jpeg hack
[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.
16fbebe1 17- added macroblock skip optimization.
0c1e384c 18- added MJPEG decoder.
16fbebe1 19- added mmx/mmxext idct from libmpeg2.
20- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
21 <>).
22- added pixel format convertion layer (e.g. for MJPEG or PPM).
23- added deinterlacing option.
24- mpeg1/2 fixes.
25- mpeg4 vol header fixes (Jonathan Marsden <>).
26- ARM optimizations (Lionel Ulmer <>).
27- Windows porting of file converter.
29version 0.4.4:
31- fixed some std header definitions (Bjorn Lindgren
32 <>).
33- added mpeg demux (mpeg 1 and 2 compatible).
34- added ASF demux.
35- added prototype RM demux.
36- added AC3 decoding (done with libac3 by Aaron Holtzman).
37- added decoding codec parameter guessing (.e.g. for mpeg, because the
38 header does not include them).
39- fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
40 play them (only tested video).
41- fixed h263 white bug.
42- fixed phase rounding in img resample filter.
43- add mmx code for polyphase img resample filter.
44- added CPU autodetect.
45- added generic title/author/copyright/comment string handling (ASF and RM use them).
46- added SWF demux to extract MP3 track (not usable yet because no MP3
47 decoder).
48- added fractional frame rate support.
49- codecs are no longer searched by read_header() (should fix ffserver
50 segfault).
52version 0.4.3:
54- BGR24 patch (initial patch by Jeroen Vreeken <>).
55- fixed raw yuv output.
56- added motion rounding support in MPEG4.
57- fixed motion bug rounding in MSMPEG4.
58- added B frame handling in video core.
59- added full MPEG1 decoding support.
60- added partial (frame only) MPEG2 support.
61- changed the FOURCC code for H.263 to "U263" to be able to see the
62+AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
63this +codec ;) (JuanJo).
64- Halfpel motion estimation after mb type selection (JuanJo).
65- added pgm and .Y.U.V output format.
66- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
67 output.
68- added pgmpipe I/O format (original patch from Martin Aumueller
69 <>, but changed completely since we use a format
70 instead of a protocol).
72version 0.4.2:
74- added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
75 (for openDIVX) is almost complete: 8x8 MVs and rounding are
76 missing. MSMPEG4 support is complete.
77- added prototype MPEG1 decoder. Only I and P frames handled yet (it
78 can decode ffmpeg mpegs :-)).
79- added libavcodec API documentation (see apiexample.c).
80- fixed image polyphase bug (the bottom of some images could be
81 greenish).
82- added support for non clipped motion vectors (decoding only)
83 and image sizes non multiple of 16.
84- added support for AC prediction (decoding only).
85- added file overwrite confirmation (can be disabled with -y).
86- Added custom size picture to H.263 using H.263+ (Juanjo).
88version 0.4.1:
90- added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
91 of avi and asf to DIV3.
92- added -me option to set motion estimation method
93 (default=log). suppressed redundant -hq option.
94- added options -acodec and -vcodec to force a given codec (useful for
95 AVI for example).
96- fixed -an option.
97- improved dct_quantize speed.
98- factorized some motion estimation code.
100version 0.4.0:
102- removing grab code from ffserver and moved it to ffmpeg. Added multi
103 stream support to ffmpeg.
104- added timeshifting support for live feeds (option ?date=xxx in the
105 URL).
106- added high quality image resize code with polyphase filter (need
107 mmx/see optimisation). Enable multiple image size support in ffserver.
108- added multi live feed support in ffserver.
109- suppressed master feature from ffserver (it should be done with an
110 external program which opens the .ffm url and writes it to another
111 ffserver).
112- added preliminary support for video stream parsing (wav and avi half
113 done). Added proper support for audio/video file convertion in
114 ffmpeg.
115- added preliminary support for video file sending from ffserver.
116- redesigning I/O subsystem : now using URL based input and output
117 (see avio.h).
118- added wav format support.
119- added "tty user interface" to ffmpeg to stop grabbing gracefully.
120- added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
121 (Juan J. Sierralta P. a.k.a. "Juanjo" <>).
122- added MMX DCT from mpeg2_movie 1.5 (Juanjo).
123- added new motion estimation algorithms, log and phods (Juanjo).
124- changed directories : libav for format handling, libavcodec for
125 codecs.
127version 0.3.4:
129- added stereo in mpeg audio encoder.
131version 0.3.3:
133- added 'high quality' mode which use motion vectors. It can be used in
134 real time at low resolution.
135- fixed rounding problems which caused quality problems at high
136 bitrates and large gop size.
138version 0.3.2: small fixes
140- asf fixes
141- put_seek bug fix
143version 0.3.1: added avi/divx support
145- added avi support
146- added mpeg4 codec compatible with open divx. It is based on the h263
147 codec.
148- added sound for flash format (not tested)
150version 0.3: initial public release