Initial revision
[libav.git] / Changelog
1version 0.4.5:
3- some header fixes (Zdenek Kabelac <>).
4- many MMX optimizations (Nick Kurshev <>).
5- added configure system (actually a small shell script).
6- added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
7 Michael Hipp (temporary solution - waiting for integer only
8 decoder).
9- fixed VIDIOCSYNC interrupt.
10- added Intel H263 decoding support ('I263' avi fourCC)
11- added Real Video 1.0 decoding (needs further testing).
12- simplified image formats again. Added PGM format (=grey
13 pgm). Renamed old PGM to PGMYUV.
14- fixed msmpeg4 slice issues (tell me if you still find problems).
15- fixed opendivx bugs with newer versions (added VOL header decoding).
16- added support for mplayer interface.
18version 0.4.4:
20- fixed some std header definitions (Bjorn Lindgren
21 <>).
22- added mpeg demux (mpeg 1 and 2 compatible).
23- added ASF demux.
24- added prototype RM demux.
25- added AC3 decoding (done with libac3 by Aaron Holtzman).
26- added decoding codec parameter guessing (.e.g. for mpeg, because the
27 header does not include them).
28- fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
29 play them (only tested video).
30- fixed h263 white bug.
31- fixed phase rounding in img resample filter.
32- add mmx code for polyphase img resample filter.
33- added CPU autodetect.
34- added generic title/author/copyright/comment string handling (ASF and RM use them).
35- added SWF demux to extract MP3 track (not usable yet because no MP3
36 decoder).
37- added fractional frame rate support.
38- codecs are no longer searched by read_header() (should fix ffserver
39 segfault).
41version 0.4.3:
43- BGR24 patch (initial patch by Jeroen Vreeken <>).
44- fixed raw yuv output.
45- added motion rounding support in MPEG4.
46- fixed motion bug rounding in MSMPEG4.
47- added B frame handling in video core.
48- added full MPEG1 decoding support.
49- added partial (frame only) MPEG2 support.
50- changed the FOURCC code for H.263 to "U263" to be able to see the
51+AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
52this +codec ;) (JuanJo).
53- Halfpel motion estimation after mb type selection (JuanJo).
54- added pgm and .Y.U.V output format.
55- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
56 output.
57- added pgmpipe I/O format (original patch from Martin Aumueller
58 <>, but changed completely since we use a format
59 instead of a protocol).
61version 0.4.2:
63- added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
64 (for openDIVX) is almost complete: 8x8 MVs and rounding are
65 missing. MSMPEG4 support is complete.
66- added prototype MPEG1 decoder. Only I and P frames handled yet (it
67 can decode ffmpeg mpegs :-)).
68- added libavcodec API documentation (see apiexample.c).
69- fixed image polyphase bug (the bottom of some images could be
70 greenish).
71- added support for non clipped motion vectors (decoding only)
72 and image sizes non multiple of 16.
73- added support for AC prediction (decoding only).
74- added file overwrite confirmation (can be disabled with -y).
75- Added custom size picture to H.263 using H.263+ (Juanjo).
77version 0.4.1:
79- added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
80 of avi and asf to DIV3.
81- added -me option to set motion estimation method
82 (default=log). suppressed redundant -hq option.
83- added options -acodec and -vcodec to force a given codec (useful for
84 AVI for example).
85- fixed -an option.
86- improved dct_quantize speed.
87- factorized some motion estimation code.
89version 0.4.0:
91- removing grab code from ffserver and moved it to ffmpeg. Added multi
92 stream support to ffmpeg.
93- added timeshifting support for live feeds (option ?date=xxx in the
94 URL).
95- added high quality image resize code with polyphase filter (need
96 mmx/see optimisation). Enable multiple image size support in ffserver.
97- added multi live feed support in ffserver.
98- suppressed master feature from ffserver (it should be done with an
99 external program which opens the .ffm url and writes it to another
100 ffserver).
101- added preliminary support for video stream parsing (wav and avi half
102 done). Added proper support for audio/video file convertion in
103 ffmpeg.
104- added preliminary support for video file sending from ffserver.
105- redesigning I/O subsystem : now using URL based input and output
106 (see avio.h).
107- added wav format support.
108- added "tty user interface" to ffmpeg to stop grabbing gracefully.
109- added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
110 (Juan J. Sierralta P. a.k.a. "Juanjo" <>).
111- added MMX DCT from mpeg2_movie 1.5 (Juanjo).
112- added new motion estimation algorithms, log and phods (Juanjo).
113- changed directories : libav for format handling, libavcodec for
114 codecs.
116version 0.3.4:
118- added stereo in mpeg audio encoder.
120version 0.3.3:
122- added 'high quality' mode which use motion vectors. It can be used in
123 real time at low resolution.
124- fixed rounding problems which caused quality problems at high
125 bitrates and large gop size.
127version 0.3.2: small fixes
129- asf fixes
130- put_seek bug fix
132version 0.3.1: added avi/divx support
134- added avi support
135- added mpeg4 codec compatible with open divx. It is based on the h263
136 codec.
137- added sound for flash format (not tested)
139version 0.3: initial public release