PATCH by Rik Snel <>
[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)
10- added Advanced Prediction Mode on H.263/H.263+ decoder. (Juanjo)
11- now we can decode H.263 streams found on QuickTime files. (Juanjo)
12- now we can decode H.263 streams found on VIVO v1 files.(Juanjo)
13- preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
14- added GOB header for H.263/H.263+ coding on RTP mode. (Juanjo)
15- now H.263 picture size is returned on the first decoded frame. (Juanjo)
739d6efa 16
17version 0.4.5:
19- some header fixes (Zdenek Kabelac <>).
20- many MMX optimizations (Nick Kurshev <>).
21- added configure system (actually a small shell script).
22- added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
23 Michael Hipp (temporary solution - waiting for integer only
24 decoder).
25- fixed VIDIOCSYNC interrupt.
26- added Intel H263 decoding support ('I263' avi fourCC)
27- added Real Video 1.0 decoding (needs further testing).
28- simplified image formats again. Added PGM format (=grey
29 pgm). Renamed old PGM to PGMYUV.
30- fixed msmpeg4 slice issues (tell me if you still find problems).
31- fixed opendivx bugs with newer versions (added VOL header decoding).
32- added support for mplayer interface.
16fbebe1 33- added macroblock skip optimization.
0c1e384c 34- added MJPEG decoder.
16fbebe1 35- added mmx/mmxext idct from libmpeg2.
36- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
37 <>).
38- added pixel format convertion layer (e.g. for MJPEG or PPM).
39- added deinterlacing option.
40- mpeg1/2 fixes.
41- mpeg4 vol header fixes (Jonathan Marsden <>).
42- ARM optimizations (Lionel Ulmer <>).
43- Windows porting of file converter.
44- added MJPEG raw format (input/ouput).
45- added JPEG image format support (input/output).
47version 0.4.4:
49- fixed some std header definitions (Bjorn Lindgren
50 <>).
51- added mpeg demux (mpeg 1 and 2 compatible).
52- added ASF demux.
53- added prototype RM demux.
54- added AC3 decoding (done with libac3 by Aaron Holtzman).
55- added decoding codec parameter guessing (.e.g. for mpeg, because the
56 header does not include them).
57- fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
58 play them (only tested video).
59- fixed h263 white bug.
60- fixed phase rounding in img resample filter.
61- add mmx code for polyphase img resample filter.
62- added CPU autodetect.
63- added generic title/author/copyright/comment string handling (ASF and RM use them).
64- added SWF demux to extract MP3 track (not usable yet because no MP3
65 decoder).
66- added fractional frame rate support.
67- codecs are no longer searched by read_header() (should fix ffserver
68 segfault).
70version 0.4.3:
72- BGR24 patch (initial patch by Jeroen Vreeken <>).
73- fixed raw yuv output.
74- added motion rounding support in MPEG4.
75- fixed motion bug rounding in MSMPEG4.
76- added B frame handling in video core.
77- added full MPEG1 decoding support.
78- added partial (frame only) MPEG2 support.
79- changed the FOURCC code for H.263 to "U263" to be able to see the
80+AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
81this +codec ;) (JuanJo).
82- Halfpel motion estimation after mb type selection (JuanJo).
83- added pgm and .Y.U.V output format.
84- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
85 output.
86- added pgmpipe I/O format (original patch from Martin Aumueller
87 <>, but changed completely since we use a format
88 instead of a protocol).
90version 0.4.2:
92- added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
93 (for openDIVX) is almost complete: 8x8 MVs and rounding are
94 missing. MSMPEG4 support is complete.
95- added prototype MPEG1 decoder. Only I and P frames handled yet (it
96 can decode ffmpeg mpegs :-)).
97- added libavcodec API documentation (see apiexample.c).
98- fixed image polyphase bug (the bottom of some images could be
99 greenish).
100- added support for non clipped motion vectors (decoding only)
101 and image sizes non multiple of 16.
102- added support for AC prediction (decoding only).
103- added file overwrite confirmation (can be disabled with -y).
104- Added custom size picture to H.263 using H.263+ (Juanjo).
106version 0.4.1:
108- added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
109 of avi and asf to DIV3.
110- added -me option to set motion estimation method
111 (default=log). suppressed redundant -hq option.
112- added options -acodec and -vcodec to force a given codec (useful for
113 AVI for example).
114- fixed -an option.
115- improved dct_quantize speed.
116- factorized some motion estimation code.
118version 0.4.0:
120- removing grab code from ffserver and moved it to ffmpeg. Added multi
121 stream support to ffmpeg.
122- added timeshifting support for live feeds (option ?date=xxx in the
123 URL).
124- added high quality image resize code with polyphase filter (need
125 mmx/see optimisation). Enable multiple image size support in ffserver.
126- added multi live feed support in ffserver.
127- suppressed master feature from ffserver (it should be done with an
128 external program which opens the .ffm url and writes it to another
129 ffserver).
130- added preliminary support for video stream parsing (wav and avi half
131 done). Added proper support for audio/video file convertion in
132 ffmpeg.
133- added preliminary support for video file sending from ffserver.
134- redesigning I/O subsystem : now using URL based input and output
135 (see avio.h).
136- added wav format support.
137- added "tty user interface" to ffmpeg to stop grabbing gracefully.
138- added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
139 (Juan J. Sierralta P. a.k.a. "Juanjo" <>).
140- added MMX DCT from mpeg2_movie 1.5 (Juanjo).
141- added new motion estimation algorithms, log and phods (Juanjo).
142- changed directories : libav for format handling, libavcodec for
143 codecs.
145version 0.3.4:
147- added stereo in mpeg audio encoder.
149version 0.3.3:
151- added 'high quality' mode which use motion vectors. It can be used in
152 real time at low resolution.
153- fixed rounding problems which caused quality problems at high
154 bitrates and large gop size.
156version 0.3.2: small fixes
158- asf fixes
159- put_seek bug fix
161version 0.3.1: added avi/divx support
163- added avi support
164- added mpeg4 codec compatible with open divx. It is based on the h263
165 codec.
166- added sound for flash format (not tested)
168version 0.3: initial public release