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[libav.git] / Changelog
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1version 0.4.6:
2
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
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9version 0.4.5:
10
11- some header fixes (Zdenek Kabelac <kabi@informatics.muni.cz>).
12- many MMX optimizations (Nick Kurshev <nickols_k@mail.ru>).
13- added configure system (actually a small shell script).
14- added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
15 Michael Hipp (temporary solution - waiting for integer only
16 decoder).
17- fixed VIDIOCSYNC interrupt.
18- added Intel H263 decoding support ('I263' avi fourCC)
19- added Real Video 1.0 decoding (needs further testing).
20- simplified image formats again. Added PGM format (=grey
21 pgm). Renamed old PGM to PGMYUV.
22- fixed msmpeg4 slice issues (tell me if you still find problems).
23- fixed opendivx bugs with newer versions (added VOL header decoding).
24- added support for mplayer interface.
16fbebe1 25- added macroblock skip optimization.
0c1e384c 26- added MJPEG decoder.
16fbebe1 27- added mmx/mmxext idct from libmpeg2.
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28- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
29 <celer@shell.scrypt.net>).
30- added pixel format convertion layer (e.g. for MJPEG or PPM).
31- added deinterlacing option.
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32- mpeg1/2 fixes.
33- mpeg4 vol header fixes (Jonathan Marsden <snmjbm@pacbell.net>).
34- ARM optimizations (Lionel Ulmer <lionel.ulmer@free.fr>).
35- Windows porting of file converter.
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36- added MJPEG raw format (input/ouput).
37- added JPEG image format support (input/output).
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38
39version 0.4.4:
40
41- fixed some std header definitions (Bjorn Lindgren
42 <bjorn.e.lindgren@telia.com>).
43- added mpeg demux (mpeg 1 and 2 compatible).
44- added ASF demux.
45- added prototype RM demux.
46- added AC3 decoding (done with libac3 by Aaron Holtzman).
47- added decoding codec parameter guessing (.e.g. for mpeg, because the
48 header does not include them).
49- fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
50 play them (only tested video).
51- fixed h263 white bug.
52- fixed phase rounding in img resample filter.
53- add mmx code for polyphase img resample filter.
54- added CPU autodetect.
55- added generic title/author/copyright/comment string handling (ASF and RM use them).
56- added SWF demux to extract MP3 track (not usable yet because no MP3
57 decoder).
58- added fractional frame rate support.
59- codecs are no longer searched by read_header() (should fix ffserver
60 segfault).
61
62version 0.4.3:
63
64- BGR24 patch (initial patch by Jeroen Vreeken <pe1rxq@amsat.org>).
65- fixed raw yuv output.
66- added motion rounding support in MPEG4.
67- fixed motion bug rounding in MSMPEG4.
68- added B frame handling in video core.
69- added full MPEG1 decoding support.
70- added partial (frame only) MPEG2 support.
71- changed the FOURCC code for H.263 to "U263" to be able to see the
72+AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
73this +codec ;) (JuanJo).
74- Halfpel motion estimation after mb type selection (JuanJo).
75- added pgm and .Y.U.V output format.
76- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
77 output.
78- added pgmpipe I/O format (original patch from Martin Aumueller
79 <lists@reserv.at>, but changed completely since we use a format
80 instead of a protocol).
81
82version 0.4.2:
83
84- added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
85 (for openDIVX) is almost complete: 8x8 MVs and rounding are
86 missing. MSMPEG4 support is complete.
87- added prototype MPEG1 decoder. Only I and P frames handled yet (it
88 can decode ffmpeg mpegs :-)).
89- added libavcodec API documentation (see apiexample.c).
90- fixed image polyphase bug (the bottom of some images could be
91 greenish).
92- added support for non clipped motion vectors (decoding only)
93 and image sizes non multiple of 16.
94- added support for AC prediction (decoding only).
95- added file overwrite confirmation (can be disabled with -y).
96- Added custom size picture to H.263 using H.263+ (Juanjo).
97
98version 0.4.1:
99
100- added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
101 of avi and asf to DIV3.
102- added -me option to set motion estimation method
103 (default=log). suppressed redundant -hq option.
104- added options -acodec and -vcodec to force a given codec (useful for
105 AVI for example).
106- fixed -an option.
107- improved dct_quantize speed.
108- factorized some motion estimation code.
109
110version 0.4.0:
111
112- removing grab code from ffserver and moved it to ffmpeg. Added multi
113 stream support to ffmpeg.
114- added timeshifting support for live feeds (option ?date=xxx in the
115 URL).
116- added high quality image resize code with polyphase filter (need
117 mmx/see optimisation). Enable multiple image size support in ffserver.
118- added multi live feed support in ffserver.
119- suppressed master feature from ffserver (it should be done with an
120 external program which opens the .ffm url and writes it to another
121 ffserver).
122- added preliminary support for video stream parsing (wav and avi half
123 done). Added proper support for audio/video file convertion in
124 ffmpeg.
125- added preliminary support for video file sending from ffserver.
126- redesigning I/O subsystem : now using URL based input and output
127 (see avio.h).
128- added wav format support.
129- added "tty user interface" to ffmpeg to stop grabbing gracefully.
130- added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
131 (Juan J. Sierralta P. a.k.a. "Juanjo" <juanjo@atmlab.utfsm.cl>).
132- added MMX DCT from mpeg2_movie 1.5 (Juanjo).
133- added new motion estimation algorithms, log and phods (Juanjo).
134- changed directories : libav for format handling, libavcodec for
135 codecs.
136
137version 0.3.4:
138
139- added stereo in mpeg audio encoder.
140
141version 0.3.3:
142
143- added 'high quality' mode which use motion vectors. It can be used in
144 real time at low resolution.
145- fixed rounding problems which caused quality problems at high
146 bitrates and large gop size.
147
148version 0.3.2: small fixes
149
150- asf fixes
151- put_seek bug fix
152
153version 0.3.1: added avi/divx support
154
155- added avi support
156- added mpeg4 codec compatible with open divx. It is based on the h263
157 codec.
158- added sound for flash format (not tested)
159
160version 0.3: initial public release