version 0.4.6: - completely new mpeg audio layer 1/2/3 decoder rewritten from scratch. - recoded dct and motion vector search with gcc (no longer depends on nasm). - fix quantization bug in AC3 encoder. version 0.4.5: - some header fixes (Zdenek Kabelac ). - many MMX optimizations (Nick Kurshev ). - added configure system (actually a small shell script). - added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by Michael Hipp (temporary solution - waiting for integer only decoder). - fixed VIDIOCSYNC interrupt. - added Intel H263 decoding support ('I263' avi fourCC) - added Real Video 1.0 decoding (needs further testing). - simplified image formats again. Added PGM format (=grey pgm). Renamed old PGM to PGMYUV. - fixed msmpeg4 slice issues (tell me if you still find problems). - fixed opendivx bugs with newer versions (added VOL header decoding). - added support for mplayer interface. - added macroblock skip optimization. - added MJPEG decoder. - added mmx/mmxext idct from libmpeg2. - added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer ). - added pixel format convertion layer (e.g. for MJPEG or PPM). - added deinterlacing option. - mpeg1/2 fixes. - mpeg4 vol header fixes (Jonathan Marsden ). - ARM optimizations (Lionel Ulmer ). - Windows porting of file converter. - added MJPEG raw format (input/ouput). - added JPEG image format support (input/output). version 0.4.4: - fixed some std header definitions (Bjorn Lindgren ). - added mpeg demux (mpeg 1 and 2 compatible). - added ASF demux. - added prototype RM demux. - added AC3 decoding (done with libac3 by Aaron Holtzman). - added decoding codec parameter guessing (.e.g. for mpeg, because the header does not include them). - fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now play them (only tested video). - fixed h263 white bug. - fixed phase rounding in img resample filter. - add mmx code for polyphase img resample filter. - added CPU autodetect. - added generic title/author/copyright/comment string handling (ASF and RM use them). - added SWF demux to extract MP3 track (not usable yet because no MP3 decoder). - added fractional frame rate support. - codecs are no longer searched by read_header() (should fix ffserver segfault). version 0.4.3: - BGR24 patch (initial patch by Jeroen Vreeken ). - fixed raw yuv output. - added motion rounding support in MPEG4. - fixed motion bug rounding in MSMPEG4. - added B frame handling in video core. - added full MPEG1 decoding support. - added partial (frame only) MPEG2 support. - changed the FOURCC code for H.263 to "U263" to be able to see the +AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with this +codec ;) (JuanJo). - Halfpel motion estimation after mb type selection (JuanJo). - added pgm and .Y.U.V output format. - suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or output. - added pgmpipe I/O format (original patch from Martin Aumueller , but changed completely since we use a format instead of a protocol). version 0.4.2: - added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support (for openDIVX) is almost complete: 8x8 MVs and rounding are missing. MSMPEG4 support is complete. - added prototype MPEG1 decoder. Only I and P frames handled yet (it can decode ffmpeg mpegs :-)). - added libavcodec API documentation (see apiexample.c). - fixed image polyphase bug (the bottom of some images could be greenish). - added support for non clipped motion vectors (decoding only) and image sizes non multiple of 16. - added support for AC prediction (decoding only). - added file overwrite confirmation (can be disabled with -y). - Added custom size picture to H.263 using H.263+ (Juanjo). version 0.4.1: - added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec of avi and asf to DIV3. - added -me option to set motion estimation method (default=log). suppressed redundant -hq option. - added options -acodec and -vcodec to force a given codec (useful for AVI for example). - fixed -an option. - improved dct_quantize speed. - factorized some motion estimation code. version 0.4.0: - removing grab code from ffserver and moved it to ffmpeg. Added multi stream support to ffmpeg. - added timeshifting support for live feeds (option ?date=xxx in the URL). - added high quality image resize code with polyphase filter (need mmx/see optimisation). Enable multiple image size support in ffserver. - added multi live feed support in ffserver. - suppressed master feature from ffserver (it should be done with an external program which opens the .ffm url and writes it to another ffserver). - added preliminary support for video stream parsing (wav and avi half done). Added proper support for audio/video file convertion in ffmpeg. - added preliminary support for video file sending from ffserver. - redesigning I/O subsystem : now using URL based input and output (see avio.h). - added wav format support. - added "tty user interface" to ffmpeg to stop grabbing gracefully. - added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences) (Juan J. Sierralta P. a.k.a. "Juanjo" ). - added MMX DCT from mpeg2_movie 1.5 (Juanjo). - added new motion estimation algorithms, log and phods (Juanjo). - changed directories : libav for format handling, libavcodec for codecs. version 0.3.4: - added stereo in mpeg audio encoder. version 0.3.3: - added 'high quality' mode which use motion vectors. It can be used in real time at low resolution. - fixed rounding problems which caused quality problems at high bitrates and large gop size. version 0.3.2: small fixes - asf fixes - put_seek bug fix version 0.3.1: added avi/divx support - added avi support - added mpeg4 codec compatible with open divx. It is based on the h263 codec. - added sound for flash format (not tested) version 0.3: initial public release