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authorMartin Storsjö <martin@martin.st>2013-09-09 15:04:57 +0300
committerMartin Storsjö <martin@martin.st>2013-09-17 23:30:31 +0300
commite7bf085b78586a04b918f4e76587779d04674700 (patch)
treeb100ea00cb70609d310df790ae53435687181256 /libavformat
parenta4adabb460ace39783d707a5b3bbe28b4b5b9dc4 (diff)
downloadffmpeg-streaming-e7bf085b78586a04b918f4e76587779d04674700.zip
ffmpeg-streaming-e7bf085b78586a04b918f4e76587779d04674700.tar.gz
movenc: Add an option for omitting the tfhd base offset
This makes the output fragments independent of their position in the output stream, making the output work better when streamed. QuickTime Player doesn't support fragmented mp4 without the base data offset, though. Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavformat')
-rw-r--r--libavformat/movenc.c23
-rw-r--r--libavformat/movenc.h1
-rw-r--r--libavformat/version.h2
3 files changed, 18 insertions, 8 deletions
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 051d6ac..7d634ad 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -52,6 +52,7 @@ static const AVOption options[] = {
{ "frag_custom", "Flush fragments on caller requests", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_CUSTOM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "isml", "Create a live smooth streaming feed (for pushing to a publishing point)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_ISML}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "faststart", "Run a second pass to put the index (moov atom) at the beginning of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FASTSTART}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
+ { "omit_tfhd_offset", "Omit the base data offset in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_OMIT_TFHD_OFFSET}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
{ "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{ "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
@@ -2212,8 +2213,8 @@ static int mov_write_mfhd_tag(AVIOContext *pb, MOVMuxContext *mov)
return 0;
}
-static int mov_write_tfhd_tag(AVIOContext *pb, MOVTrack *track,
- int64_t moof_offset)
+static int mov_write_tfhd_tag(AVIOContext *pb, MOVMuxContext *mov,
+ MOVTrack *track, int64_t moof_offset)
{
int64_t pos = avio_tell(pb);
uint32_t flags = MOV_TFHD_DEFAULT_SIZE | MOV_TFHD_DEFAULT_DURATION |
@@ -2223,6 +2224,8 @@ static int mov_write_tfhd_tag(AVIOContext *pb, MOVTrack *track,
} else {
flags |= MOV_TFHD_DEFAULT_FLAGS;
}
+ if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET)
+ flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
/* Don't set a default sample size, the silverlight player refuses
* to play files with that set. Don't set a default sample duration,
@@ -2267,7 +2270,8 @@ static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)
(MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES | MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC);
}
-static int mov_write_trun_tag(AVIOContext *pb, MOVTrack *track, int moof_size)
+static int mov_write_trun_tag(AVIOContext *pb, MOVMuxContext *mov,
+ MOVTrack *track, int moof_size)
{
int64_t pos = avio_tell(pb);
uint32_t flags = MOV_TRUN_DATA_OFFSET;
@@ -2292,8 +2296,13 @@ static int mov_write_trun_tag(AVIOContext *pb, MOVTrack *track, int moof_size)
avio_wb24(pb, flags);
avio_wb32(pb, track->entry); /* sample count */
- avio_wb32(pb, moof_size + 8 + track->data_offset +
- track->cluster[0].pos); /* data offset */
+ if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
+ !(mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) &&
+ track->track_id != 1)
+ avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
+ else
+ avio_wb32(pb, moof_size + 8 + track->data_offset +
+ track->cluster[0].pos); /* data offset */
if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)
avio_wb32(pb, get_sample_flags(track, &track->cluster[0]));
@@ -2389,8 +2398,8 @@ static int mov_write_traf_tag(AVIOContext *pb, MOVMuxContext *mov,
avio_wb32(pb, 0); /* size placeholder */
ffio_wfourcc(pb, "traf");
- mov_write_tfhd_tag(pb, track, moof_offset);
- mov_write_trun_tag(pb, track, moof_size);
+ mov_write_tfhd_tag(pb, mov, track, moof_offset);
+ mov_write_trun_tag(pb, mov, track, moof_size);
if (mov->mode == MODE_ISM) {
mov_write_tfxd_tag(pb, track);
diff --git a/libavformat/movenc.h b/libavformat/movenc.h
index bcb87e1..fefb20b 100644
--- a/libavformat/movenc.h
+++ b/libavformat/movenc.h
@@ -168,6 +168,7 @@ typedef struct MOVMuxContext {
#define FF_MOV_FLAG_FRAG_CUSTOM 32
#define FF_MOV_FLAG_ISML 64
#define FF_MOV_FLAG_FASTSTART 128
+#define FF_MOV_FLAG_OMIT_TFHD_OFFSET 256
int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt);
diff --git a/libavformat/version.h b/libavformat/version.h
index 38c959f..53ce060 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -30,7 +30,7 @@
#include "libavutil/avutil.h"
#define LIBAVFORMAT_VERSION_MAJOR 55
-#define LIBAVFORMAT_VERSION_MINOR 4
+#define LIBAVFORMAT_VERSION_MINOR 5
#define LIBAVFORMAT_VERSION_MICRO 0
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
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