Change order of extensions and read_probe checking. This gives the read_probe
[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 PCM codecs and format. Corrected wav/avi/asf pcm issues.
9- added prototype ffplay program.
10- added GOB header parsing on H.263/H.263+ decoder. (Juanjo)
11- bug fix on MCBPC tables of H.263. (Juanjo)
81401c1f 12- bug fix on DC coefficients of H.263. (Juanjo)
13- added Advanced Prediction Mode on H.263/H.263+ decoder. (Juanjo)
14- now we can decode H.263 streams found on QuickTime files. (Juanjo)
15- now we can decode H.263 streams found on VIVO v1 files.(Juanjo)
16- preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
17- added GOB header for H.263/H.263+ coding on RTP mode. (Juanjo)
18- now H.263 picture size is returned on the first decoded frame. (Juanjo)
7f913a35 19- added first regression tests
739d6efa 20
21version 0.4.5:
23- some header fixes (Zdenek Kabelac <>).
24- many MMX optimizations (Nick Kurshev <>).
25- added configure system (actually a small shell script).
26- added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
27 Michael Hipp (temporary solution - waiting for integer only
28 decoder).
29- fixed VIDIOCSYNC interrupt.
30- added Intel H263 decoding support ('I263' avi fourCC)
31- added Real Video 1.0 decoding (needs further testing).
32- simplified image formats again. Added PGM format (=grey
33 pgm). Renamed old PGM to PGMYUV.
34- fixed msmpeg4 slice issues (tell me if you still find problems).
35- fixed opendivx bugs with newer versions (added VOL header decoding).
36- added support for mplayer interface.
16fbebe1 37- added macroblock skip optimization.
0c1e384c 38- added MJPEG decoder.
16fbebe1 39- added mmx/mmxext idct from libmpeg2.
40- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
41 <>).
42- added pixel format convertion layer (e.g. for MJPEG or PPM).
43- added deinterlacing option.
44- mpeg1/2 fixes.
45- mpeg4 vol header fixes (Jonathan Marsden <>).
46- ARM optimizations (Lionel Ulmer <>).
47- Windows porting of file converter.
48- added MJPEG raw format (input/ouput).
49- added JPEG image format support (input/output).
51version 0.4.4:
53- fixed some std header definitions (Bjorn Lindgren
54 <>).
55- added mpeg demux (mpeg 1 and 2 compatible).
56- added ASF demux.
57- added prototype RM demux.
58- added AC3 decoding (done with libac3 by Aaron Holtzman).
59- added decoding codec parameter guessing (.e.g. for mpeg, because the
60 header does not include them).
61- fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
62 play them (only tested video).
63- fixed h263 white bug.
64- fixed phase rounding in img resample filter.
65- add mmx code for polyphase img resample filter.
66- added CPU autodetect.
67- added generic title/author/copyright/comment string handling (ASF and RM use them).
68- added SWF demux to extract MP3 track (not usable yet because no MP3
69 decoder).
70- added fractional frame rate support.
71- codecs are no longer searched by read_header() (should fix ffserver
72 segfault).
74version 0.4.3:
76- BGR24 patch (initial patch by Jeroen Vreeken <>).
77- fixed raw yuv output.
78- added motion rounding support in MPEG4.
79- fixed motion bug rounding in MSMPEG4.
80- added B frame handling in video core.
81- added full MPEG1 decoding support.
82- added partial (frame only) MPEG2 support.
83- changed the FOURCC code for H.263 to "U263" to be able to see the
84+AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
85this +codec ;) (JuanJo).
86- Halfpel motion estimation after mb type selection (JuanJo).
87- added pgm and .Y.U.V output format.
88- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
89 output.
90- added pgmpipe I/O format (original patch from Martin Aumueller
91 <>, but changed completely since we use a format
92 instead of a protocol).
94version 0.4.2:
96- added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
97 (for openDIVX) is almost complete: 8x8 MVs and rounding are
98 missing. MSMPEG4 support is complete.
99- added prototype MPEG1 decoder. Only I and P frames handled yet (it
100 can decode ffmpeg mpegs :-)).
101- added libavcodec API documentation (see apiexample.c).
102- fixed image polyphase bug (the bottom of some images could be
103 greenish).
104- added support for non clipped motion vectors (decoding only)
105 and image sizes non multiple of 16.
106- added support for AC prediction (decoding only).
107- added file overwrite confirmation (can be disabled with -y).
108- Added custom size picture to H.263 using H.263+ (Juanjo).
110version 0.4.1:
112- added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
113 of avi and asf to DIV3.
114- added -me option to set motion estimation method
115 (default=log). suppressed redundant -hq option.
116- added options -acodec and -vcodec to force a given codec (useful for
117 AVI for example).
118- fixed -an option.
119- improved dct_quantize speed.
120- factorized some motion estimation code.
122version 0.4.0:
124- removing grab code from ffserver and moved it to ffmpeg. Added multi
125 stream support to ffmpeg.
126- added timeshifting support for live feeds (option ?date=xxx in the
127 URL).
128- added high quality image resize code with polyphase filter (need
129 mmx/see optimisation). Enable multiple image size support in ffserver.
130- added multi live feed support in ffserver.
131- suppressed master feature from ffserver (it should be done with an
132 external program which opens the .ffm url and writes it to another
133 ffserver).
134- added preliminary support for video stream parsing (wav and avi half
135 done). Added proper support for audio/video file convertion in
136 ffmpeg.
137- added preliminary support for video file sending from ffserver.
138- redesigning I/O subsystem : now using URL based input and output
139 (see avio.h).
140- added wav format support.
141- added "tty user interface" to ffmpeg to stop grabbing gracefully.
142- added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
143 (Juan J. Sierralta P. a.k.a. "Juanjo" <>).
144- added MMX DCT from mpeg2_movie 1.5 (Juanjo).
145- added new motion estimation algorithms, log and phods (Juanjo).
146- changed directories : libav for format handling, libavcodec for
147 codecs.
149version 0.3.4:
151- added stereo in mpeg audio encoder.
153version 0.3.3:
155- added 'high quality' mode which use motion vectors. It can be used in
156 real time at low resolution.
157- fixed rounding problems which caused quality problems at high
158 bitrates and large gop size.
160version 0.3.2: small fixes
162- asf fixes
163- put_seek bug fix
165version 0.3.1: added avi/divx support
167- added avi support
168- added mpeg4 codec compatible with open divx. It is based on the h263
169 codec.
170- added sound for flash format (not tested)
172version 0.3: initial public release