added first version of regression tests - simply type 'make test' to test every codec...
[libav.git] / Changelog
1version 0.4.6:
3- completely new mpeg audio layer 1/2/3 decoder rewritten from
4 scratch.
5- recoded dct and motion vector search with gcc (no longer depends on
6 nasm).
7- fix quantization bug in AC3 encoder.
8- added GOB header parsing on H.263/H.263+ decoder. (Juanjo)
9- bug fix on MCBPC tables of H.263. (Juanjo)
81401c1f 10- bug fix on DC coefficients of H.263. (Juanjo)
11- added Advanced Prediction Mode on H.263/H.263+ decoder. (Juanjo)
12- now we can decode H.263 streams found on QuickTime files. (Juanjo)
13- now we can decode H.263 streams found on VIVO v1 files.(Juanjo)
14- preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
15- added GOB header for H.263/H.263+ coding on RTP mode. (Juanjo)
16- now H.263 picture size is returned on the first decoded frame. (Juanjo)
739d6efa 17
18version 0.4.5:
20- some header fixes (Zdenek Kabelac <>).
21- many MMX optimizations (Nick Kurshev <>).
22- added configure system (actually a small shell script).
23- added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
24 Michael Hipp (temporary solution - waiting for integer only
25 decoder).
26- fixed VIDIOCSYNC interrupt.
27- added Intel H263 decoding support ('I263' avi fourCC)
28- added Real Video 1.0 decoding (needs further testing).
29- simplified image formats again. Added PGM format (=grey
30 pgm). Renamed old PGM to PGMYUV.
31- fixed msmpeg4 slice issues (tell me if you still find problems).
32- fixed opendivx bugs with newer versions (added VOL header decoding).
33- added support for mplayer interface.
16fbebe1 34- added macroblock skip optimization.
0c1e384c 35- added MJPEG decoder.
16fbebe1 36- added mmx/mmxext idct from libmpeg2.
37- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
38 <>).
39- added pixel format convertion layer (e.g. for MJPEG or PPM).
40- added deinterlacing option.
41- mpeg1/2 fixes.
42- mpeg4 vol header fixes (Jonathan Marsden <>).
43- ARM optimizations (Lionel Ulmer <>).
44- Windows porting of file converter.
45- added MJPEG raw format (input/ouput).
46- added JPEG image format support (input/output).
48version 0.4.4:
50- fixed some std header definitions (Bjorn Lindgren
51 <>).
52- added mpeg demux (mpeg 1 and 2 compatible).
53- added ASF demux.
54- added prototype RM demux.
55- added AC3 decoding (done with libac3 by Aaron Holtzman).
56- added decoding codec parameter guessing (.e.g. for mpeg, because the
57 header does not include them).
58- fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
59 play them (only tested video).
60- fixed h263 white bug.
61- fixed phase rounding in img resample filter.
62- add mmx code for polyphase img resample filter.
63- added CPU autodetect.
64- added generic title/author/copyright/comment string handling (ASF and RM use them).
65- added SWF demux to extract MP3 track (not usable yet because no MP3
66 decoder).
67- added fractional frame rate support.
68- codecs are no longer searched by read_header() (should fix ffserver
69 segfault).
71version 0.4.3:
73- BGR24 patch (initial patch by Jeroen Vreeken <>).
74- fixed raw yuv output.
75- added motion rounding support in MPEG4.
76- fixed motion bug rounding in MSMPEG4.
77- added B frame handling in video core.
78- added full MPEG1 decoding support.
79- added partial (frame only) MPEG2 support.
80- changed the FOURCC code for H.263 to "U263" to be able to see the
81+AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
82this +codec ;) (JuanJo).
83- Halfpel motion estimation after mb type selection (JuanJo).
84- added pgm and .Y.U.V output format.
85- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
86 output.
87- added pgmpipe I/O format (original patch from Martin Aumueller
88 <>, but changed completely since we use a format
89 instead of a protocol).
91version 0.4.2:
93- added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
94 (for openDIVX) is almost complete: 8x8 MVs and rounding are
95 missing. MSMPEG4 support is complete.
96- added prototype MPEG1 decoder. Only I and P frames handled yet (it
97 can decode ffmpeg mpegs :-)).
98- added libavcodec API documentation (see apiexample.c).
99- fixed image polyphase bug (the bottom of some images could be
100 greenish).
101- added support for non clipped motion vectors (decoding only)
102 and image sizes non multiple of 16.
103- added support for AC prediction (decoding only).
104- added file overwrite confirmation (can be disabled with -y).
105- Added custom size picture to H.263 using H.263+ (Juanjo).
107version 0.4.1:
109- added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
110 of avi and asf to DIV3.
111- added -me option to set motion estimation method
112 (default=log). suppressed redundant -hq option.
113- added options -acodec and -vcodec to force a given codec (useful for
114 AVI for example).
115- fixed -an option.
116- improved dct_quantize speed.
117- factorized some motion estimation code.
119version 0.4.0:
121- removing grab code from ffserver and moved it to ffmpeg. Added multi
122 stream support to ffmpeg.
123- added timeshifting support for live feeds (option ?date=xxx in the
124 URL).
125- added high quality image resize code with polyphase filter (need
126 mmx/see optimisation). Enable multiple image size support in ffserver.
127- added multi live feed support in ffserver.
128- suppressed master feature from ffserver (it should be done with an
129 external program which opens the .ffm url and writes it to another
130 ffserver).
131- added preliminary support for video stream parsing (wav and avi half
132 done). Added proper support for audio/video file convertion in
133 ffmpeg.
134- added preliminary support for video file sending from ffserver.
135- redesigning I/O subsystem : now using URL based input and output
136 (see avio.h).
137- added wav format support.
138- added "tty user interface" to ffmpeg to stop grabbing gracefully.
139- added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
140 (Juan J. Sierralta P. a.k.a. "Juanjo" <>).
141- added MMX DCT from mpeg2_movie 1.5 (Juanjo).
142- added new motion estimation algorithms, log and phods (Juanjo).
143- changed directories : libav for format handling, libavcodec for
144 codecs.
146version 0.3.4:
148- added stereo in mpeg audio encoder.
150version 0.3.3:
152- added 'high quality' mode which use motion vectors. It can be used in
153 real time at low resolution.
154- fixed rounding problems which caused quality problems at high
155 bitrates and large gop size.
157version 0.3.2: small fixes
159- asf fixes
160- put_seek bug fix
162version 0.3.1: added avi/divx support
164- added avi support
165- added mpeg4 codec compatible with open divx. It is based on the h263
166 codec.
167- added sound for flash format (not tested)
169version 0.3: initial public release