
     "binkaudio_rdft",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_BINKAUDIO_RDFT,
@@ -298,7 +298,7 @@ AVCodec binkaudio_rdft_decoder = {
     .long_name = NULL_IF_CONFIG_SMALL("Bink Audio (RDFT)")
 };
 
-AVCodec binkaudio_dct_decoder = {
+AVCodec ff_binkaudio_dct_decoder = {
     "binkaudio_dct",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_BINKAUDIO_DCT,
diff --git a/libavcodec/bmp.c b/libavcodec/bmp.c
index 0c9e973..c02aac6 100644
--- a/libavcodec/bmp.c
+++ b/libavcodec/bmp.c
@@ -335,7 +335,7 @@ static av_cold int bmp_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec bmp_decoder = {
+AVCodec ff_bmp_decoder = {
     "bmp",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_BMP,
diff --git a/libavcodec/bmpenc.c b/libavcodec/bmpenc.c
index 12cb6de..d424662 100644
--- a/libavcodec/bmpenc.c
+++ b/libavcodec/bmpenc.c
@@ -149,7 +149,7 @@ static int bmp_encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_s
     return n_bytes;
 }
 
-AVCodec bmp_encoder = {
+AVCodec ff_bmp_encoder = {
     "bmp",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_BMP,
diff --git a/libavcodec/c93.c b/libavcodec/c93.c
index d713ff8..ed6e91d 100644
--- a/libavcodec/c93.c
+++ b/libavcodec/c93.c
@@ -242,7 +242,7 @@ static int decode_frame(AVCodecContext *avctx, void *data,
     return buf_size;
 }
 
-AVCodec c93_decoder = {
+AVCodec ff_c93_decoder = {
     "c93",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_C93,
diff --git a/libavcodec/cavs_parser.c b/libavcodec/cavs_parser.c
index 8e9c35b..be32345 100644
--- a/libavcodec/cavs_parser.c
+++ b/libavcodec/cavs_parser.c
@@ -97,7 +97,7 @@ static int cavsvideo_parse(AVCodecParserContext *s,
     return next;
 }
 
-AVCodecParser cavsvideo_parser = {
+AVCodecParser ff_cavsvideo_parser = {
     { CODEC_ID_CAVS },
     sizeof(ParseContext1),
     NULL,
diff --git a/libavcodec/cavsdec.c b/libavcodec/cavsdec.c
index 9845fb4..7ff1a57 100644
--- a/libavcodec/cavsdec.c
+++ b/libavcodec/cavsdec.c
@@ -709,7 +709,7 @@ static int cavs_decode_frame(AVCodecContext * avctx,void *data, int *data_size,
     }
 }
 
-AVCodec cavs_decoder = {
+AVCodec ff_cavs_decoder = {
     "cavs",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_CAVS,
diff --git a/libavcodec/cdgraphics.c b/libavcodec/cdgraphics.c
index 8afbb27..68f556b 100644
--- a/libavcodec/cdgraphics.c
+++ b/libavcodec/cdgraphics.c
@@ -367,7 +367,7 @@ static av_cold int cdg_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec cdgraphics_decoder = {
+AVCodec ff_cdgraphics_decoder = {
     "cdgraphics",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_CDGRAPHICS,
diff --git a/libavcodec/chomp_bsf.c b/libavcodec/chomp_bsf.c
index e9ac8e8..eaefaaa 100644
--- a/libavcodec/chomp_bsf.c
+++ b/libavcodec/chomp_bsf.c
@@ -40,7 +40,7 @@ static int chomp_filter(AVBitStreamFilterContext *bsfc,
 /**
  * This filter removes a string of NULL bytes from the end of a packet.
  */
-AVBitStreamFilter chomp_bsf = {
+AVBitStreamFilter ff_chomp_bsf = {
     "chomp",
     0,
     chomp_filter,
diff --git a/libavcodec/cinepak.c b/libavcodec/cinepak.c
index 8e7aa5a..52fde64 100644
--- a/libavcodec/cinepak.c
+++ b/libavcodec/cinepak.c
@@ -455,7 +455,7 @@ static av_cold int cinepak_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec cinepak_decoder = {
+AVCodec ff_cinepak_decoder = {
     "cinepak",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_CINEPAK,
diff --git a/libavcodec/cljr.c b/libavcodec/cljr.c
index 96c9bdf..36b6cbb 100644
--- a/libavcodec/cljr.c
+++ b/libavcodec/cljr.c
@@ -140,7 +140,7 @@ static av_cold int encode_init(AVCodecContext *avctx){
 }
 #endif
 
-AVCodec cljr_decoder = {
+AVCodec ff_cljr_decoder = {
     "cljr",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_CLJR,
@@ -154,7 +154,7 @@ AVCodec cljr_decoder = {
 };
 
 #if CONFIG_CLJR_ENCODER
-AVCodec cljr_encoder = {
+AVCodec ff_cljr_encoder = {
     "cljr",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_CLJR,
diff --git a/libavcodec/cook.c b/libavcodec/cook.c
index 2cbad5f..6b70560 100644
--- a/libavcodec/cook.c
+++ b/libavcodec/cook.c
@@ -1283,7 +1283,7 @@ static av_cold int cook_decode_init(AVCodecContext *avctx)
 }
 
 
-AVCodec cook_decoder =
+AVCodec ff_cook_decoder =
 {
     .name = "cook",
     .type = AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/cscd.c b/libavcodec/cscd.c
index 00867a1..82a44de 100644
--- a/libavcodec/cscd.c
+++ b/libavcodec/cscd.c
@@ -254,7 +254,7 @@ static av_cold int decode_end(AVCodecContext *avctx) {
     return 0;
 }
 
-AVCodec cscd_decoder = {
+AVCodec ff_cscd_decoder = {
     "camstudio",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_CSCD,
diff --git a/libavcodec/cyuv.c b/libavcodec/cyuv.c
index db7e690..79a8441 100644
--- a/libavcodec/cyuv.c
+++ b/libavcodec/cyuv.c
@@ -178,7 +178,7 @@ static av_cold int cyuv_decode_end(AVCodecContext *avctx)
 }
 
 #if CONFIG_AURA_DECODER
-AVCodec aura_decoder = {
+AVCodec ff_aura_decoder = {
     "aura",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_AURA,
@@ -194,7 +194,7 @@ AVCodec aura_decoder = {
 #endif
 
 #if CONFIG_CYUV_DECODER
-AVCodec cyuv_decoder = {
+AVCodec ff_cyuv_decoder = {
     "cyuv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_CYUV,
diff --git a/libavcodec/dca.c b/libavcodec/dca.c
index 1e05561..c1c70cd 100644
--- a/libavcodec/dca.c
+++ b/libavcodec/dca.c
@@ -1875,7 +1875,7 @@ static const AVProfile profiles[] = {
     { FF_PROFILE_UNKNOWN },
 };
 
-AVCodec dca_decoder = {
+AVCodec ff_dca_decoder = {
     .name = "dca",
     .type = AVMEDIA_TYPE_AUDIO,
     .id = CODEC_ID_DTS,
diff --git a/libavcodec/dca_parser.c b/libavcodec/dca_parser.c
index 01c5597..a956e75 100644
--- a/libavcodec/dca_parser.c
+++ b/libavcodec/dca_parser.c
@@ -125,7 +125,7 @@ static int dca_parse(AVCodecParserContext * s,
     return next;
 }
 
-AVCodecParser dca_parser = {
+AVCodecParser ff_dca_parser = {
     {CODEC_ID_DTS},
     sizeof(DCAParseContext),
     dca_parse_init,
diff --git a/libavcodec/dirac_parser.c b/libavcodec/dirac_parser.c
index e5b9599..0a11355 100644
--- a/libavcodec/dirac_parser.c
+++ b/libavcodec/dirac_parser.c
@@ -247,7 +247,7 @@ static void dirac_parse_close(AVCodecParserContext *s)
         av_free(pc->buffer);
 }
 
-AVCodecParser dirac_parser = {
+AVCodecParser ff_dirac_parser = {
     { CODEC_ID_DIRAC },
     sizeof(DiracParseContext),
     NULL,
diff --git a/libavcodec/dnxhd_parser.c b/libavcodec/dnxhd_parser.c
index 6149a2d..e5a5aa0 100644
--- a/libavcodec/dnxhd_parser.c
+++ b/libavcodec/dnxhd_parser.c
@@ -86,7 +86,7 @@ static int dnxhd_parse(AVCodecParserContext *s,
     return next;
 }
 
-AVCodecParser dnxhd_parser = {
+AVCodecParser ff_dnxhd_parser = {
     { CODEC_ID_DNXHD },
     sizeof(ParseContext),
     NULL,
diff --git a/libavcodec/dnxhddec.c b/libavcodec/dnxhddec.c
index 67dd7fc..d977e88 100644
--- a/libavcodec/dnxhddec.c
+++ b/libavcodec/dnxhddec.c
@@ -346,7 +346,7 @@ static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec dnxhd_decoder = {
+AVCodec ff_dnxhd_decoder = {
     "dnxhd",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DNXHD,
diff --git a/libavcodec/dnxhdenc.c b/libavcodec/dnxhdenc.c
index 8cf54c5..9f191e8 100644
--- a/libavcodec/dnxhdenc.c
+++ b/libavcodec/dnxhdenc.c
@@ -848,7 +848,7 @@ static int dnxhd_encode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec dnxhd_encoder = {
+AVCodec ff_dnxhd_encoder = {
     "dnxhd",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DNXHD,
diff --git a/libavcodec/dpcm.c b/libavcodec/dpcm.c
index 334f25d..6053a14 100644
--- a/libavcodec/dpcm.c
+++ b/libavcodec/dpcm.c
@@ -299,7 +299,7 @@ static int dpcm_decode_frame(AVCodecContext *avctx,
 }
 
 #define DPCM_DECODER(id, name, long_name_)      \
-AVCodec name ## _decoder = {                    \
+AVCodec ff_ ## name ## _decoder = {             \
     #name,                                      \
     AVMEDIA_TYPE_AUDIO,                         \
     id,                                         \
diff --git a/libavcodec/dpx.c b/libavcodec/dpx.c
index e49c969..55ae4e7 100644
--- a/libavcodec/dpx.c
+++ b/libavcodec/dpx.c
@@ -220,7 +220,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec dpx_decoder = {
+AVCodec ff_dpx_decoder = {
     "dpx",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DPX,
diff --git a/libavcodec/dsicinav.c b/libavcodec/dsicinav.c
index 4eddaac..b4e0579 100644
--- a/libavcodec/dsicinav.c
+++ b/libavcodec/dsicinav.c
@@ -343,7 +343,7 @@ static int cinaudio_decode_frame(AVCodecContext *avctx,
 }
 
 
-AVCodec dsicinvideo_decoder = {
+AVCodec ff_dsicinvideo_decoder = {
     "dsicinvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DSICINVIDEO,
@@ -356,7 +356,7 @@ AVCodec dsicinvideo_decoder = {
     .long_name = NULL_IF_CONFIG_SMALL("Delphine Software International CIN video"),
 };
 
-AVCodec dsicinaudio_decoder = {
+AVCodec ff_dsicinaudio_decoder = {
     "dsicinaudio",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_DSICINAUDIO,
diff --git a/libavcodec/dump_extradata_bsf.c b/libavcodec/dump_extradata_bsf.c
index db26349..9499d6d 100644
--- a/libavcodec/dump_extradata_bsf.c
+++ b/libavcodec/dump_extradata_bsf.c
@@ -43,7 +43,7 @@ static int dump_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx,
     return 0;
 }
 
-AVBitStreamFilter dump_extradata_bsf={
+AVBitStreamFilter ff_dump_extradata_bsf={
     "dump_extra",
     0,
     dump_extradata,
diff --git a/libavcodec/dv.c b/libavcodec/dv.c
index 564ccb3..6a49147 100644
--- a/libavcodec/dv.c
+++ b/libavcodec/dv.c
@@ -1290,7 +1290,7 @@ static int dvvideo_close(AVCodecContext *c)
 
 
 #if CONFIG_DVVIDEO_ENCODER
-AVCodec dvvideo_encoder = {
+AVCodec ff_dvvideo_encoder = {
     "dvvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DVVIDEO,
@@ -1303,7 +1303,7 @@ AVCodec dvvideo_encoder = {
 #endif // CONFIG_DVVIDEO_ENCODER
 
 #if CONFIG_DVVIDEO_DECODER
-AVCodec dvvideo_decoder = {
+AVCodec ff_dvvideo_decoder = {
     "dvvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DVVIDEO,
diff --git a/libavcodec/dvbsub.c b/libavcodec/dvbsub.c
index ea55cae..c2a1298 100644
--- a/libavcodec/dvbsub.c
+++ b/libavcodec/dvbsub.c
@@ -402,7 +402,7 @@ static int dvbsub_encode(AVCodecContext *avctx,
     return ret;
 }
 
-AVCodec dvbsub_encoder = {
+AVCodec ff_dvbsub_encoder = {
     "dvbsub",
     AVMEDIA_TYPE_SUBTITLE,
     CODEC_ID_DVB_SUBTITLE,
diff --git a/libavcodec/dvbsub_parser.c b/libavcodec/dvbsub_parser.c
index c9ccfd0..e98e185 100644
--- a/libavcodec/dvbsub_parser.c
+++ b/libavcodec/dvbsub_parser.c
@@ -179,7 +179,7 @@ static av_cold void dvbsub_parse_close(AVCodecParserContext *s)
     av_freep(&pc->packet_buf);
 }
 
-AVCodecParser dvbsub_parser = {
+AVCodecParser ff_dvbsub_parser = {
     { CODEC_ID_DVB_SUBTITLE },
     sizeof(DVBSubParseContext),
     dvbsub_parse_init,
diff --git a/libavcodec/dvbsubdec.c b/libavcodec/dvbsubdec.c
index 3e06260..aff12c8 100644
--- a/libavcodec/dvbsubdec.c
+++ b/libavcodec/dvbsubdec.c
@@ -1479,7 +1479,7 @@ static int dvbsub_decode(AVCodecContext *avctx,
 }
 
 
-AVCodec dvbsub_decoder = {
+AVCodec ff_dvbsub_decoder = {
     "dvbsub",
     AVMEDIA_TYPE_SUBTITLE,
     CODEC_ID_DVB_SUBTITLE,
diff --git a/libavcodec/dvdsub_parser.c b/libavcodec/dvdsub_parser.c
index 8f1b8d0..3bbf0dc 100644
--- a/libavcodec/dvdsub_parser.c
+++ b/libavcodec/dvdsub_parser.c
@@ -76,7 +76,7 @@ static av_cold void dvdsub_parse_close(AVCodecParserContext *s)
     av_freep(&pc->packet);
 }
 
-AVCodecParser dvdsub_parser = {
+AVCodecParser ff_dvdsub_parser = {
     { CODEC_ID_DVD_SUBTITLE },
     sizeof(DVDSubParseContext),
     dvdsub_parse_init,
diff --git a/libavcodec/dvdsubdec.c b/libavcodec/dvdsubdec.c
index ea7467f..8d08591 100644
--- a/libavcodec/dvdsubdec.c
+++ b/libavcodec/dvdsubdec.c
@@ -486,7 +486,7 @@ static int dvdsub_decode(AVCodecContext *avctx,
     return buf_size;
 }
 
-AVCodec dvdsub_decoder = {
+AVCodec ff_dvdsub_decoder = {
     "dvdsub",
     AVMEDIA_TYPE_SUBTITLE,
     CODEC_ID_DVD_SUBTITLE,
diff --git a/libavcodec/dvdsubenc.c b/libavcodec/dvdsubenc.c
index 4ee0f37..d09ac26 100644
--- a/libavcodec/dvdsubenc.c
+++ b/libavcodec/dvdsubenc.c
@@ -215,7 +215,7 @@ static int dvdsub_encode(AVCodecContext *avctx,
     return ret;
 }
 
-AVCodec dvdsub_encoder = {
+AVCodec ff_dvdsub_encoder = {
     "dvdsub",
     AVMEDIA_TYPE_SUBTITLE,
     CODEC_ID_DVD_SUBTITLE,
diff --git a/libavcodec/dxa.c b/libavcodec/dxa.c
index 62e4e0a..0015629 100644
--- a/libavcodec/dxa.c
+++ b/libavcodec/dxa.c
@@ -317,7 +317,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec dxa_decoder = {
+AVCodec ff_dxa_decoder = {
     "dxa",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DXA,
diff --git a/libavcodec/eacmv.c b/libavcodec/eacmv.c
index 4a2d7c0..6770cd1 100644
--- a/libavcodec/eacmv.c
+++ b/libavcodec/eacmv.c
@@ -205,7 +205,7 @@ static av_cold int cmv_decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec eacmv_decoder = {
+AVCodec ff_eacmv_decoder = {
     "eacmv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_CMV,
diff --git a/libavcodec/eamad.c b/libavcodec/eamad.c
index db92d6b..1dd3b79 100644
--- a/libavcodec/eamad.c
+++ b/libavcodec/eamad.c
@@ -306,7 +306,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec eamad_decoder = {
+AVCodec ff_eamad_decoder = {
     "eamad",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MAD,
diff --git a/libavcodec/eatgq.c b/libavcodec/eatgq.c
index 7a98505..6f35a15 100644
--- a/libavcodec/eatgq.c
+++ b/libavcodec/eatgq.c
@@ -243,7 +243,7 @@ static av_cold int tgq_decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec eatgq_decoder = {
+AVCodec ff_eatgq_decoder = {
     "eatgq",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_TGQ,
diff --git a/libavcodec/eatgv.c b/libavcodec/eatgv.c
index 45c6644..075405a 100644
--- a/libavcodec/eatgv.c
+++ b/libavcodec/eatgv.c
@@ -334,7 +334,7 @@ static av_cold int tgv_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec eatgv_decoder = {
+AVCodec ff_eatgv_decoder = {
     "eatgv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_TGV,
diff --git a/libavcodec/eatqi.c b/libavcodec/eatqi.c
index 7f1901d..44792f0 100644
--- a/libavcodec/eatqi.c
+++ b/libavcodec/eatqi.c
@@ -154,7 +154,7 @@ static av_cold int tqi_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec eatqi_decoder = {
+AVCodec ff_eatqi_decoder = {
     "eatqi",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_TQI,
diff --git a/libavcodec/escape124.c b/libavcodec/escape124.c
index af14e0d..5a6769d 100644
--- a/libavcodec/escape124.c
+++ b/libavcodec/escape124.c
@@ -363,7 +363,7 @@ static int escape124_decode_frame(AVCodecContext *avctx,
 }
 
 
-AVCodec escape124_decoder = {
+AVCodec ff_escape124_decoder = {
     "escape124",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ESCAPE124,
diff --git a/libavcodec/ffv1.c b/libavcodec/ffv1.c
index 83292b3..4219d62 100644
--- a/libavcodec/ffv1.c
+++ b/libavcodec/ffv1.c
@@ -1786,7 +1786,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
     return buf_size;
 }
 
-AVCodec ffv1_decoder = {
+AVCodec ff_ffv1_decoder = {
     "ffv1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FFV1,
@@ -1801,7 +1801,7 @@ AVCodec ffv1_decoder = {
 };
 
 #if CONFIG_FFV1_ENCODER
-AVCodec ffv1_encoder = {
+AVCodec ff_ffv1_encoder = {
     "ffv1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FFV1,
diff --git a/libavcodec/flac_parser.c b/libavcodec/flac_parser.c
index 4ba3203..50ad72b 100644
--- a/libavcodec/flac_parser.c
+++ b/libavcodec/flac_parser.c
@@ -673,7 +673,7 @@ static void flac_parse_close(AVCodecParserContext *c)
     av_free(fpc->wrap_buf);
 }
 
-AVCodecParser flac_parser = {
+AVCodecParser ff_flac_parser = {
     { CODEC_ID_FLAC },
     sizeof(FLACParseContext),
     flac_parse_init,
diff --git a/libavcodec/flacdec.c b/libavcodec/flacdec.c
index 18ea0ac..ece095c 100644
--- a/libavcodec/flacdec.c
+++ b/libavcodec/flacdec.c
@@ -653,7 +653,7 @@ static av_cold int flac_decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec flac_decoder = {
+AVCodec ff_flac_decoder = {
     "flac",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_FLAC,
diff --git a/libavcodec/flacenc.c b/libavcodec/flacenc.c
index 2bfe56e..7c81470 100644
--- a/libavcodec/flacenc.c
+++ b/libavcodec/flacenc.c
@@ -1326,7 +1326,7 @@ static av_cold int flac_encode_close(AVCodecContext *avctx)
 }
 
 
-AVCodec flac_encoder = {
+AVCodec ff_flac_encoder = {
     "flac",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_FLAC,
diff --git a/libavcodec/flashsv.c b/libavcodec/flashsv.c
index 394ac0f..08748c6 100644
--- a/libavcodec/flashsv.c
+++ b/libavcodec/flashsv.c
@@ -250,7 +250,7 @@ static av_cold int flashsv_decode_end(AVCodecContext *avctx)
 }
 
 
-AVCodec flashsv_decoder = {
+AVCodec ff_flashsv_decoder = {
     "flashsv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FLASHSV,
diff --git a/libavcodec/flashsvenc.c b/libavcodec/flashsvenc.c
index ff917e9..9093969 100644
--- a/libavcodec/flashsvenc.c
+++ b/libavcodec/flashsvenc.c
@@ -280,7 +280,7 @@ static av_cold int flashsv_encode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec flashsv_encoder = {
+AVCodec ff_flashsv_encoder = {
     "flashsv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FLASHSV,
diff --git a/libavcodec/flicvideo.c b/libavcodec/flicvideo.c
index b63d7d4..913617d 100644
--- a/libavcodec/flicvideo.c
+++ b/libavcodec/flicvideo.c
@@ -742,7 +742,7 @@ static av_cold int flic_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec flic_decoder = {
+AVCodec ff_flic_decoder = {
     "flic",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FLIC,
diff --git a/libavcodec/flvdec.c b/libavcodec/flvdec.c
index f53291d..b1a7578 100644
--- a/libavcodec/flvdec.c
+++ b/libavcodec/flvdec.c
@@ -118,7 +118,7 @@ int ff_flv_decode_picture_header(MpegEncContext *s)
     return 0;
 }
 
-AVCodec flv_decoder = {
+AVCodec ff_flv_decoder = {
     "flv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FLV1,
diff --git a/libavcodec/flvenc.c b/libavcodec/flvenc.c
index bf320f2..5e81dcb 100644
--- a/libavcodec/flvenc.c
+++ b/libavcodec/flvenc.c
@@ -84,7 +84,7 @@ void ff_flv2_encode_ac_esc(PutBitContext *pb, int slevel, int level, int run, in
     }
 }
 
-AVCodec flv_encoder = {
+AVCodec ff_flv_encoder = {
     "flv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FLV1,
diff --git a/libavcodec/fraps.c b/libavcodec/fraps.c
index 9786fd0..0938ccd 100644
--- a/libavcodec/fraps.c
+++ b/libavcodec/fraps.c
@@ -355,7 +355,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
 }
 
 
-AVCodec fraps_decoder = {
+AVCodec ff_fraps_decoder = {
     "fraps",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FRAPS,
diff --git a/libavcodec/frwu.c b/libavcodec/frwu.c
index b685248..306166b 100644
--- a/libavcodec/frwu.c
+++ b/libavcodec/frwu.c
@@ -109,7 +109,7 @@ static av_cold int decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec frwu_decoder = {
+AVCodec ff_frwu_decoder = {
     "FRWU",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FRWU,
diff --git a/libavcodec/g722.c b/libavcodec/g722.c
index 96a2bd6..0efc390 100644
--- a/libavcodec/g722.c
+++ b/libavcodec/g722.c
@@ -328,7 +328,7 @@ static int g722_decode_frame(AVCodecContext *avctx, void *data,
     return avpkt->size;
 }
 
-AVCodec adpcm_g722_decoder = {
+AVCodec ff_adpcm_g722_decoder = {
     .name           = "g722",
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_ADPCM_G722,
@@ -568,7 +568,7 @@ static int g722_encode_frame(AVCodecContext *avctx,
     return i;
 }
 
-AVCodec adpcm_g722_encoder = {
+AVCodec ff_adpcm_g722_encoder = {
     .name           = "g722",
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_ADPCM_G722,
diff --git a/libavcodec/g726.c b/libavcodec/g726.c
index 52ebda6..30bd96fc 100644
--- a/libavcodec/g726.c
+++ b/libavcodec/g726.c
@@ -391,7 +391,7 @@ static int g726_decode_frame(AVCodecContext *avctx,
 }
 
 #if CONFIG_ADPCM_G726_ENCODER
-AVCodec adpcm_g726_encoder = {
+AVCodec ff_adpcm_g726_encoder = {
     "g726",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_ADPCM_G726,
@@ -406,7 +406,7 @@ AVCodec adpcm_g726_encoder = {
 };
 #endif
 
-AVCodec adpcm_g726_decoder = {
+AVCodec ff_adpcm_g726_decoder = {
     "g726",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_ADPCM_G726,
diff --git a/libavcodec/g729dec.c b/libavcodec/g729dec.c
index 3a6fb0f..8a35bdc 100644
--- a/libavcodec/g729dec.c
+++ b/libavcodec/g729dec.c
@@ -312,7 +312,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     return buf_size;
 }
 
-AVCodec g729_decoder =
+AVCodec ff_g729_decoder =
 {
     "g729",
     AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/gif.c b/libavcodec/gif.c
index a52f140..218b80b 100644
--- a/libavcodec/gif.c
+++ b/libavcodec/gif.c
@@ -166,7 +166,7 @@ static int gif_encode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec gif_encoder = {
+AVCodec ff_gif_encoder = {
     "gif",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_GIF,
diff --git a/libavcodec/gifdec.c b/libavcodec/gifdec.c
index 9820a06..5a5e562 100644
--- a/libavcodec/gifdec.c
+++ b/libavcodec/gifdec.c
@@ -325,7 +325,7 @@ static av_cold int gif_decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec gif_decoder = {
+AVCodec ff_gif_decoder = {
     "gif",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_GIF,
diff --git a/libavcodec/gsmdec.c b/libavcodec/gsmdec.c
index b316810..4ce36b4 100644
--- a/libavcodec/gsmdec.c
+++ b/libavcodec/gsmdec.c
@@ -84,7 +84,7 @@ static int gsm_decode_frame(AVCodecContext *avctx, void *data,
     return avctx->block_align;
 }
 
-AVCodec gsm_decoder = {
+AVCodec ff_gsm_decoder = {
     "gsm",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_GSM,
@@ -96,7 +96,7 @@ AVCodec gsm_decoder = {
     .long_name = NULL_IF_CONFIG_SMALL("GSM"),
 };
 
-AVCodec gsm_ms_decoder = {
+AVCodec ff_gsm_ms_decoder = {
     "gsm_ms",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_GSM_MS,
diff --git a/libavcodec/h261_parser.c b/libavcodec/h261_parser.c
index c32300d..defc1cb 100644
--- a/libavcodec/h261_parser.c
+++ b/libavcodec/h261_parser.c
@@ -81,7 +81,7 @@ static int h261_parse(AVCodecParserContext *s,
     return next;
 }
 
-AVCodecParser h261_parser = {
+AVCodecParser ff_h261_parser = {
     { CODEC_ID_H261 },
     sizeof(ParseContext),
     NULL,
diff --git a/libavcodec/h261dec.c b/libavcodec/h261dec.c
index 3809a01..3cc1030 100644
--- a/libavcodec/h261dec.c
+++ b/libavcodec/h261dec.c
@@ -641,7 +641,7 @@ static av_cold int h261_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec h261_decoder = {
+AVCodec ff_h261_decoder = {
     "h261",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_H261,
diff --git a/libavcodec/h261enc.c b/libavcodec/h261enc.c
index c85ee8b..cd282fb 100644
--- a/libavcodec/h261enc.c
+++ b/libavcodec/h261enc.c
@@ -321,7 +321,7 @@ static void h261_encode_block(H261Context * h, DCTELEM * block, int n){
     }
 }
 
-AVCodec h261_encoder = {
+AVCodec ff_h261_encoder = {
     "h261",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_H261,
diff --git a/libavcodec/h263_parser.c b/libavcodec/h263_parser.c
index 16c5ea5..e081983 100644
--- a/libavcodec/h263_parser.c
+++ b/libavcodec/h263_parser.c
@@ -83,7 +83,7 @@ static int h263_parse(AVCodecParserContext *s,
     return next;
 }
 
-AVCodecParser h263_parser = {
+AVCodecParser ff_h263_parser = {
     { CODEC_ID_H263 },
     sizeof(ParseContext),
     NULL,
diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c
index 04417c2..1c73d93 100644
--- a/libavcodec/h263dec.c
+++ b/libavcodec/h263dec.c
@@ -735,7 +735,7 @@ av_log(avctx, AV_LOG_DEBUG, "%"PRId64"\n", rdtsc()-time);
     return get_consumed_bytes(s, buf_size);
 }
 
-AVCodec h263_decoder = {
+AVCodec ff_h263_decoder = {
     "h263",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_H263,
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index be46315..8ef9b76 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -3360,7 +3360,7 @@ av_cold int ff_h264_decode_end(AVCodecContext *avctx)
 }
 
 
-AVCodec h264_decoder = {
+AVCodec ff_h264_decoder = {
     "h264",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_H264,
@@ -3375,7 +3375,7 @@ AVCodec h264_decoder = {
 };
 
 #if CONFIG_H264_VDPAU_DECODER
-AVCodec h264_vdpau_decoder = {
+AVCodec ff_h264_vdpau_decoder = {
     "h264_vdpau",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_H264,
diff --git a/libavcodec/h264_mp4toannexb_bsf.c b/libavcodec/h264_mp4toannexb_bsf.c
index e2ee10a..d4a7f31 100644
--- a/libavcodec/h264_mp4toannexb_bsf.c
+++ b/libavcodec/h264_mp4toannexb_bsf.c
@@ -169,7 +169,7 @@ fail:
     return AVERROR(EINVAL);
 }
 
-AVBitStreamFilter h264_mp4toannexb_bsf = {
+AVBitStreamFilter ff_h264_mp4toannexb_bsf = {
     "h264_mp4toannexb",
     sizeof(H264BSFContext),
     h264_mp4toannexb_filter,
diff --git a/libavcodec/h264_parser.c b/libavcodec/h264_parser.c
index 89523b5..51760dc 100644
--- a/libavcodec/h264_parser.c
+++ b/libavcodec/h264_parser.c
@@ -332,7 +332,7 @@ static int init(AVCodecParserContext *s)
     return 0;
 }
 
-AVCodecParser h264_parser = {
+AVCodecParser ff_h264_parser = {
     { CODEC_ID_H264 },
     sizeof(H264Context),
     init,
diff --git a/libavcodec/huffyuv.c b/libavcodec/huffyuv.c
index 7541785..2eb5864 100644
--- a/libavcodec/huffyuv.c
+++ b/libavcodec/huffyuv.c
@@ -1416,7 +1416,7 @@ static av_cold int encode_end(AVCodecContext *avctx)
 #endif /* CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER */
 
 #if CONFIG_HUFFYUV_DECODER
-AVCodec huffyuv_decoder = {
+AVCodec ff_huffyuv_decoder = {
     "huffyuv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_HUFFYUV,
@@ -1432,7 +1432,7 @@ AVCodec huffyuv_decoder = {
 #endif
 
 #if CONFIG_FFVHUFF_DECODER
-AVCodec ffvhuff_decoder = {
+AVCodec ff_ffvhuff_decoder = {
     "ffvhuff",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FFVHUFF,
@@ -1448,7 +1448,7 @@ AVCodec ffvhuff_decoder = {
 #endif
 
 #if CONFIG_HUFFYUV_ENCODER
-AVCodec huffyuv_encoder = {
+AVCodec ff_huffyuv_encoder = {
     "huffyuv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_HUFFYUV,
@@ -1462,7 +1462,7 @@ AVCodec huffyuv_encoder = {
 #endif
 
 #if CONFIG_FFVHUFF_ENCODER
-AVCodec ffvhuff_encoder = {
+AVCodec ff_ffvhuff_encoder = {
     "ffvhuff",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_FFVHUFF,
diff --git a/libavcodec/idcinvideo.c b/libavcodec/idcinvideo.c
index cc79ef0..64421db 100644
--- a/libavcodec/idcinvideo.c
+++ b/libavcodec/idcinvideo.c
@@ -253,7 +253,7 @@ static av_cold int idcin_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec idcin_decoder = {
+AVCodec ff_idcin_decoder = {
     "idcinvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_IDCIN,
diff --git a/libavcodec/iff.c b/libavcodec/iff.c
index aeff0b5..18ad700 100644
--- a/libavcodec/iff.c
+++ b/libavcodec/iff.c
@@ -367,7 +367,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec iff_ilbm_decoder = {
+AVCodec ff_iff_ilbm_decoder = {
     "iff_ilbm",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_IFF_ILBM,
@@ -380,7 +380,7 @@ AVCodec iff_ilbm_decoder = {
     .long_name = NULL_IF_CONFIG_SMALL("IFF ILBM"),
 };
 
-AVCodec iff_byterun1_decoder = {
+AVCodec ff_iff_byterun1_decoder = {
     "iff_byterun1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_IFF_BYTERUN1,
diff --git a/libavcodec/imc.c b/libavcodec/imc.c
index 272e4ee..4d7fbd1 100644
--- a/libavcodec/imc.c
+++ b/libavcodec/imc.c
@@ -821,7 +821,7 @@ static av_cold int imc_decode_close(AVCodecContext * avctx)
 }
 
 
-AVCodec imc_decoder = {
+AVCodec ff_imc_decoder = {
     .name = "imc",
     .type = AVMEDIA_TYPE_AUDIO,
     .id = CODEC_ID_IMC,
diff --git a/libavcodec/imx_dump_header_bsf.c b/libavcodec/imx_dump_header_bsf.c
index 2310185..8119809 100644
--- a/libavcodec/imx_dump_header_bsf.c
+++ b/libavcodec/imx_dump_header_bsf.c
@@ -52,7 +52,7 @@ static int imx_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx
     return 1;
 }
 
-AVBitStreamFilter imx_dump_header_bsf = {
+AVBitStreamFilter ff_imx_dump_header_bsf = {
     "imxdump",
     0,
     imx_dump_header,
diff --git a/libavcodec/indeo2.c b/libavcodec/indeo2.c
index a3d6c80..68c6246 100644
--- a/libavcodec/indeo2.c
+++ b/libavcodec/indeo2.c
@@ -224,7 +224,7 @@ static av_cold int ir2_decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec indeo2_decoder = {
+AVCodec ff_indeo2_decoder = {
     "indeo2",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_INDEO2,
diff --git a/libavcodec/indeo3.c b/libavcodec/indeo3.c
index 66ea987..5c4cd05 100644
--- a/libavcodec/indeo3.c
+++ b/libavcodec/indeo3.c
@@ -1137,7 +1137,7 @@ static av_cold int indeo3_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec indeo3_decoder = {
+AVCodec ff_indeo3_decoder = {
     "indeo3",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_INDEO3,
diff --git a/libavcodec/indeo5.c b/libavcodec/indeo5.c
index d8aab20..d96b310 100644
--- a/libavcodec/indeo5.c
+++ b/libavcodec/indeo5.c
@@ -818,7 +818,7 @@ static av_cold int decode_close(AVCodecContext *avctx)
 }
 
 
-AVCodec indeo5_decoder = {
+AVCodec ff_indeo5_decoder = {
     .name           = "indeo5",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_INDEO5,
diff --git a/libavcodec/intelh263dec.c b/libavcodec/intelh263dec.c
index 5e45129..00b15ce 100644
--- a/libavcodec/intelh263dec.c
+++ b/libavcodec/intelh263dec.c
@@ -115,7 +115,7 @@ int ff_intel_h263_decode_picture_header(MpegEncContext *s)
     return 0;
 }
 
-AVCodec h263i_decoder = {
+AVCodec ff_h263i_decoder = {
     "h263i",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_H263I,
diff --git a/libavcodec/interplayvideo.c b/libavcodec/interplayvideo.c
index 34f0557..18702b2 100644
--- a/libavcodec/interplayvideo.c
+++ b/libavcodec/interplayvideo.c
@@ -1097,7 +1097,7 @@ static av_cold int ipvideo_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec interplay_video_decoder = {
+AVCodec ff_interplay_video_decoder = {
     "interplayvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_INTERPLAY_VIDEO,
diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c
index 6b7dd94..7278e02 100644
--- a/libavcodec/jpeglsdec.c
+++ b/libavcodec/jpeglsdec.c
@@ -363,7 +363,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
 }
 
 
-AVCodec jpegls_decoder = {
+AVCodec ff_jpegls_decoder = {
     "jpegls",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_JPEGLS,
diff --git a/libavcodec/jpeglsenc.c b/libavcodec/jpeglsenc.c
index 08ef71f..ce6dc10 100644
--- a/libavcodec/jpeglsenc.c
+++ b/libavcodec/jpeglsenc.c
@@ -382,7 +382,7 @@ static av_cold int encode_init_ls(AVCodecContext *ctx) {
     return 0;
 }
 
-AVCodec jpegls_encoder = { //FIXME avoid MPV_* lossless JPEG should not need them
+AVCodec ff_jpegls_encoder = { //FIXME avoid MPV_* lossless JPEG should not need them
     "jpegls",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_JPEGLS,
diff --git a/libavcodec/kgv1dec.c b/libavcodec/kgv1dec.c
index a41d312..efc477f 100644
--- a/libavcodec/kgv1dec.c
+++ b/libavcodec/kgv1dec.c
@@ -164,7 +164,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec kgv1_decoder = {
+AVCodec ff_kgv1_decoder = {
     "kgv1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_KGV1,
diff --git a/libavcodec/kmvc.c b/libavcodec/kmvc.c
index 3e8dccd..bd628d8 100644
--- a/libavcodec/kmvc.c
+++ b/libavcodec/kmvc.c
@@ -401,7 +401,7 @@ static av_cold int decode_end(AVCodecContext * avctx)
     return 0;
 }
 
-AVCodec kmvc_decoder = {
+AVCodec ff_kmvc_decoder = {
     "kmvc",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_KMVC,
diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c
index 1bf61bd..89580dc 100644
--- a/libavcodec/lagarith.c
+++ b/libavcodec/lagarith.c
@@ -508,7 +508,7 @@ static av_cold int lag_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec lagarith_decoder = {
+AVCodec ff_lagarith_decoder = {
     "lagarith",
     CODEC_TYPE_VIDEO,
     CODEC_ID_LAGARITH,
diff --git a/libavcodec/latm_parser.c b/libavcodec/latm_parser.c
index e3134be..8e42c6a 100644
--- a/libavcodec/latm_parser.c
+++ b/libavcodec/latm_parser.c
@@ -105,7 +105,7 @@ static int latm_parse(AVCodecParserContext *s1, AVCodecContext *avctx,
     return next;
 }
 
-AVCodecParser aac_latm_parser = {
+AVCodecParser ff_aac_latm_parser = {
     { CODEC_ID_AAC_LATM },
     sizeof(LATMParseContext),
     NULL,
diff --git a/libavcodec/lcldec.c b/libavcodec/lcldec.c
index 23af511..f2e5bb0 100644
--- a/libavcodec/lcldec.c
+++ b/libavcodec/lcldec.c
@@ -609,7 +609,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
 }
 
 #if CONFIG_MSZH_DECODER
-AVCodec mszh_decoder = {
+AVCodec ff_mszh_decoder = {
     "mszh",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MSZH,
@@ -624,7 +624,7 @@ AVCodec mszh_decoder = {
 #endif
 
 #if CONFIG_ZLIB_DECODER
-AVCodec zlib_decoder = {
+AVCodec ff_zlib_decoder = {
     "zlib",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ZLIB,
diff --git a/libavcodec/lclenc.c b/libavcodec/lclenc.c
index f50b588..a90c1cf 100644
--- a/libavcodec/lclenc.c
+++ b/libavcodec/lclenc.c
@@ -170,7 +170,7 @@ static av_cold int encode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec zlib_encoder = {
+AVCodec ff_zlib_encoder = {
     "zlib",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ZLIB,
diff --git a/libavcodec/libdiracdec.c b/libavcodec/libdiracdec.c
index 0e8454e..520ec3f 100644
--- a/libavcodec/libdiracdec.c
+++ b/libavcodec/libdiracdec.c
@@ -194,7 +194,7 @@ static void libdirac_flush(AVCodecContext *avccontext)
 
 
 
-AVCodec libdirac_decoder = {
+AVCodec ff_libdirac_decoder = {
     "libdirac",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DIRAC,
diff --git a/libavcodec/libdiracenc.c b/libavcodec/libdiracenc.c
index d390aa8..a9cc680 100644
--- a/libavcodec/libdiracenc.c
+++ b/libavcodec/libdiracenc.c
@@ -391,7 +391,7 @@ static av_cold int libdirac_encode_close(AVCodecContext *avccontext)
 }
 
 
-AVCodec libdirac_encoder = {
+AVCodec ff_libdirac_encoder = {
     "libdirac",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DIRAC,
diff --git a/libavcodec/libfaac.c b/libavcodec/libfaac.c
index e042537..79ab729 100644
--- a/libavcodec/libfaac.c
+++ b/libavcodec/libfaac.c
@@ -153,7 +153,7 @@ static const AVProfile profiles[] = {
     { FF_PROFILE_UNKNOWN },
 };
 
-AVCodec libfaac_encoder = {
+AVCodec ff_libfaac_encoder = {
     "libfaac",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_AAC,
diff --git a/libavcodec/libgsm.c b/libavcodec/libgsm.c
index 77cc891..1f76f82 100644
--- a/libavcodec/libgsm.c
+++ b/libavcodec/libgsm.c
@@ -112,7 +112,7 @@ static int libgsm_encode_frame(AVCodecContext *avctx,
 }
 
 
-AVCodec libgsm_encoder = {
+AVCodec ff_libgsm_encoder = {
     "libgsm",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_GSM,
@@ -124,7 +124,7 @@ AVCodec libgsm_encoder = {
     .long_name = NULL_IF_CONFIG_SMALL("libgsm GSM"),
 };
 
-AVCodec libgsm_ms_encoder = {
+AVCodec ff_libgsm_ms_encoder = {
     "libgsm_ms",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_GSM_MS,
@@ -156,7 +156,7 @@ static int libgsm_decode_frame(AVCodecContext *avctx,
     return avctx->block_align;
 }
 
-AVCodec libgsm_decoder = {
+AVCodec ff_libgsm_decoder = {
     "libgsm",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_GSM,
@@ -168,7 +168,7 @@ AVCodec libgsm_decoder = {
     .long_name = NULL_IF_CONFIG_SMALL("libgsm GSM"),
 };
 
-AVCodec libgsm_ms_decoder = {
+AVCodec ff_libgsm_ms_decoder = {
     "libgsm_ms",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_GSM_MS,
diff --git a/libavcodec/libmp3lame.c b/libavcodec/libmp3lame.c
index 35c8054..db0bc82 100644
--- a/libavcodec/libmp3lame.c
+++ b/libavcodec/libmp3lame.c
@@ -213,7 +213,7 @@ static av_cold int MP3lame_encode_close(AVCodecContext *avctx)
 }
 
 
-AVCodec libmp3lame_encoder = {
+AVCodec ff_libmp3lame_encoder = {
     "libmp3lame",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_MP3,
diff --git a/libavcodec/libopencore-amr.c b/libavcodec/libopencore-amr.c
index ab1f89a..b2e2f16 100644
--- a/libavcodec/libopencore-amr.c
+++ b/libavcodec/libopencore-amr.c
@@ -139,7 +139,7 @@ static int amr_nb_decode_frame(AVCodecContext *avctx, void *data,
     return packet_size;
 }
 
-AVCodec libopencore_amrnb_decoder = {
+AVCodec ff_libopencore_amrnb_decoder = {
     "libopencore_amrnb",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_AMR_NB,
@@ -213,7 +213,7 @@ static int amr_nb_encode_frame(AVCodecContext *avctx,
     return written;
 }
 
-AVCodec libopencore_amrnb_encoder = {
+AVCodec ff_libopencore_amrnb_encoder = {
     "libopencore_amrnb",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_AMR_NB,
@@ -310,7 +310,7 @@ static int amr_wb_decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec libopencore_amrwb_decoder = {
+AVCodec ff_libopencore_amrwb_decoder = {
     "libopencore_amrwb",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_AMR_WB,
diff --git a/libavcodec/libopenjpeg.c b/libavcodec/libopenjpeg.c
index a23b17f..0a9ded8 100644
--- a/libavcodec/libopenjpeg.c
+++ b/libavcodec/libopenjpeg.c
@@ -184,7 +184,7 @@ static av_cold int libopenjpeg_decode_close(AVCodecContext *avctx)
 }
 
 
-AVCodec libopenjpeg_decoder = {
+AVCodec ff_libopenjpeg_decoder = {
     "libopenjpeg",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_JPEG2000,
diff --git a/libavcodec/libschroedingerdec.c b/libavcodec/libschroedingerdec.c
index fc875bb..e733d9e 100644
--- a/libavcodec/libschroedingerdec.c
+++ b/libavcodec/libschroedingerdec.c
@@ -346,7 +346,7 @@ static void libschroedinger_flush(AVCodecContext *avccontext)
     p_schro_params->eos_signalled = 0;
 }
 
-AVCodec libschroedinger_decoder = {
+AVCodec ff_libschroedinger_decoder = {
     "libschroedinger",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DIRAC,
diff --git a/libavcodec/libschroedingerenc.c b/libavcodec/libschroedingerenc.c
index c4a0433..4f42d28 100644
--- a/libavcodec/libschroedingerenc.c
+++ b/libavcodec/libschroedingerenc.c
@@ -422,7 +422,7 @@ static int libschroedinger_encode_close(AVCodecContext *avccontext)
 }
 
 
-AVCodec libschroedinger_encoder = {
+AVCodec ff_libschroedinger_encoder = {
     "libschroedinger",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_DIRAC,
diff --git a/libavcodec/libspeexdec.c b/libavcodec/libspeexdec.c
index 204e52c..1caf738 100644
--- a/libavcodec/libspeexdec.c
+++ b/libavcodec/libspeexdec.c
@@ -138,7 +138,7 @@ static av_cold int libspeex_decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec libspeex_decoder = {
+AVCodec ff_libspeex_decoder = {
     "libspeex",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_SPEEX,
diff --git a/libavcodec/libtheoraenc.c b/libavcodec/libtheoraenc.c
index e4ca721..87793ad 100644
--- a/libavcodec/libtheoraenc.c
+++ b/libavcodec/libtheoraenc.c
@@ -357,7 +357,7 @@ static av_cold int encode_close(AVCodecContext* avc_context)
 }
 
 /** AVCodec struct exposed to libavcodec */
-AVCodec libtheora_encoder = {
+AVCodec ff_libtheora_encoder = {
     .name = "libtheora",
     .type = AVMEDIA_TYPE_VIDEO,
     .id = CODEC_ID_THEORA,
diff --git a/libavcodec/libvorbis.c b/libavcodec/libvorbis.c
index ef56c25..9324b28 100644
--- a/libavcodec/libvorbis.c
+++ b/libavcodec/libvorbis.c
@@ -243,7 +243,7 @@ static av_cold int oggvorbis_encode_close(AVCodecContext *avccontext) {
 }
 
 
-AVCodec libvorbis_encoder = {
+AVCodec ff_libvorbis_encoder = {
     "libvorbis",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_VORBIS,
diff --git a/libavcodec/libvpxdec.c b/libavcodec/libvpxdec.c
index 12efb9f..f912322 100644
--- a/libavcodec/libvpxdec.c
+++ b/libavcodec/libvpxdec.c
@@ -111,7 +111,7 @@ static av_cold int vp8_free(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec libvpx_decoder = {
+AVCodec ff_libvpx_decoder = {
     "libvpx",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VP8,
diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c
index d0838ba..878c979 100644
--- a/libavcodec/libvpxenc.c
+++ b/libavcodec/libvpxenc.c
@@ -494,7 +494,7 @@ static int vp8_encode(AVCodecContext *avctx, uint8_t *buf, int buf_size,
     return coded_size;
 }
 
-AVCodec libvpx_encoder = {
+AVCodec ff_libvpx_encoder = {
     "libvpx",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VP8,
diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index 85ef38c..84ecb2a 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -329,7 +329,7 @@ static av_cold int X264_init(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec libx264_encoder = {
+AVCodec ff_libx264_encoder = {
     .name           = "libx264",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_H264,
diff --git a/libavcodec/libxavs.c b/libavcodec/libxavs.c
index aa5dc23..08b93f5 100644
--- a/libavcodec/libxavs.c
+++ b/libavcodec/libxavs.c
@@ -336,7 +336,7 @@ static av_cold int XAVS_init(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec libxavs_encoder = {
+AVCodec ff_libxavs_encoder = {
     .name           = "libxavs",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_CAVS,
diff --git a/libavcodec/libxvidff.c b/libavcodec/libxvidff.c
index f527354..d95ddee 100644
--- a/libavcodec/libxvidff.c
+++ b/libavcodec/libxvidff.c
@@ -814,7 +814,7 @@ int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2) {
 /**
  * Xvid codec definition for libavcodec.
  */
-AVCodec libxvid_encoder = {
+AVCodec ff_libxvid_encoder = {
     "libxvid",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG4,
diff --git a/libavcodec/ljpegenc.c b/libavcodec/ljpegenc.c
index 2ef07c3..56336cb 100644
--- a/libavcodec/ljpegenc.c
+++ b/libavcodec/ljpegenc.c
@@ -186,7 +186,7 @@ static int encode_picture_lossless(AVCodecContext *avctx, unsigned char *buf, in
 }
 
 
-AVCodec ljpeg_encoder = { //FIXME avoid MPV_* lossless JPEG should not need them
+AVCodec ff_ljpeg_encoder = { //FIXME avoid MPV_* lossless JPEG should not need them
     "ljpeg",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_LJPEG,
diff --git a/libavcodec/loco.c b/libavcodec/loco.c
index d19a80c..48fa829 100644
--- a/libavcodec/loco.c
+++ b/libavcodec/loco.c
@@ -285,7 +285,7 @@ static av_cold int decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec loco_decoder = {
+AVCodec ff_loco_decoder = {
     "loco",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_LOCO,
diff --git a/libavcodec/mace.c b/libavcodec/mace.c
index c4c43f6..1b8c9d0 100644
--- a/libavcodec/mace.c
+++ b/libavcodec/mace.c
@@ -279,7 +279,7 @@ static int mace_decode_frame(AVCodecContext *avctx,
     return buf_size;
 }
 
-AVCodec mace3_decoder = {
+AVCodec ff_mace3_decoder = {
     "mace3",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_MACE3,
@@ -291,7 +291,7 @@ AVCodec mace3_decoder = {
     .long_name = NULL_IF_CONFIG_SMALL("MACE (Macintosh Audio Compression/Expansion) 3:1"),
 };
 
-AVCodec mace6_decoder = {
+AVCodec ff_mace6_decoder = {
     "mace6",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_MACE6,
diff --git a/libavcodec/mdec.c b/libavcodec/mdec.c
index 83e1f7c..12d1751 100644
--- a/libavcodec/mdec.c
+++ b/libavcodec/mdec.c
@@ -250,7 +250,7 @@ static av_cold int decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec mdec_decoder = {
+AVCodec ff_mdec_decoder = {
     "mdec",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MDEC,
diff --git a/libavcodec/mimic.c b/libavcodec/mimic.c
index e5f7123..bcf125a 100644
--- a/libavcodec/mimic.c
+++ b/libavcodec/mimic.c
@@ -378,7 +378,7 @@ static av_cold int mimic_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec mimic_decoder = {
+AVCodec ff_mimic_decoder = {
     "mimic",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MIMIC,
diff --git a/libavcodec/mjpeg2jpeg_bsf.c b/libavcodec/mjpeg2jpeg_bsf.c
index 36bb749..855f24a 100644
--- a/libavcodec/mjpeg2jpeg_bsf.c
+++ b/libavcodec/mjpeg2jpeg_bsf.c
@@ -106,7 +106,7 @@ static int mjpeg2jpeg_filter(AVBitStreamFilterContext *bsfc,
     return 1;
 }
 
-AVBitStreamFilter mjpeg2jpeg_bsf = {
+AVBitStreamFilter ff_mjpeg2jpeg_bsf = {
     .name           = "mjpeg2jpeg",
     .priv_data_size = 0,
     .filter         = mjpeg2jpeg_filter,
diff --git a/libavcodec/mjpeg_parser.c b/libavcodec/mjpeg_parser.c
index b1848fa..0cc355d 100644
--- a/libavcodec/mjpeg_parser.c
+++ b/libavcodec/mjpeg_parser.c
@@ -96,7 +96,7 @@ static int jpeg_parse(AVCodecParserContext *s,
 }
 
 
-AVCodecParser mjpeg_parser = {
+AVCodecParser ff_mjpeg_parser = {
     { CODEC_ID_MJPEG },
     sizeof(ParseContext),
     NULL,
diff --git a/libavcodec/mjpega_dump_header_bsf.c b/libavcodec/mjpega_dump_header_bsf.c
index bb7858e..2e86fd4 100644
--- a/libavcodec/mjpega_dump_header_bsf.c
+++ b/libavcodec/mjpega_dump_header_bsf.c
@@ -87,7 +87,7 @@ static int mjpega_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *av
     return 0;
 }
 
-AVBitStreamFilter mjpega_dump_header_bsf = {
+AVBitStreamFilter ff_mjpega_dump_header_bsf = {
     "mjpegadump",
     0,
     mjpega_dump_header,
diff --git a/libavcodec/mjpegbdec.c b/libavcodec/mjpegbdec.c
index 907fa6f..dc5a838 100644
--- a/libavcodec/mjpegbdec.c
+++ b/libavcodec/mjpegbdec.c
@@ -145,7 +145,7 @@ read_header:
     return buf_ptr - buf;
 }
 
-AVCodec mjpegb_decoder = {
+AVCodec ff_mjpegb_decoder = {
     "mjpegb",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MJPEGB,
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index 3386cc0..6c0dfeb 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -1536,7 +1536,7 @@ av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec mjpeg_decoder = {
+AVCodec ff_mjpeg_decoder = {
     "mjpeg",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MJPEG,
@@ -1551,7 +1551,7 @@ AVCodec mjpeg_decoder = {
     .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
 };
 
-AVCodec thp_decoder = {
+AVCodec ff_thp_decoder = {
     "thp",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_THP,
diff --git a/libavcodec/mjpegenc.c b/libavcodec/mjpegenc.c
index 05f0bed..15b588c 100644
--- a/libavcodec/mjpegenc.c
+++ b/libavcodec/mjpegenc.c
@@ -445,7 +445,7 @@ void ff_mjpeg_encode_mb(MpegEncContext *s, DCTELEM block[6][64])
     s->i_tex_bits += get_bits_diff(s);
 }
 
-AVCodec mjpeg_encoder = {
+AVCodec ff_mjpeg_encoder = {
     "mjpeg",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MJPEG,
diff --git a/libavcodec/mlp_parser.c b/libavcodec/mlp_parser.c
index 36a296f..a6196f9 100644
--- a/libavcodec/mlp_parser.c
+++ b/libavcodec/mlp_parser.c
@@ -288,7 +288,7 @@ lost_sync:
     return 1;
 }
 
-AVCodecParser mlp_parser = {
+AVCodecParser ff_mlp_parser = {
     { CODEC_ID_MLP, CODEC_ID_TRUEHD },
     sizeof(MLPParseContext),
     mlp_init,
diff --git a/libavcodec/mlpdec.c b/libavcodec/mlpdec.c
index 2a04be5..a655b3d 100644
--- a/libavcodec/mlpdec.c
+++ b/libavcodec/mlpdec.c
@@ -1137,7 +1137,7 @@ error:
     return -1;
 }
 
-AVCodec mlp_decoder = {
+AVCodec ff_mlp_decoder = {
     "mlp",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_MLP,
@@ -1150,7 +1150,7 @@ AVCodec mlp_decoder = {
 };
 
 #if CONFIG_TRUEHD_DECODER
-AVCodec truehd_decoder = {
+AVCodec ff_truehd_decoder = {
     "truehd",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_TRUEHD,
diff --git a/libavcodec/mmvideo.c b/libavcodec/mmvideo.c
index 568a010..60e00fb 100644
--- a/libavcodec/mmvideo.c
+++ b/libavcodec/mmvideo.c
@@ -212,7 +212,7 @@ static av_cold int mm_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec mmvideo_decoder = {
+AVCodec ff_mmvideo_decoder = {
     "mmvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MMVIDEO,
diff --git a/libavcodec/motionpixels.c b/libavcodec/motionpixels.c
index 9bc5e20..ed0af4d 100644
--- a/libavcodec/motionpixels.c
+++ b/libavcodec/motionpixels.c
@@ -302,7 +302,7 @@ static av_cold int mp_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec motionpixels_decoder = {
+AVCodec ff_motionpixels_decoder = {
     "motionpixels",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MOTIONPIXELS,
diff --git a/libavcodec/movsub_bsf.c b/libavcodec/movsub_bsf.c
index 2423f2d..088c774 100644
--- a/libavcodec/movsub_bsf.c
+++ b/libavcodec/movsub_bsf.c
@@ -33,7 +33,7 @@ static int text2movsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, co
     return 1;
 }
 
-AVBitStreamFilter text2movsub_bsf={
+AVBitStreamFilter ff_text2movsub_bsf={
     "text2movsub",
     0,
     text2movsub,
@@ -49,7 +49,7 @@ static int mov2textsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, co
     return 1;
 }
 
-AVBitStreamFilter mov2textsub_bsf={
+AVBitStreamFilter ff_mov2textsub_bsf={
     "mov2textsub",
     0,
     mov2textsub,
diff --git a/libavcodec/mp3_header_compress_bsf.c b/libavcodec/mp3_header_compress_bsf.c
index f5c5138..006a367 100644
--- a/libavcodec/mp3_header_compress_bsf.c
+++ b/libavcodec/mp3_header_compress_bsf.c
@@ -79,7 +79,7 @@ output_unchanged:
     return 1;
 }
 
-AVBitStreamFilter mp3_header_compress_bsf={
+AVBitStreamFilter ff_mp3_header_compress_bsf={
     "mp3comp",
     0,
     mp3_header_compress,
diff --git a/libavcodec/mp3_header_decompress_bsf.c b/libavcodec/mp3_header_decompress_bsf.c
index d897ed9..f096d5e 100644
--- a/libavcodec/mp3_header_decompress_bsf.c
+++ b/libavcodec/mp3_header_decompress_bsf.c
@@ -89,7 +89,7 @@ static int mp3_header_decompress(AVBitStreamFilterContext *bsfc, AVCodecContext
     return 1;
 }
 
-AVBitStreamFilter mp3_header_decompress_bsf={
+AVBitStreamFilter ff_mp3_header_decompress_bsf={
     "mp3decomp",
     0,
     mp3_header_decompress,
diff --git a/libavcodec/mpc7.c b/libavcodec/mpc7.c
index 5ac2579..a77648f 100644
--- a/libavcodec/mpc7.c
+++ b/libavcodec/mpc7.c
@@ -288,7 +288,7 @@ static void mpc7_decode_flush(AVCodecContext *avctx)
     c->frames_to_skip = 32;
 }
 
-AVCodec mpc7_decoder = {
+AVCodec ff_mpc7_decoder = {
     "mpc7",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_MUSEPACK7,
diff --git a/libavcodec/mpc8.c b/libavcodec/mpc8.c
index d8d62ed..327a0c0 100644
--- a/libavcodec/mpc8.c
+++ b/libavcodec/mpc8.c
@@ -404,7 +404,7 @@ static int mpc8_decode_frame(AVCodecContext * avctx,
     return c->cur_frame ? c->last_bits_used >> 3 : buf_size;
 }
 
-AVCodec mpc8_decoder = {
+AVCodec ff_mpc8_decoder = {
     "mpc8",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_MUSEPACK8,
diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index 4aaa402..0645cde 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -2471,7 +2471,7 @@ static int mpeg_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec mpeg1video_decoder = {
+AVCodec ff_mpeg1video_decoder = {
     "mpeg1video",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG1VIDEO,
@@ -2486,7 +2486,7 @@ AVCodec mpeg1video_decoder = {
     .long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"),
 };
 
-AVCodec mpeg2video_decoder = {
+AVCodec ff_mpeg2video_decoder = {
     "mpeg2video",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG2VIDEO,
@@ -2502,7 +2502,7 @@ AVCodec mpeg2video_decoder = {
 };
 
 //legacy decoder
-AVCodec mpegvideo_decoder = {
+AVCodec ff_mpegvideo_decoder = {
     "mpegvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG2VIDEO,
@@ -2534,7 +2534,7 @@ static av_cold int mpeg_mc_decode_init(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec mpeg_xvmc_decoder = {
+AVCodec ff_mpeg_xvmc_decoder = {
     "mpegvideo_xvmc",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG2VIDEO_XVMC,
@@ -2551,7 +2551,7 @@ AVCodec mpeg_xvmc_decoder = {
 #endif
 
 #if CONFIG_MPEG_VDPAU_DECODER
-AVCodec mpeg_vdpau_decoder = {
+AVCodec ff_mpeg_vdpau_decoder = {
     "mpegvideo_vdpau",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG2VIDEO,
@@ -2567,7 +2567,7 @@ AVCodec mpeg_vdpau_decoder = {
 #endif
 
 #if CONFIG_MPEG1_VDPAU_DECODER
-AVCodec mpeg1_vdpau_decoder = {
+AVCodec ff_mpeg1_vdpau_decoder = {
     "mpeg1video_vdpau",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG1VIDEO,
diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c
index 6868e2a..877ec04 100644
--- a/libavcodec/mpeg12enc.c
+++ b/libavcodec/mpeg12enc.c
@@ -930,7 +930,7 @@ static void mpeg1_encode_block(MpegEncContext *s,
     put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
 }
 
-AVCodec mpeg1video_encoder = {
+AVCodec ff_mpeg1video_encoder = {
     "mpeg1video",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG1VIDEO,
@@ -944,7 +944,7 @@ AVCodec mpeg1video_encoder = {
     .long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"),
 };
 
-AVCodec mpeg2video_encoder = {
+AVCodec ff_mpeg2video_encoder = {
     "mpeg2video",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG2VIDEO,
diff --git a/libavcodec/mpeg4video_parser.c b/libavcodec/mpeg4video_parser.c
index 5dbda8b..5d0f47e 100644
--- a/libavcodec/mpeg4video_parser.c
+++ b/libavcodec/mpeg4video_parser.c
@@ -129,7 +129,7 @@ static int mpeg4video_parse(AVCodecParserContext *s,
 }
 
 
-AVCodecParser mpeg4video_parser = {
+AVCodecParser ff_mpeg4video_parser = {
     { CODEC_ID_MPEG4 },
     sizeof(ParseContext1),
     mpeg4video_parse_init,
diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c
index d331f0d..5303da3 100644
--- a/libavcodec/mpeg4videodec.c
+++ b/libavcodec/mpeg4videodec.c
@@ -2225,7 +2225,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec mpeg4_decoder = {
+AVCodec ff_mpeg4_decoder = {
     "mpeg4",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG4,
@@ -2243,7 +2243,7 @@ AVCodec mpeg4_decoder = {
 
 
 #if CONFIG_MPEG4_VDPAU_DECODER
-AVCodec mpeg4_vdpau_decoder = {
+AVCodec ff_mpeg4_vdpau_decoder = {
     "mpeg4_vdpau",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG4,
diff --git a/libavcodec/mpeg4videoenc.c b/libavcodec/mpeg4videoenc.c
index 856cfa7..2af898b 100644
--- a/libavcodec/mpeg4videoenc.c
+++ b/libavcodec/mpeg4videoenc.c
@@ -1338,7 +1338,7 @@ void ff_mpeg4_encode_video_packet_header(MpegEncContext *s)
     put_bits(&s->pb, 1, 0); /* no HEC */
 }
 
-AVCodec mpeg4_encoder = {
+AVCodec ff_mpeg4_encoder = {
     "mpeg4",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MPEG4,
diff --git a/libavcodec/mpegaudio_parser.c b/libavcodec/mpegaudio_parser.c
index 6d7ab8a..cfd92d4 100644
--- a/libavcodec/mpegaudio_parser.c
+++ b/libavcodec/mpegaudio_parser.c
@@ -140,7 +140,7 @@ static int mpegaudio_parse(AVCodecParserContext *s1,
 }
 
 
-AVCodecParser mpegaudio_parser = {
+AVCodecParser ff_mpegaudio_parser = {
     { CODEC_ID_MP1, CODEC_ID_MP2, CODEC_ID_MP3 },
     sizeof(MpegAudioParseContext),
     NULL,
diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c
index 769be89..c174c0f 100644
--- a/libavcodec/mpegaudiodec.c
+++ b/libavcodec/mpegaudiodec.c
@@ -2308,7 +2308,7 @@ static int decode_frame_mp3on4(AVCodecContext * avctx,
 
 #if !CONFIG_FLOAT
 #if CONFIG_MP1_DECODER
-AVCodec mp1_decoder =
+AVCodec ff_mp1_decoder =
 {
     "mp1",
     AVMEDIA_TYPE_AUDIO,
@@ -2324,7 +2324,7 @@ AVCodec mp1_decoder =
 };
 #endif
 #if CONFIG_MP2_DECODER
-AVCodec mp2_decoder =
+AVCodec ff_mp2_decoder =
 {
     "mp2",
     AVMEDIA_TYPE_AUDIO,
@@ -2340,7 +2340,7 @@ AVCodec mp2_decoder =
 };
 #endif
 #if CONFIG_MP3_DECODER
-AVCodec mp3_decoder =
+AVCodec ff_mp3_decoder =
 {
     "mp3",
     AVMEDIA_TYPE_AUDIO,
@@ -2356,7 +2356,7 @@ AVCodec mp3_decoder =
 };
 #endif
 #if CONFIG_MP3ADU_DECODER
-AVCodec mp3adu_decoder =
+AVCodec ff_mp3adu_decoder =
 {
     "mp3adu",
     AVMEDIA_TYPE_AUDIO,
@@ -2372,7 +2372,7 @@ AVCodec mp3adu_decoder =
 };
 #endif
 #if CONFIG_MP3ON4_DECODER
-AVCodec mp3on4_decoder =
+AVCodec ff_mp3on4_decoder =
 {
     "mp3on4",
     AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/mpegaudiodec_float.c b/libavcodec/mpegaudiodec_float.c
index 9150b33..758ef83 100644
--- a/libavcodec/mpegaudiodec_float.c
+++ b/libavcodec/mpegaudiodec_float.c
@@ -88,7 +88,7 @@ static av_cold int decode_end(AVCodecContext * avctx)
 }
 
 #if CONFIG_MP1FLOAT_DECODER
-AVCodec mp1float_decoder =
+AVCodec ff_mp1float_decoder =
 {
     "mp1float",
     AVMEDIA_TYPE_AUDIO,
@@ -104,7 +104,7 @@ AVCodec mp1float_decoder =
 };
 #endif
 #if CONFIG_MP2FLOAT_DECODER
-AVCodec mp2float_decoder =
+AVCodec ff_mp2float_decoder =
 {
     "mp2float",
     AVMEDIA_TYPE_AUDIO,
@@ -120,7 +120,7 @@ AVCodec mp2float_decoder =
 };
 #endif
 #if CONFIG_MP3FLOAT_DECODER
-AVCodec mp3float_decoder =
+AVCodec ff_mp3float_decoder =
 {
     "mp3float",
     AVMEDIA_TYPE_AUDIO,
@@ -136,7 +136,7 @@ AVCodec mp3float_decoder =
 };
 #endif
 #if CONFIG_MP3ADUFLOAT_DECODER
-AVCodec mp3adufloat_decoder =
+AVCodec ff_mp3adufloat_decoder =
 {
     "mp3adufloat",
     AVMEDIA_TYPE_AUDIO,
@@ -152,7 +152,7 @@ AVCodec mp3adufloat_decoder =
 };
 #endif
 #if CONFIG_MP3ON4FLOAT_DECODER
-AVCodec mp3on4float_decoder =
+AVCodec ff_mp3on4float_decoder =
 {
     "mp3on4float",
     AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/mpegaudioenc.c b/libavcodec/mpegaudioenc.c
index 736cbe1..9458af5 100644
--- a/libavcodec/mpegaudioenc.c
+++ b/libavcodec/mpegaudioenc.c
@@ -783,7 +783,7 @@ static av_cold int MPA_encode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec mp2_encoder = {
+AVCodec ff_mp2_encoder = {
     "mp2",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_MP2,
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index ef830af..fa285ca 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -3779,7 +3779,7 @@ int dct_quantize_c(MpegEncContext *s,
     return last_non_zero;
 }
 
-AVCodec h263_encoder = {
+AVCodec ff_h263_encoder = {
     "h263",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_H263,
@@ -3791,7 +3791,7 @@ AVCodec h263_encoder = {
     .long_name= NULL_IF_CONFIG_SMALL("H.263 / H.263-1996"),
 };
 
-AVCodec h263p_encoder = {
+AVCodec ff_h263p_encoder = {
     "h263p",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_H263P,
@@ -3803,7 +3803,7 @@ AVCodec h263p_encoder = {
     .long_name= NULL_IF_CONFIG_SMALL("H.263+ / H.263-1998 / H.263 version 2"),
 };
 
-AVCodec msmpeg4v1_encoder = {
+AVCodec ff_msmpeg4v1_encoder = {
     "msmpeg4v1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MSMPEG4V1,
@@ -3815,7 +3815,7 @@ AVCodec msmpeg4v1_encoder = {
     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"),
 };
 
-AVCodec msmpeg4v2_encoder = {
+AVCodec ff_msmpeg4v2_encoder = {
     "msmpeg4v2",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MSMPEG4V2,
@@ -3827,7 +3827,7 @@ AVCodec msmpeg4v2_encoder = {
     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
 };
 
-AVCodec msmpeg4v3_encoder = {
+AVCodec ff_msmpeg4v3_encoder = {
     "msmpeg4",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MSMPEG4V3,
@@ -3839,7 +3839,7 @@ AVCodec msmpeg4v3_encoder = {
     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
 };
 
-AVCodec wmv1_encoder = {
+AVCodec ff_wmv1_encoder = {
     "wmv1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_WMV1,
diff --git a/libavcodec/mpegvideo_parser.c b/libavcodec/mpegvideo_parser.c
index 546c3bd..6369224 100644
--- a/libavcodec/mpegvideo_parser.c
+++ b/libavcodec/mpegvideo_parser.c
@@ -176,7 +176,7 @@ static int mpegvideo_split(AVCodecContext *avctx,
     return 0;
 }
 
-AVCodecParser mpegvideo_parser = {
+AVCodecParser ff_mpegvideo_parser = {
     { CODEC_ID_MPEG1VIDEO, CODEC_ID_MPEG2VIDEO },
     sizeof(ParseContext1),
     NULL,
diff --git a/libavcodec/msmpeg4.c b/libavcodec/msmpeg4.c
index 79a96e4..8b3b6a5 100644
--- a/libavcodec/msmpeg4.c
+++ b/libavcodec/msmpeg4.c
@@ -1908,7 +1908,7 @@ int ff_msmpeg4_decode_motion(MpegEncContext * s,
     return 0;
 }
 
-AVCodec msmpeg4v1_decoder = {
+AVCodec ff_msmpeg4v1_decoder = {
     "msmpeg4v1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MSMPEG4V1,
@@ -1923,7 +1923,7 @@ AVCodec msmpeg4v1_decoder = {
     .pix_fmts= ff_pixfmt_list_420,
 };
 
-AVCodec msmpeg4v2_decoder = {
+AVCodec ff_msmpeg4v2_decoder = {
     "msmpeg4v2",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MSMPEG4V2,
@@ -1938,7 +1938,7 @@ AVCodec msmpeg4v2_decoder = {
     .pix_fmts= ff_pixfmt_list_420,
 };
 
-AVCodec msmpeg4v3_decoder = {
+AVCodec ff_msmpeg4v3_decoder = {
     "msmpeg4",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MSMPEG4V3,
@@ -1953,7 +1953,7 @@ AVCodec msmpeg4v3_decoder = {
     .pix_fmts= ff_pixfmt_list_420,
 };
 
-AVCodec wmv1_decoder = {
+AVCodec ff_wmv1_decoder = {
     "wmv1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_WMV1,
diff --git a/libavcodec/msrle.c b/libavcodec/msrle.c
index 28eb5d3..f1fa8f5 100644
--- a/libavcodec/msrle.c
+++ b/libavcodec/msrle.c
@@ -143,7 +143,7 @@ static av_cold int msrle_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec msrle_decoder = {
+AVCodec ff_msrle_decoder = {
     "msrle",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MSRLE,
diff --git a/libavcodec/msvideo1.c b/libavcodec/msvideo1.c
index 30aca39..d40304d 100644
--- a/libavcodec/msvideo1.c
+++ b/libavcodec/msvideo1.c
@@ -331,7 +331,7 @@ static av_cold int msvideo1_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec msvideo1_decoder = {
+AVCodec ff_msvideo1_decoder = {
     "msvideo1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_MSVIDEO1,
diff --git a/libavcodec/nellymoserdec.c b/libavcodec/nellymoserdec.c
index c2cbe95..89dde91 100644
--- a/libavcodec/nellymoserdec.c
+++ b/libavcodec/nellymoserdec.c
@@ -196,7 +196,7 @@ static av_cold int decode_end(AVCodecContext * avctx) {
     return 0;
 }
 
-AVCodec nellymoser_decoder = {
+AVCodec ff_nellymoser_decoder = {
     "nellymoser",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_NELLYMOSER,
diff --git a/libavcodec/nellymoserenc.c b/libavcodec/nellymoserenc.c
index 03b647e..9b792ff 100644
--- a/libavcodec/nellymoserenc.c
+++ b/libavcodec/nellymoserenc.c
@@ -382,7 +382,7 @@ static int encode_frame(AVCodecContext *avctx, uint8_t *frame, int buf_size, voi
     return 0;
 }
 
-AVCodec nellymoser_encoder = {
+AVCodec ff_nellymoser_encoder = {
     .name = "nellymoser",
     .type = AVMEDIA_TYPE_AUDIO,
     .id = CODEC_ID_NELLYMOSER,
diff --git a/libavcodec/noise_bsf.c b/libavcodec/noise_bsf.c
index c49dd1f..491fbcc 100644
--- a/libavcodec/noise_bsf.c
+++ b/libavcodec/noise_bsf.c
@@ -39,7 +39,7 @@ static int noise(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const ch
     return 1;
 }
 
-AVBitStreamFilter noise_bsf={
+AVBitStreamFilter ff_noise_bsf={
     "noise",
     sizeof(int),
     noise,
diff --git a/libavcodec/nuv.c b/libavcodec/nuv.c
index d65799e..d53d457 100644
--- a/libavcodec/nuv.c
+++ b/libavcodec/nuv.c
@@ -272,7 +272,7 @@ static av_cold int decode_end(AVCodecContext *avctx) {
     return 0;
 }
 
-AVCodec nuv_decoder = {
+AVCodec ff_nuv_decoder = {
     "nuv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_NUV,
diff --git a/libavcodec/pamenc.c b/libavcodec/pamenc.c
index ae0ea3a..9f50d7f 100644
--- a/libavcodec/pamenc.c
+++ b/libavcodec/pamenc.c
@@ -108,7 +108,7 @@ static int pam_encode_frame(AVCodecContext *avctx, unsigned char *outbuf,
 }
 
 
-AVCodec pam_encoder = {
+AVCodec ff_pam_encoder = {
     "pam",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PAM,
diff --git a/libavcodec/pcm-mpeg.c b/libavcodec/pcm-mpeg.c
index cf2792b..65ba490 100644
--- a/libavcodec/pcm-mpeg.c
+++ b/libavcodec/pcm-mpeg.c
@@ -296,7 +296,7 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx,
     return retval;
 }
 
-AVCodec pcm_bluray_decoder = {
+AVCodec ff_pcm_bluray_decoder = {
     "pcm_bluray",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_PCM_BLURAY,
diff --git a/libavcodec/pcm.c b/libavcodec/pcm.c
index 3e985ce..0785a9d 100644
--- a/libavcodec/pcm.c
+++ b/libavcodec/pcm.c
@@ -473,7 +473,7 @@ static int pcm_decode_frame(AVCodecContext *avctx,
 
 #if CONFIG_ENCODERS
 #define PCM_ENCODER(id_,sample_fmt_,name_,long_name_) \
-AVCodec name_ ## _encoder = {                   \
+AVCodec ff_ ## name_ ## _encoder = {            \
     .name        = #name_,                      \
     .type        = AVMEDIA_TYPE_AUDIO,          \
     .id          = id_,                         \
@@ -489,7 +489,7 @@ AVCodec name_ ## _encoder = {                   \
 
 #if CONFIG_DECODERS
 #define PCM_DECODER(id_,sample_fmt_,name_,long_name_)         \
-AVCodec name_ ## _decoder = {                   \
+AVCodec ff_ ## name_ ## _decoder = {            \
     .name           = #name_,                   \
     .type           = AVMEDIA_TYPE_AUDIO,       \
     .id             = id_,                      \
diff --git a/libavcodec/pcx.c b/libavcodec/pcx.c
index c1b67cd..cafade2 100644
--- a/libavcodec/pcx.c
+++ b/libavcodec/pcx.c
@@ -247,7 +247,7 @@ static av_cold int pcx_end(AVCodecContext *avctx) {
     return 0;
 }
 
-AVCodec pcx_decoder = {
+AVCodec ff_pcx_decoder = {
     "pcx",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PCX,
diff --git a/libavcodec/pcxenc.c b/libavcodec/pcxenc.c
index e01727f..124516b 100644
--- a/libavcodec/pcxenc.c
+++ b/libavcodec/pcxenc.c
@@ -189,7 +189,7 @@ static int pcx_encode_frame(AVCodecContext *avctx,
     return buf - buf_start;
 }
 
-AVCodec pcx_encoder = {
+AVCodec ff_pcx_encoder = {
     "pcx",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PCX,
diff --git a/libavcodec/pgssubdec.c b/libavcodec/pgssubdec.c
index 9ee1ded..4e02dea 100644
--- a/libavcodec/pgssubdec.c
+++ b/libavcodec/pgssubdec.c
@@ -473,7 +473,7 @@ static int decode(AVCodecContext *avctx, void *data, int *data_size,
     return buf_size;
 }
 
-AVCodec pgssub_decoder = {
+AVCodec ff_pgssub_decoder = {
     "pgssub",
     AVMEDIA_TYPE_SUBTITLE,
     CODEC_ID_HDMV_PGS_SUBTITLE,
diff --git a/libavcodec/pictordec.c b/libavcodec/pictordec.c
index 04667f6..59885ae 100644
--- a/libavcodec/pictordec.c
+++ b/libavcodec/pictordec.c
@@ -237,7 +237,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec pictor_decoder = {
+AVCodec ff_pictor_decoder = {
     "pictor",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PICTOR,
diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index eb8989f..03cd784 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -657,7 +657,7 @@ static av_cold int png_dec_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec png_decoder = {
+AVCodec ff_png_decoder = {
     "png",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PNG,
diff --git a/libavcodec/pngenc.c b/libavcodec/pngenc.c
index d199b95..4cb5633 100644
--- a/libavcodec/pngenc.c
+++ b/libavcodec/pngenc.c
@@ -436,7 +436,7 @@ static av_cold int png_enc_init(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec png_encoder = {
+AVCodec ff_png_encoder = {
     "png",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PNG,
diff --git a/libavcodec/pnm_parser.c b/libavcodec/pnm_parser.c
index b8ba1a8..17e8082 100644
--- a/libavcodec/pnm_parser.c
+++ b/libavcodec/pnm_parser.c
@@ -83,7 +83,7 @@ retry:
     return next;
 }
 
-AVCodecParser pnm_parser = {
+AVCodecParser ff_pnm_parser = {
     { CODEC_ID_PGM, CODEC_ID_PGMYUV, CODEC_ID_PPM, CODEC_ID_PBM, CODEC_ID_PAM},
     sizeof(ParseContext),
     NULL,
diff --git a/libavcodec/pnmdec.c b/libavcodec/pnmdec.c
index 6bea93d..39faab7 100644
--- a/libavcodec/pnmdec.c
+++ b/libavcodec/pnmdec.c
@@ -188,7 +188,7 @@ static int pnm_decode_frame(AVCodecContext *avctx, void *data,
 
 
 #if CONFIG_PGM_DECODER
-AVCodec pgm_decoder = {
+AVCodec ff_pgm_decoder = {
     "pgm",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PGM,
@@ -205,7 +205,7 @@ AVCodec pgm_decoder = {
 #endif
 
 #if CONFIG_PGMYUV_DECODER
-AVCodec pgmyuv_decoder = {
+AVCodec ff_pgmyuv_decoder = {
     "pgmyuv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PGMYUV,
@@ -222,7 +222,7 @@ AVCodec pgmyuv_decoder = {
 #endif
 
 #if CONFIG_PPM_DECODER
-AVCodec ppm_decoder = {
+AVCodec ff_ppm_decoder = {
     "ppm",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PPM,
@@ -239,7 +239,7 @@ AVCodec ppm_decoder = {
 #endif
 
 #if CONFIG_PBM_DECODER
-AVCodec pbm_decoder = {
+AVCodec ff_pbm_decoder = {
     "pbm",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PBM,
@@ -256,7 +256,7 @@ AVCodec pbm_decoder = {
 #endif
 
 #if CONFIG_PAM_DECODER
-AVCodec pam_decoder = {
+AVCodec ff_pam_decoder = {
     "pam",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PAM,
diff --git a/libavcodec/pnmenc.c b/libavcodec/pnmenc.c
index 1fbf665..4dbd587 100644
--- a/libavcodec/pnmenc.c
+++ b/libavcodec/pnmenc.c
@@ -113,7 +113,7 @@ static int pnm_encode_frame(AVCodecContext *avctx, unsigned char *outbuf,
 
 
 #if CONFIG_PGM_ENCODER
-AVCodec pgm_encoder = {
+AVCodec ff_pgm_encoder = {
     "pgm",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PGM,
@@ -126,7 +126,7 @@ AVCodec pgm_encoder = {
 #endif
 
 #if CONFIG_PGMYUV_ENCODER
-AVCodec pgmyuv_encoder = {
+AVCodec ff_pgmyuv_encoder = {
     "pgmyuv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PGMYUV,
@@ -139,7 +139,7 @@ AVCodec pgmyuv_encoder = {
 #endif
 
 #if CONFIG_PPM_ENCODER
-AVCodec ppm_encoder = {
+AVCodec ff_ppm_encoder = {
     "ppm",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PPM,
@@ -152,7 +152,7 @@ AVCodec ppm_encoder = {
 #endif
 
 #if CONFIG_PBM_ENCODER
-AVCodec pbm_encoder = {
+AVCodec ff_pbm_encoder = {
     "pbm",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PBM,
diff --git a/libavcodec/ptx.c b/libavcodec/ptx.c
index a064425..86b06b4 100644
--- a/libavcodec/ptx.c
+++ b/libavcodec/ptx.c
@@ -106,7 +106,7 @@ static av_cold int ptx_end(AVCodecContext *avctx) {
     return 0;
 }
 
-AVCodec ptx_decoder = {
+AVCodec ff_ptx_decoder = {
     "ptx",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_PTX,
diff --git a/libavcodec/qcelpdec.c b/libavcodec/qcelpdec.c
index 22b90ce..3ed821c 100644
--- a/libavcodec/qcelpdec.c
+++ b/libavcodec/qcelpdec.c
@@ -842,7 +842,7 @@ erasure:
     return *data_size;
 }
 
-AVCodec qcelp_decoder =
+AVCodec ff_qcelp_decoder =
 {
     .name   = "qcelp",
     .type   = AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/qdm2.c b/libavcodec/qdm2.c
index a5fa28d..3779b8e 100644
--- a/libavcodec/qdm2.c
+++ b/libavcodec/qdm2.c
@@ -1974,7 +1974,7 @@ static int qdm2_decode_frame(AVCodecContext *avctx,
     return s->checksum_size;
 }
 
-AVCodec qdm2_decoder =
+AVCodec ff_qdm2_decoder =
 {
     .name = "qdm2",
     .type = AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/qdrw.c b/libavcodec/qdrw.c
index 5750058..be47b42 100644
--- a/libavcodec/qdrw.c
+++ b/libavcodec/qdrw.c
@@ -150,7 +150,7 @@ static av_cold int decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec qdraw_decoder = {
+AVCodec ff_qdraw_decoder = {
     "qdraw",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_QDRAW,
diff --git a/libavcodec/qpeg.c b/libavcodec/qpeg.c
index e6a0b30..e4c2291 100644
--- a/libavcodec/qpeg.c
+++ b/libavcodec/qpeg.c
@@ -311,7 +311,7 @@ static av_cold int decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec qpeg_decoder = {
+AVCodec ff_qpeg_decoder = {
     "qpeg",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_QPEG,
diff --git a/libavcodec/qtrle.c b/libavcodec/qtrle.c
index 1fd9a80..8ad6778 100644
--- a/libavcodec/qtrle.c
+++ b/libavcodec/qtrle.c
@@ -537,7 +537,7 @@ static av_cold int qtrle_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec qtrle_decoder = {
+AVCodec ff_qtrle_decoder = {
     "qtrle",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_QTRLE,
diff --git a/libavcodec/qtrleenc.c b/libavcodec/qtrleenc.c
index aea0f68..78149e5 100644
--- a/libavcodec/qtrleenc.c
+++ b/libavcodec/qtrleenc.c
@@ -321,7 +321,7 @@ static av_cold int qtrle_encode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec qtrle_encoder = {
+AVCodec ff_qtrle_encoder = {
     "qtrle",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_QTRLE,
diff --git a/libavcodec/r210dec.c b/libavcodec/r210dec.c
index b1fe62d..a5222b1 100644
--- a/libavcodec/r210dec.c
+++ b/libavcodec/r210dec.c
@@ -97,7 +97,7 @@ static av_cold int decode_close(AVCodecContext *avctx)
 }
 
 #if CONFIG_R210_DECODER
-AVCodec r210_decoder = {
+AVCodec ff_r210_decoder = {
     "r210",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_R210,
@@ -111,7 +111,7 @@ AVCodec r210_decoder = {
 };
 #endif
 #if CONFIG_R10K_DECODER
-AVCodec r10k_decoder = {
+AVCodec ff_r10k_decoder = {
     "r10k",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_R10K,
diff --git a/libavcodec/ra144dec.c b/libavcodec/ra144dec.c
index 2c022b1..53f529d 100644
--- a/libavcodec/ra144dec.c
+++ b/libavcodec/ra144dec.c
@@ -114,7 +114,7 @@ static int ra144_decode_frame(AVCodecContext * avctx, void *vdata,
     return 20;
 }
 
-AVCodec ra_144_decoder =
+AVCodec ff_ra_144_decoder =
 {
     "real_144",
     AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/ra144enc.c b/libavcodec/ra144enc.c
index 2c0a6b1..a091205 100644
--- a/libavcodec/ra144enc.c
+++ b/libavcodec/ra144enc.c
@@ -508,7 +508,7 @@ static int ra144_encode_frame(AVCodecContext *avctx, uint8_t *frame,
 }
 
 
-AVCodec ra_144_encoder =
+AVCodec ff_ra_144_encoder =
 {
     "real_144",
     AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/ra288.c b/libavcodec/ra288.c
index 03cf18f..9445e70 100644
--- a/libavcodec/ra288.c
+++ b/libavcodec/ra288.c
@@ -203,7 +203,7 @@ static int ra288_decode_frame(AVCodecContext * avctx, void *data,
     return avctx->block_align;
 }
 
-AVCodec ra_288_decoder =
+AVCodec ff_ra_288_decoder =
 {
     "real_288",
     AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/rawdec.c b/libavcodec/rawdec.c
index c664207..c2ca91d 100644
--- a/libavcodec/rawdec.c
+++ b/libavcodec/rawdec.c
@@ -195,7 +195,7 @@ static av_cold int raw_close_decoder(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec rawvideo_decoder = {
+AVCodec ff_rawvideo_decoder = {
     "rawvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_RAWVIDEO,
diff --git a/libavcodec/rawenc.c b/libavcodec/rawenc.c
index 4199704..630df0f 100644
--- a/libavcodec/rawenc.c
+++ b/libavcodec/rawenc.c
@@ -55,7 +55,7 @@ static int raw_encode(AVCodecContext *avctx,
     return ret;
 }
 
-AVCodec rawvideo_encoder = {
+AVCodec ff_rawvideo_encoder = {
     "rawvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_RAWVIDEO,
diff --git a/libavcodec/remove_extradata_bsf.c b/libavcodec/remove_extradata_bsf.c
index 95bd98b..f0d9b45 100644
--- a/libavcodec/remove_extradata_bsf.c
+++ b/libavcodec/remove_extradata_bsf.c
@@ -48,7 +48,7 @@ static int remove_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avct
     return 0;
 }
 
-AVBitStreamFilter remove_extradata_bsf={
+AVBitStreamFilter ff_remove_extradata_bsf={
     "remove_extra",
     0,
     remove_extradata,
diff --git a/libavcodec/rl2.c b/libavcodec/rl2.c
index ba99fb9..1910414 100644
--- a/libavcodec/rl2.c
+++ b/libavcodec/rl2.c
@@ -219,7 +219,7 @@ static av_cold int rl2_decode_end(AVCodecContext *avctx)
 }
 
 
-AVCodec rl2_decoder = {
+AVCodec ff_rl2_decoder = {
     "rl2",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_RL2,
diff --git a/libavcodec/roqaudioenc.c b/libavcodec/roqaudioenc.c
index 229b546..f6bd726 100644
--- a/libavcodec/roqaudioenc.c
+++ b/libavcodec/roqaudioenc.c
@@ -153,7 +153,7 @@ static av_cold int roq_dpcm_encode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec roq_dpcm_encoder = {
+AVCodec ff_roq_dpcm_encoder = {
     "roq_dpcm",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_ROQ_DPCM,
diff --git a/libavcodec/roqvideodec.c b/libavcodec/roqvideodec.c
index 7c6f5ff..4959239 100644
--- a/libavcodec/roqvideodec.c
+++ b/libavcodec/roqvideodec.c
@@ -210,7 +210,7 @@ static av_cold int roq_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec roq_decoder = {
+AVCodec ff_roq_decoder = {
     "roqvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ROQ,
diff --git a/libavcodec/roqvideoenc.c b/libavcodec/roqvideoenc.c
index 28fd9d8..0efbca8 100644
--- a/libavcodec/roqvideoenc.c
+++ b/libavcodec/roqvideoenc.c
@@ -1054,7 +1054,7 @@ static int roq_encode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec roq_encoder =
+AVCodec ff_roq_encoder =
 {
     "roqvideo",
     AVMEDIA_TYPE_VIDEO,
diff --git a/libavcodec/rpza.c b/libavcodec/rpza.c
index e103f52..6a79d97 100644
--- a/libavcodec/rpza.c
+++ b/libavcodec/rpza.c
@@ -275,7 +275,7 @@ static av_cold int rpza_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec rpza_decoder = {
+AVCodec ff_rpza_decoder = {
     "rpza",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_RPZA,
diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c
index b6d87f4..cb304fb 100644
--- a/libavcodec/rv10.c
+++ b/libavcodec/rv10.c
@@ -707,7 +707,7 @@ static int rv10_decode_frame(AVCodecContext *avctx,
     return buf_size;
 }
 
-AVCodec rv10_decoder = {
+AVCodec ff_rv10_decoder = {
     "rv10",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_RV10,
@@ -722,7 +722,7 @@ AVCodec rv10_decoder = {
     .pix_fmts= ff_pixfmt_list_420,
 };
 
-AVCodec rv20_decoder = {
+AVCodec ff_rv20_decoder = {
     "rv20",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_RV20,
diff --git a/libavcodec/rv10enc.c b/libavcodec/rv10enc.c
index 51ca691..206fe13 100644
--- a/libavcodec/rv10enc.c
+++ b/libavcodec/rv10enc.c
@@ -56,7 +56,7 @@ void rv10_encode_picture_header(MpegEncContext *s, int picture_number)
     put_bits(&s->pb, 3, 0);     /* ignored */
 }
 
-AVCodec rv10_encoder = {
+AVCodec ff_rv10_encoder = {
     "rv10",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_RV10,
diff --git a/libavcodec/rv20enc.c b/libavcodec/rv20enc.c
index a31a351..fe26dd4 100644
--- a/libavcodec/rv20enc.c
+++ b/libavcodec/rv20enc.c
@@ -57,7 +57,7 @@ void rv20_encode_picture_header(MpegEncContext *s, int picture_number){
     }
 }
 
-AVCodec rv20_encoder = {
+AVCodec ff_rv20_encoder = {
     "rv20",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_RV20,
diff --git a/libavcodec/rv30.c b/libavcodec/rv30.c
index 22a5dd5..38b600a 100644
--- a/libavcodec/rv30.c
+++ b/libavcodec/rv30.c
@@ -266,7 +266,7 @@ static av_cold int rv30_decode_init(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec rv30_decoder = {
+AVCodec ff_rv30_decoder = {
     "rv30",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_RV30,
diff --git a/libavcodec/rv40.c b/libavcodec/rv40.c
index e236c8f..acebeb7 100644
--- a/libavcodec/rv40.c
+++ b/libavcodec/rv40.c
@@ -668,7 +668,7 @@ static av_cold int rv40_decode_init(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec rv40_decoder = {
+AVCodec ff_rv40_decoder = {
     "rv40",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_RV40,
diff --git a/libavcodec/sgidec.c b/libavcodec/sgidec.c
index 3c199e2..ac2adfe 100644
--- a/libavcodec/sgidec.c
+++ b/libavcodec/sgidec.c
@@ -259,7 +259,7 @@ static av_cold int sgi_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec sgi_decoder = {
+AVCodec ff_sgi_decoder = {
     "sgi",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SGI,
diff --git a/libavcodec/sgienc.c b/libavcodec/sgienc.c
index f9f3709..eafb655 100644
--- a/libavcodec/sgienc.c
+++ b/libavcodec/sgienc.c
@@ -159,7 +159,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf,
     return buf - orig_buf;
 }
 
-AVCodec sgi_encoder = {
+AVCodec ff_sgi_encoder = {
     "sgi",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SGI,
diff --git a/libavcodec/shorten.c b/libavcodec/shorten.c
index f61c263..cff4cc8 100644
--- a/libavcodec/shorten.c
+++ b/libavcodec/shorten.c
@@ -541,7 +541,7 @@ static void shorten_flush(AVCodecContext *avctx){
         s->bitstream_index= 0;
 }
 
-AVCodec shorten_decoder = {
+AVCodec ff_shorten_decoder = {
     "shorten",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_SHORTEN,
diff --git a/libavcodec/sipr.c b/libavcodec/sipr.c
index 0822456..b96e3b9 100644
--- a/libavcodec/sipr.c
+++ b/libavcodec/sipr.c
@@ -549,7 +549,7 @@ static int sipr_decode_frame(AVCodecContext *avctx, void *datap,
     return mode_par->bits_per_frame >> 3;
 }
 
-AVCodec sipr_decoder = {
+AVCodec ff_sipr_decoder = {
     "sipr",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_SIPR,
diff --git a/libavcodec/smacker.c b/libavcodec/smacker.c
index 38ca61c..2fcc335 100644
--- a/libavcodec/smacker.c
+++ b/libavcodec/smacker.c
@@ -689,7 +689,7 @@ static int smka_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     return buf_size;
 }
 
-AVCodec smacker_decoder = {
+AVCodec ff_smacker_decoder = {
     "smackvid",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SMACKVIDEO,
@@ -702,7 +702,7 @@ AVCodec smacker_decoder = {
     .long_name = NULL_IF_CONFIG_SMALL("Smacker video"),
 };
 
-AVCodec smackaud_decoder = {
+AVCodec ff_smackaud_decoder = {
     "smackaud",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_SMACKAUDIO,
diff --git a/libavcodec/smc.c b/libavcodec/smc.c
index 2e2dffd..f8b994c 100644
--- a/libavcodec/smc.c
+++ b/libavcodec/smc.c
@@ -471,7 +471,7 @@ static av_cold int smc_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec smc_decoder = {
+AVCodec ff_smc_decoder = {
     "smc",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SMC,
diff --git a/libavcodec/snow.c b/libavcodec/snow.c
index 18039d2..8a259af 100644
--- a/libavcodec/snow.c
+++ b/libavcodec/snow.c
@@ -2234,7 +2234,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec snow_decoder = {
+AVCodec ff_snow_decoder = {
     "snow",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SNOW,
@@ -3985,7 +3985,7 @@ static av_cold int encode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec snow_encoder = {
+AVCodec ff_snow_encoder = {
     "snow",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SNOW,
diff --git a/libavcodec/sonic.c b/libavcodec/sonic.c
index aff155d..8dfac1a 100644
--- a/libavcodec/sonic.c
+++ b/libavcodec/sonic.c
@@ -935,7 +935,7 @@ static int sonic_decode_frame(AVCodecContext *avctx,
     return (get_bits_count(&gb)+7)/8;
 }
 
-AVCodec sonic_decoder = {
+AVCodec ff_sonic_decoder = {
     "sonic",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_SONIC,
@@ -949,7 +949,7 @@ AVCodec sonic_decoder = {
 #endif /* CONFIG_SONIC_DECODER */
 
 #if CONFIG_SONIC_ENCODER
-AVCodec sonic_encoder = {
+AVCodec ff_sonic_encoder = {
     "sonic",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_SONIC,
@@ -963,7 +963,7 @@ AVCodec sonic_encoder = {
 #endif
 
 #if CONFIG_SONIC_LS_ENCODER
-AVCodec sonic_ls_encoder = {
+AVCodec ff_sonic_ls_encoder = {
     "sonicls",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_SONIC_LS,
diff --git a/libavcodec/sp5xdec.c b/libavcodec/sp5xdec.c
index 67fbaf4..8bcdbe4 100644
--- a/libavcodec/sp5xdec.c
+++ b/libavcodec/sp5xdec.c
@@ -97,7 +97,7 @@ static int sp5x_decode_frame(AVCodecContext *avctx,
     return i;
 }
 
-AVCodec sp5x_decoder = {
+AVCodec ff_sp5x_decoder = {
     "sp5x",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SP5X,
@@ -112,7 +112,7 @@ AVCodec sp5x_decoder = {
     .long_name = NULL_IF_CONFIG_SMALL("Sunplus JPEG (SP5X)"),
 };
 
-AVCodec amv_decoder = {
+AVCodec ff_amv_decoder = {
     "amv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_AMV,
diff --git a/libavcodec/srtdec.c b/libavcodec/srtdec.c
index adbae51..30fdc12 100644
--- a/libavcodec/srtdec.c
+++ b/libavcodec/srtdec.c
@@ -231,7 +231,7 @@ static int srt_decode_frame(AVCodecContext *avctx,
     return avpkt->size;
 }
 
-AVCodec srt_decoder = {
+AVCodec ff_srt_decoder = {
     .name         = "srt",
     .long_name    = NULL_IF_CONFIG_SMALL("SubRip subtitle"),
     .type         = AVMEDIA_TYPE_SUBTITLE,
diff --git a/libavcodec/sunrast.c b/libavcodec/sunrast.c
index 0696a53..76b65b3 100644
--- a/libavcodec/sunrast.c
+++ b/libavcodec/sunrast.c
@@ -184,7 +184,7 @@ static av_cold int sunrast_end(AVCodecContext *avctx) {
     return 0;
 }
 
-AVCodec sunrast_decoder = {
+AVCodec ff_sunrast_decoder = {
     "sunrast",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SUNRAST,
diff --git a/libavcodec/svq1dec.c b/libavcodec/svq1dec.c
index 1d40f59..eb71007 100644
--- a/libavcodec/svq1dec.c
+++ b/libavcodec/svq1dec.c
@@ -833,7 +833,7 @@ static av_cold int svq1_decode_end(AVCodecContext *avctx)
 }
 
 
-AVCodec svq1_decoder = {
+AVCodec ff_svq1_decoder = {
     "svq1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SVQ1,
diff --git a/libavcodec/svq1enc.c b/libavcodec/svq1enc.c
index c89be25..a415d84 100644
--- a/libavcodec/svq1enc.c
+++ b/libavcodec/svq1enc.c
@@ -572,7 +572,7 @@ static av_cold int svq1_encode_end(AVCodecContext *avctx)
 }
 
 
-AVCodec svq1_encoder = {
+AVCodec ff_svq1_encoder = {
     "svq1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SVQ1,
diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index a527442..9d87710 100644
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -1062,7 +1062,7 @@ static int svq3_decode_frame(AVCodecContext *avctx,
 }
 
 
-AVCodec svq3_decoder = {
+AVCodec ff_svq3_decoder = {
     "svq3",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SVQ3,
diff --git a/libavcodec/targa.c b/libavcodec/targa.c
index 7f8774e..e6e1ca6 100644
--- a/libavcodec/targa.c
+++ b/libavcodec/targa.c
@@ -235,7 +235,7 @@ static av_cold int targa_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec targa_decoder = {
+AVCodec ff_targa_decoder = {
     "targa",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_TARGA,
diff --git a/libavcodec/targaenc.c b/libavcodec/targaenc.c
index 09da727..5c5fd00 100644
--- a/libavcodec/targaenc.c
+++ b/libavcodec/targaenc.c
@@ -158,7 +158,7 @@ static av_cold int targa_encode_init(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec targa_encoder = {
+AVCodec ff_targa_encoder = {
     .name = "targa",
     .type = AVMEDIA_TYPE_VIDEO,
     .id = CODEC_ID_TARGA,
diff --git a/libavcodec/tiertexseqv.c b/libavcodec/tiertexseqv.c
index c5f632e..c8aa38c 100644
--- a/libavcodec/tiertexseqv.c
+++ b/libavcodec/tiertexseqv.c
@@ -219,7 +219,7 @@ static av_cold int seqvideo_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec tiertexseqvideo_decoder = {
+AVCodec ff_tiertexseqvideo_decoder = {
     "tiertexseqvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_TIERTEXSEQVIDEO,
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index f5d922a..b012baa 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -600,7 +600,7 @@ static av_cold int tiff_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec tiff_decoder = {
+AVCodec ff_tiff_decoder = {
     "tiff",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_TIFF,
diff --git a/libavcodec/tiffenc.c b/libavcodec/tiffenc.c
index 0905cea..293ec0a 100644
--- a/libavcodec/tiffenc.c
+++ b/libavcodec/tiffenc.c
@@ -442,7 +442,7 @@ fail:
     return ret;
 }
 
-AVCodec tiff_encoder = {
+AVCodec ff_tiff_encoder = {
     "tiff",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_TIFF,
diff --git a/libavcodec/tmv.c b/libavcodec/tmv.c
index 7e0f9a1..62b6e19 100644
--- a/libavcodec/tmv.c
+++ b/libavcodec/tmv.c
@@ -92,7 +92,7 @@ static av_cold int tmv_decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec tmv_decoder = {
+AVCodec ff_tmv_decoder = {
     .name           = "tmv",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_TMV,
diff --git a/libavcodec/truemotion1.c b/libavcodec/truemotion1.c
index 338b4dc..448da84 100644
--- a/libavcodec/truemotion1.c
+++ b/libavcodec/truemotion1.c
@@ -891,7 +891,7 @@ static av_cold int truemotion1_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec truemotion1_decoder = {
+AVCodec ff_truemotion1_decoder = {
     "truemotion1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_TRUEMOTION1,
diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c
index f4e3074..d20ee94 100644
--- a/libavcodec/truemotion2.c
+++ b/libavcodec/truemotion2.c
@@ -881,7 +881,7 @@ static av_cold int decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec truemotion2_decoder = {
+AVCodec ff_truemotion2_decoder = {
     "truemotion2",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_TRUEMOTION2,
diff --git a/libavcodec/truespeech.c b/libavcodec/truespeech.c
index 6bc1e7b..d903a01 100644
--- a/libavcodec/truespeech.c
+++ b/libavcodec/truespeech.c
@@ -381,7 +381,7 @@ static int truespeech_decode_frame(AVCodecContext *avctx,
     return consumed;
 }
 
-AVCodec truespeech_decoder = {
+AVCodec ff_truespeech_decoder = {
     "truespeech",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_TRUESPEECH,
diff --git a/libavcodec/tscc.c b/libavcodec/tscc.c
index 2b717c1..9de53a7 100644
--- a/libavcodec/tscc.c
+++ b/libavcodec/tscc.c
@@ -197,7 +197,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec tscc_decoder = {
+AVCodec ff_tscc_decoder = {
         "camtasia",
         AVMEDIA_TYPE_VIDEO,
         CODEC_ID_TSCC,
diff --git a/libavcodec/tta.c b/libavcodec/tta.c
index dad9933..936dff2 100644
--- a/libavcodec/tta.c
+++ b/libavcodec/tta.c
@@ -456,7 +456,7 @@ static av_cold int tta_decode_close(AVCodecContext *avctx) {
     return 0;
 }
 
-AVCodec tta_decoder = {
+AVCodec ff_tta_decoder = {
     "tta",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_TTA,
diff --git a/libavcodec/twinvq.c b/libavcodec/twinvq.c
index 15907ae..8334e83 100644
--- a/libavcodec/twinvq.c
+++ b/libavcodec/twinvq.c
@@ -1119,7 +1119,7 @@ static av_cold int twin_decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec twinvq_decoder =
+AVCodec ff_twinvq_decoder =
 {
     "twinvq",
     AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/txd.c b/libavcodec/txd.c
index e7d3379..b394e1f 100644
--- a/libavcodec/txd.c
+++ b/libavcodec/txd.c
@@ -155,7 +155,7 @@ static av_cold int txd_end(AVCodecContext *avctx) {
     return 0;
 }
 
-AVCodec txd_decoder = {
+AVCodec ff_txd_decoder = {
     "txd",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_TXD,
diff --git a/libavcodec/ulti.c b/libavcodec/ulti.c
index 1d04c80..bb1270f 100644
--- a/libavcodec/ulti.c
+++ b/libavcodec/ulti.c
@@ -404,7 +404,7 @@ static int ulti_decode_frame(AVCodecContext *avctx,
     return buf_size;
 }
 
-AVCodec ulti_decoder = {
+AVCodec ff_ulti_decoder = {
     "ultimotion",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ULTI,
diff --git a/libavcodec/v210dec.c b/libavcodec/v210dec.c
index 61e9566..97ef594 100644
--- a/libavcodec/v210dec.c
+++ b/libavcodec/v210dec.c
@@ -120,7 +120,7 @@ static av_cold int decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec v210_decoder = {
+AVCodec ff_v210_decoder = {
     "v210",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_V210,
diff --git a/libavcodec/v210enc.c b/libavcodec/v210enc.c
index 11e0e0e..39f672d 100644
--- a/libavcodec/v210enc.c
+++ b/libavcodec/v210enc.c
@@ -117,7 +117,7 @@ static av_cold int encode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec v210_encoder = {
+AVCodec ff_v210_encoder = {
     "v210",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_V210,
diff --git a/libavcodec/v210x.c b/libavcodec/v210x.c
index 6b93a05..0d6a681 100644
--- a/libavcodec/v210x.c
+++ b/libavcodec/v210x.c
@@ -132,7 +132,7 @@ static av_cold int decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec v210x_decoder = {
+AVCodec ff_v210x_decoder = {
     "v210x",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_V210X,
diff --git a/libavcodec/vb.c b/libavcodec/vb.c
index 13c4b0a..fc79f5d 100644
--- a/libavcodec/vb.c
+++ b/libavcodec/vb.c
@@ -287,7 +287,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec vb_decoder = {
+AVCodec ff_vb_decoder = {
     "vb",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VB,
diff --git a/libavcodec/vc1_parser.c b/libavcodec/vc1_parser.c
index 6e559de..98caa20 100644
--- a/libavcodec/vc1_parser.c
+++ b/libavcodec/vc1_parser.c
@@ -169,7 +169,7 @@ static int vc1_split(AVCodecContext *avctx,
     return 0;
 }
 
-AVCodecParser vc1_parser = {
+AVCodecParser ff_vc1_parser = {
     { CODEC_ID_VC1 },
     sizeof(VC1ParseContext),
     NULL,
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index c9a547b..056b435 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -3345,7 +3345,7 @@ static av_cold int vc1_decode_end(AVCodecContext *avctx)
 }
 
 
-AVCodec vc1_decoder = {
+AVCodec ff_vc1_decoder = {
     "vc1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VC1,
@@ -3361,7 +3361,7 @@ AVCodec vc1_decoder = {
 };
 
 #if CONFIG_WMV3_DECODER
-AVCodec wmv3_decoder = {
+AVCodec ff_wmv3_decoder = {
     "wmv3",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_WMV3,
@@ -3378,7 +3378,7 @@ AVCodec wmv3_decoder = {
 #endif
 
 #if CONFIG_WMV3_VDPAU_DECODER
-AVCodec wmv3_vdpau_decoder = {
+AVCodec ff_wmv3_vdpau_decoder = {
     "wmv3_vdpau",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_WMV3,
@@ -3395,7 +3395,7 @@ AVCodec wmv3_vdpau_decoder = {
 #endif
 
 #if CONFIG_VC1_VDPAU_DECODER
-AVCodec vc1_vdpau_decoder = {
+AVCodec ff_vc1_vdpau_decoder = {
     "vc1_vdpau",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VC1,
diff --git a/libavcodec/vcr1.c b/libavcodec/vcr1.c
index 31da94f..9a9c439 100644
--- a/libavcodec/vcr1.c
+++ b/libavcodec/vcr1.c
@@ -176,7 +176,7 @@ static av_cold int encode_init(AVCodecContext *avctx){
 }
 #endif
 
-AVCodec vcr1_decoder = {
+AVCodec ff_vcr1_decoder = {
     "vcr1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VCR1,
@@ -190,7 +190,7 @@ AVCodec vcr1_decoder = {
 };
 
 #if CONFIG_VCR1_ENCODER
-AVCodec vcr1_encoder = {
+AVCodec ff_vcr1_encoder = {
     "vcr1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VCR1,
diff --git a/libavcodec/vmdav.c b/libavcodec/vmdav.c
index 9f44e31..e396c0b 100644
--- a/libavcodec/vmdav.c
+++ b/libavcodec/vmdav.c
@@ -565,7 +565,7 @@ static int vmdaudio_decode_frame(AVCodecContext *avctx,
  * Public Data Structures
  */
 
-AVCodec vmdvideo_decoder = {
+AVCodec ff_vmdvideo_decoder = {
     "vmdvideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VMDVIDEO,
@@ -578,7 +578,7 @@ AVCodec vmdvideo_decoder = {
     .long_name = NULL_IF_CONFIG_SMALL("Sierra VMD video"),
 };
 
-AVCodec vmdaudio_decoder = {
+AVCodec ff_vmdaudio_decoder = {
     "vmdaudio",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_VMDAUDIO,
diff --git a/libavcodec/vmnc.c b/libavcodec/vmnc.c
index 49aaeb2..e13452d 100644
--- a/libavcodec/vmnc.c
+++ b/libavcodec/vmnc.c
@@ -508,7 +508,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec vmnc_decoder = {
+AVCodec ff_vmnc_decoder = {
     "vmnc",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VMNC,
diff --git a/libavcodec/vorbis_dec.c b/libavcodec/vorbis_dec.c
index 8f15a21..cdb485a 100644
--- a/libavcodec/vorbis_dec.c
+++ b/libavcodec/vorbis_dec.c
@@ -1673,7 +1673,7 @@ static av_cold int vorbis_decode_close(AVCodecContext *avccontext)
     return 0 ;
 }
 
-AVCodec vorbis_decoder = {
+AVCodec ff_vorbis_decoder = {
     "vorbis",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_VORBIS,
diff --git a/libavcodec/vorbis_enc.c b/libavcodec/vorbis_enc.c
index 0a9c80d..93683ac 100644
--- a/libavcodec/vorbis_enc.c
+++ b/libavcodec/vorbis_enc.c
@@ -1102,7 +1102,7 @@ static av_cold int vorbis_encode_close(AVCodecContext *avccontext)
     return 0 ;
 }
 
-AVCodec vorbis_encoder = {
+AVCodec ff_vorbis_encoder = {
     "vorbis",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_VORBIS,
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
index a2a3974..7ba878e 100644
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@@ -2212,7 +2212,7 @@ static av_cold int theora_decode_init(AVCodecContext *avctx)
     return vp3_decode_init(avctx);
 }
 
-AVCodec theora_decoder = {
+AVCodec ff_theora_decoder = {
     "theora",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_THEORA,
@@ -2227,7 +2227,7 @@ AVCodec theora_decoder = {
 };
 #endif
 
-AVCodec vp3_decoder = {
+AVCodec ff_vp3_decoder = {
     "vp3",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VP3,
diff --git a/libavcodec/vp3_parser.c b/libavcodec/vp3_parser.c
index c22e6dd..4453447 100644
--- a/libavcodec/vp3_parser.c
+++ b/libavcodec/vp3_parser.c
@@ -35,7 +35,7 @@ static int parse(AVCodecParserContext *s,
     return buf_size;
 }
 
-AVCodecParser vp3_parser = {
+AVCodecParser ff_vp3_parser = {
     { CODEC_ID_THEORA, CODEC_ID_VP3,
       CODEC_ID_VP6,    CODEC_ID_VP6F, CODEC_ID_VP6A },
     0,
diff --git a/libavcodec/vp5.c b/libavcodec/vp5.c
index 7b3a487..e9de38e 100644
--- a/libavcodec/vp5.c
+++ b/libavcodec/vp5.c
@@ -266,7 +266,7 @@ static av_cold int vp5_decode_init(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec vp5_decoder = {
+AVCodec ff_vp5_decoder = {
     "vp5",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VP5,
diff --git a/libavcodec/vp6.c b/libavcodec/vp6.c
index d3a2f35..0a02ce5 100644
--- a/libavcodec/vp6.c
+++ b/libavcodec/vp6.c
@@ -606,7 +606,7 @@ static av_cold int vp6_decode_free(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec vp6_decoder = {
+AVCodec ff_vp6_decoder = {
     "vp6",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VP6,
@@ -620,7 +620,7 @@ AVCodec vp6_decoder = {
 };
 
 /* flash version, not flipped upside-down */
-AVCodec vp6f_decoder = {
+AVCodec ff_vp6f_decoder = {
     "vp6f",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VP6F,
@@ -634,7 +634,7 @@ AVCodec vp6f_decoder = {
 };
 
 /* flash version, not flipped upside-down, with alpha channel */
-AVCodec vp6a_decoder = {
+AVCodec ff_vp6a_decoder = {
     "vp6a",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VP6A,
diff --git a/libavcodec/vp8.c b/libavcodec/vp8.c
index 52a3f90..3691f15 100644
--- a/libavcodec/vp8.c
+++ b/libavcodec/vp8.c
@@ -1807,7 +1807,7 @@ static av_cold int vp8_decode_free(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec vp8_decoder = {
+AVCodec ff_vp8_decoder = {
     "vp8",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VP8,
diff --git a/libavcodec/vp8_parser.c b/libavcodec/vp8_parser.c
index 10e7c3b..e769e33 100644
--- a/libavcodec/vp8_parser.c
+++ b/libavcodec/vp8_parser.c
@@ -32,7 +32,7 @@ static int parse(AVCodecParserContext *s,
     return buf_size;
 }
 
-AVCodecParser vp8_parser = {
+AVCodecParser ff_vp8_parser = {
     { CODEC_ID_VP8 },
     0,
     NULL,
diff --git a/libavcodec/vqavideo.c b/libavcodec/vqavideo.c
index 97b8b50..c3b5ba6 100644
--- a/libavcodec/vqavideo.c
+++ b/libavcodec/vqavideo.c
@@ -609,7 +609,7 @@ static av_cold int vqa_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec vqa_decoder = {
+AVCodec ff_vqa_decoder = {
     "vqavideo",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_WS_VQA,
diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index d7bd265..e969814 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -1188,7 +1188,7 @@ static int wavpack_decode_frame(AVCodecContext *avctx,
     return s->samples_left > 0 ? 0 : avpkt->size;
 }
 
-AVCodec wavpack_decoder = {
+AVCodec ff_wavpack_decoder = {
     "wavpack",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_WAVPACK,
diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c
index 694b15d..b720ea5 100644
--- a/libavcodec/wmadec.c
+++ b/libavcodec/wmadec.c
@@ -939,7 +939,7 @@ static av_cold void flush(AVCodecContext *avctx)
     s->last_superframe_len= 0;
 }
 
-AVCodec wmav1_decoder =
+AVCodec ff_wmav1_decoder =
 {
     "wmav1",
     AVMEDIA_TYPE_AUDIO,
@@ -953,7 +953,7 @@ AVCodec wmav1_decoder =
     .long_name = NULL_IF_CONFIG_SMALL("Windows Media Audio 1"),
 };
 
-AVCodec wmav2_decoder =
+AVCodec ff_wmav2_decoder =
 {
     "wmav2",
     AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/wmaenc.c b/libavcodec/wmaenc.c
index f96aa3a..4e54a70 100644
--- a/libavcodec/wmaenc.c
+++ b/libavcodec/wmaenc.c
@@ -383,7 +383,7 @@ static int encode_superframe(AVCodecContext *avctx,
     return put_bits_ptr(&s->pb) - s->pb.buf;
 }
 
-AVCodec wmav1_encoder =
+AVCodec ff_wmav1_encoder =
 {
     "wmav1",
     AVMEDIA_TYPE_AUDIO,
@@ -396,7 +396,7 @@ AVCodec wmav1_encoder =
     .long_name = NULL_IF_CONFIG_SMALL("Windows Media Audio 1"),
 };
 
-AVCodec wmav2_encoder =
+AVCodec ff_wmav2_encoder =
 {
     "wmav2",
     AVMEDIA_TYPE_AUDIO,
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index 5941781..e779984 100644
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -1603,7 +1603,7 @@ static void flush(AVCodecContext *avctx)
 /**
  *@brief wmapro decoder
  */
-AVCodec wmapro_decoder = {
+AVCodec ff_wmapro_decoder = {
     "wmapro",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_WMAPRO,
diff --git a/libavcodec/wmavoice.c b/libavcodec/wmavoice.c
index aa3b2b8..13011ec 100644
--- a/libavcodec/wmavoice.c
+++ b/libavcodec/wmavoice.c
@@ -2018,7 +2018,7 @@ static av_cold void wmavoice_flush(AVCodecContext *ctx)
     }
 }
 
-AVCodec wmavoice_decoder = {
+AVCodec ff_wmavoice_decoder = {
     "wmavoice",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_WMAVOICE,
diff --git a/libavcodec/wmv2dec.c b/libavcodec/wmv2dec.c
index 7dba7c5..768b819 100644
--- a/libavcodec/wmv2dec.c
+++ b/libavcodec/wmv2dec.c
@@ -484,7 +484,7 @@ static av_cold int wmv2_decode_end(AVCodecContext *avctx)
     return ff_h263_decode_end(avctx);
 }
 
-AVCodec wmv2_decoder = {
+AVCodec ff_wmv2_decoder = {
     "wmv2",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_WMV2,
diff --git a/libavcodec/wmv2enc.c b/libavcodec/wmv2enc.c
index 7416f85..f2ab55b 100644
--- a/libavcodec/wmv2enc.c
+++ b/libavcodec/wmv2enc.c
@@ -211,7 +211,7 @@ void ff_wmv2_encode_mb(MpegEncContext * s,
     }
 }
 
-AVCodec wmv2_encoder = {
+AVCodec ff_wmv2_encoder = {
     "wmv2",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_WMV2,
diff --git a/libavcodec/wnv1.c b/libavcodec/wnv1.c
index 56634d1..2f96039 100644
--- a/libavcodec/wnv1.c
+++ b/libavcodec/wnv1.c
@@ -154,7 +154,7 @@ static av_cold int decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec wnv1_decoder = {
+AVCodec ff_wnv1_decoder = {
     "wnv1",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_WNV1,
diff --git a/libavcodec/ws-snd1.c b/libavcodec/ws-snd1.c
index c16c99a..d6a60d4 100644
--- a/libavcodec/ws-snd1.c
+++ b/libavcodec/ws-snd1.c
@@ -146,7 +146,7 @@ static int ws_snd_decode_frame(AVCodecContext *avctx,
     return buf_size;
 }
 
-AVCodec ws_snd1_decoder = {
+AVCodec ff_ws_snd1_decoder = {
     "ws_snd1",
     AVMEDIA_TYPE_AUDIO,
     CODEC_ID_WESTWOOD_SND1,
diff --git a/libavcodec/xan.c b/libavcodec/xan.c
index fbd383f..0ae84a6 100644
--- a/libavcodec/xan.c
+++ b/libavcodec/xan.c
@@ -564,7 +564,7 @@ static av_cold int xan_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec xan_wc3_decoder = {
+AVCodec ff_xan_wc3_decoder = {
     "xan_wc3",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_XAN_WC3,
@@ -578,7 +578,7 @@ AVCodec xan_wc3_decoder = {
 };
 
 /*
-AVCodec xan_wc4_decoder = {
+AVCodec ff_xan_wc4_decoder = {
     "xan_wc4",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_XAN_WC4,
diff --git a/libavcodec/xl.c b/libavcodec/xl.c
index f7d025e..7fbe626 100644
--- a/libavcodec/xl.c
+++ b/libavcodec/xl.c
@@ -138,7 +138,7 @@ static av_cold int decode_end(AVCodecContext *avctx){
     return 0;
 }
 
-AVCodec xl_decoder = {
+AVCodec ff_xl_decoder = {
     "xl",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_VIXL,
diff --git a/libavcodec/xsubdec.c b/libavcodec/xsubdec.c
index 22f9898..872b227 100644
--- a/libavcodec/xsubdec.c
+++ b/libavcodec/xsubdec.c
@@ -131,7 +131,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     return buf_size;
 }
 
-AVCodec xsub_decoder = {
+AVCodec ff_xsub_decoder = {
     "xsub",
     AVMEDIA_TYPE_SUBTITLE,
     CODEC_ID_XSUB,
diff --git a/libavcodec/xsubenc.c b/libavcodec/xsubenc.c
index 60f4979..c448a22 100644
--- a/libavcodec/xsubenc.c
+++ b/libavcodec/xsubenc.c
@@ -210,7 +210,7 @@ static av_cold int xsub_encoder_init(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec xsub_encoder = {
+AVCodec ff_xsub_encoder = {
     "xsub",
     AVMEDIA_TYPE_SUBTITLE,
     CODEC_ID_XSUB,
diff --git a/libavcodec/yop.c b/libavcodec/yop.c
index 57d100c..6a75e74 100644
--- a/libavcodec/yop.c
+++ b/libavcodec/yop.c
@@ -248,7 +248,7 @@ static int yop_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     return avpkt->size;
 }
 
-AVCodec yop_decoder = {
+AVCodec ff_yop_decoder = {
     "yop",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_YOP,
diff --git a/libavcodec/zmbv.c b/libavcodec/zmbv.c
index 6ac9089..f660cd4 100644
--- a/libavcodec/zmbv.c
+++ b/libavcodec/zmbv.c
@@ -650,7 +650,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec zmbv_decoder = {
+AVCodec ff_zmbv_decoder = {
     "zmbv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ZMBV,
diff --git a/libavcodec/zmbvenc.c b/libavcodec/zmbvenc.c
index 95f2906..b830bb4 100644
--- a/libavcodec/zmbvenc.c
+++ b/libavcodec/zmbvenc.c
@@ -323,7 +323,7 @@ static av_cold int encode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec zmbv_encoder = {
+AVCodec ff_zmbv_encoder = {
     "zmbv",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_ZMBV,