updated
[libav.git] / Changelog
1 version 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 - 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)
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)
19 - added first regression tests
20 - added MPEG2 TS demux
21 - new demux API for libav
22
23 version 0.4.5:
24
25 - some header fixes (Zdenek Kabelac <kabi@informatics.muni.cz>).
26 - many MMX optimizations (Nick Kurshev <nickols_k@mail.ru>).
27 - added configure system (actually a small shell script).
28 - added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
29 Michael Hipp (temporary solution - waiting for integer only
30 decoder).
31 - fixed VIDIOCSYNC interrupt.
32 - added Intel H263 decoding support ('I263' avi fourCC)
33 - added Real Video 1.0 decoding (needs further testing).
34 - simplified image formats again. Added PGM format (=grey
35 pgm). Renamed old PGM to PGMYUV.
36 - fixed msmpeg4 slice issues (tell me if you still find problems).
37 - fixed opendivx bugs with newer versions (added VOL header decoding).
38 - added support for mplayer interface.
39 - added macroblock skip optimization.
40 - added MJPEG decoder.
41 - added mmx/mmxext idct from libmpeg2.
42 - added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
43 <celer@shell.scrypt.net>).
44 - added pixel format convertion layer (e.g. for MJPEG or PPM).
45 - added deinterlacing option.
46 - mpeg1/2 fixes.
47 - mpeg4 vol header fixes (Jonathan Marsden <snmjbm@pacbell.net>).
48 - ARM optimizations (Lionel Ulmer <lionel.ulmer@free.fr>).
49 - Windows porting of file converter.
50 - added MJPEG raw format (input/ouput).
51 - added JPEG image format support (input/output).
52
53 version 0.4.4:
54
55 - fixed some std header definitions (Bjorn Lindgren
56 <bjorn.e.lindgren@telia.com>).
57 - added mpeg demux (mpeg 1 and 2 compatible).
58 - added ASF demux.
59 - added prototype RM demux.
60 - added AC3 decoding (done with libac3 by Aaron Holtzman).
61 - added decoding codec parameter guessing (.e.g. for mpeg, because the
62 header does not include them).
63 - fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
64 play them (only tested video).
65 - fixed h263 white bug.
66 - fixed phase rounding in img resample filter.
67 - add mmx code for polyphase img resample filter.
68 - added CPU autodetect.
69 - added generic title/author/copyright/comment string handling (ASF and RM use them).
70 - added SWF demux to extract MP3 track (not usable yet because no MP3
71 decoder).
72 - added fractional frame rate support.
73 - codecs are no longer searched by read_header() (should fix ffserver
74 segfault).
75
76 version 0.4.3:
77
78 - BGR24 patch (initial patch by Jeroen Vreeken <pe1rxq@amsat.org>).
79 - fixed raw yuv output.
80 - added motion rounding support in MPEG4.
81 - fixed motion bug rounding in MSMPEG4.
82 - added B frame handling in video core.
83 - added full MPEG1 decoding support.
84 - added partial (frame only) MPEG2 support.
85 - changed the FOURCC code for H.263 to "U263" to be able to see the
86 +AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
87 this +codec ;) (JuanJo).
88 - Halfpel motion estimation after mb type selection (JuanJo).
89 - added pgm and .Y.U.V output format.
90 - suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
91 output.
92 - added pgmpipe I/O format (original patch from Martin Aumueller
93 <lists@reserv.at>, but changed completely since we use a format
94 instead of a protocol).
95
96 version 0.4.2:
97
98 - added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
99 (for openDIVX) is almost complete: 8x8 MVs and rounding are
100 missing. MSMPEG4 support is complete.
101 - added prototype MPEG1 decoder. Only I and P frames handled yet (it
102 can decode ffmpeg mpegs :-)).
103 - added libavcodec API documentation (see apiexample.c).
104 - fixed image polyphase bug (the bottom of some images could be
105 greenish).
106 - added support for non clipped motion vectors (decoding only)
107 and image sizes non multiple of 16.
108 - added support for AC prediction (decoding only).
109 - added file overwrite confirmation (can be disabled with -y).
110 - Added custom size picture to H.263 using H.263+ (Juanjo).
111
112 version 0.4.1:
113
114 - added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
115 of avi and asf to DIV3.
116 - added -me option to set motion estimation method
117 (default=log). suppressed redundant -hq option.
118 - added options -acodec and -vcodec to force a given codec (useful for
119 AVI for example).
120 - fixed -an option.
121 - improved dct_quantize speed.
122 - factorized some motion estimation code.
123
124 version 0.4.0:
125
126 - removing grab code from ffserver and moved it to ffmpeg. Added multi
127 stream support to ffmpeg.
128 - added timeshifting support for live feeds (option ?date=xxx in the
129 URL).
130 - added high quality image resize code with polyphase filter (need
131 mmx/see optimisation). Enable multiple image size support in ffserver.
132 - added multi live feed support in ffserver.
133 - suppressed master feature from ffserver (it should be done with an
134 external program which opens the .ffm url and writes it to another
135 ffserver).
136 - added preliminary support for video stream parsing (wav and avi half
137 done). Added proper support for audio/video file convertion in
138 ffmpeg.
139 - added preliminary support for video file sending from ffserver.
140 - redesigning I/O subsystem : now using URL based input and output
141 (see avio.h).
142 - added wav format support.
143 - added "tty user interface" to ffmpeg to stop grabbing gracefully.
144 - added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
145 (Juan J. Sierralta P. a.k.a. "Juanjo" <juanjo@atmlab.utfsm.cl>).
146 - added MMX DCT from mpeg2_movie 1.5 (Juanjo).
147 - added new motion estimation algorithms, log and phods (Juanjo).
148 - changed directories : libav for format handling, libavcodec for
149 codecs.
150
151 version 0.3.4:
152
153 - added stereo in mpeg audio encoder.
154
155 version 0.3.3:
156
157 - added 'high quality' mode which use motion vectors. It can be used in
158 real time at low resolution.
159 - fixed rounding problems which caused quality problems at high
160 bitrates and large gop size.
161
162 version 0.3.2: small fixes
163
164 - asf fixes
165 - put_seek bug fix
166
167 version 0.3.1: added avi/divx support
168
169 - added avi support
170 - added mpeg4 codec compatible with open divx. It is based on the h263
171 codec.
172 - added sound for flash format (not tested)
173
174 version 0.3: initial public release