October 2006 - ffmpeg-devel - lists.ffmpeg.org

[PATCH] Update Copyright years
by ismail＠pardus.org.tr 01 Oct '06

01 Oct '06

Hi, We talked about this before. Attached patch updates Copyright year to 2006 and add "et al." so that its clear that Fabrice is not the only author. I am CC'ing Fabrice in case he wants to object or something. Regards, ismail -- Insert some japanese signature here

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[PATCH] qpel approximation
by lorenm＠u.washington.edu 01 Oct '06

01 Oct '06

This patch adds approximate bilinear qpel mc functions, enabled for B-frames only, with -lavdopts fast. Comments: does it look ok? should it have a separate option? 16x16 mc costs, averaged over all subpel positions: mpeg4 qpel: 1443 cycles h264 qpel: 1148 cycles bilinear qpel: 174 cycles mpeg4 hpel: 99 cycles total speedup: ~12% in mpeg4, ~5% in h264. --Loren Merritt

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[PATCH] AVISynth support for some MS DIB formats
by slhomme＠divxcorp.com 01 Oct '06

01 Oct '06

Some codec don't get decoded to some nice YUV formats in AVISynth. They use different DIB formats as explained here: http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/dx81_c/dir… Here is a patch to correct this in the AVISynth code. Steve

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inlining failed and other problems in building
by dhudes＠hudes.org 01 Oct '06

01 Oct '06

I'm on a PIII running SUSE Linux 9.0. output of gcc -v Reading specs from /usr/lib/gcc-lib/i586-suse-linux/3.3.1/specs Configured with: ../configure --enable-threads=posix --prefix=/usr --with-local-prefix=/usr/local --infodir=/usr/share/info --mandir=/usr/share/man --libdir=/us r/lib --enable-languages=c,c++,f77,objc,java,ada --disable-checking --enable-libgcj --with-gxx-include-dir=/usr/include/g++ --with-slibdir=/lib --with-system-zlib --enable-shared --enable-__cxa_atexit i586-suse-linux Thread model: posix gcc version 3.3.1 (SuSE Linux) ffmpeg fails to build. I'm doing a straightforward ./configure of the svn head as of this morning.

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[PATCH] fix build with --disable-encoders
by astrange＠ithinksw.com 01 Oct '06

01 Oct '06

dv.c fails to compile because one function isn't hidden when encoders are disabled. The attached patch corrects it. PS that -Wdisabled-optimization sure makes a lot of warnings on Darwin.

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[PATCH] ASF Duration
by bbrice＠newtek.com 01 Oct '06

01 Oct '06

Hello. I've found that encoding with the ASF output format always gave a duration that was off by 2 seconds. For example, I transcode 30 seconds worth to an ASF file, and the result file has a reported duration of 28.5 seconds. The duration written in the ASF header does not take into account the preroll of 2 seconds. To find the duration of an ASF clip, the play duration has the preroll subtracted from it. In this case, it would always be off by 2 seconds. This patch takes the preroll into account. Thanks! pollux:~> ./ffmpeg -i INPUT.avi -t 00:00:30 OUTPUT.asf FFmpeg version SVN-r6197, Copyright (c) 2000-2004 Fabrice Bellard libavutil version: 49.0.0 libavcodec version: 51.13.0 libavformat version: 50.5.0 built on Sep 29 2006 14:22:51, gcc: 3.4.2 (mingw-special) Input #0, avi, from 'INPUT.avi': Duration: 00:03:50.8, start: 0.000000, bitrate: 657 kb/s Stream #0.0: Video: mpeg4, yuv420p, 352x240, 29.98 fps(r) Stream #0.1: Audio: mp3, 32000 Hz, stereo, 96 kb/s Output #0, asf, to 'OUTPUT.asf': Stream #0.0: Video: msmpeg4, yuv420p, 352x240, q=2-31, 200 kb/s, 29.98 fps(c) Stream #0.1: Audio: mp3, 32000 Hz, stereo, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 [msmpeg4 @ 00721000]warning, clipping 1 dct coefficients to -127..127 video:853kB audio:239kB global headers:0kB muxing overhead -99.950162% pollux:~> ./ffmpeg -i OUTPUT.asf FFmpeg version SVN-r6197, Copyright (c) 2000-2004 Fabrice Bellard libavutil version: 49.0.0 libavcodec version: 51.13.0 libavformat version: 50.5.0 built on Sep 29 2006 14:22:51, gcc: 3.4.2 (mingw-special) Seems that stream 0 comes from film source: 1000.00 (1000/1) -> 29.97 (30000/1001) Input #0, asf, from 'OUTPUT.asf': Duration: 00:00:28.5, start: 2.000000, bitrate: 303 kb/s Stream #0.0: Video: msmpeg4, yuv420p, 352x240, 29.97 fps(r) Stream #0.1: Audio: mp3, 32000 Hz, stereo, 64 kb/s Must supply at least one output file -- Brian Brice

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[PATCH] last move of functions in vorbis.c to vorbis.h
by ods15＠ods15.dyndns.org 01 Oct '06

01 Oct '06

last patch necessary for all shared functions (that I noticed). One unfortunate thing is I had to remove some debugging printfs from the floor function. render_line() is called quite a bit and during decode, so I made it static inline in vorbis.h, gcc refuses to inline it though. Any objections to commit? - ods15

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[PATCH] vorbis.h -> vorbis_data.c
by ods15＠ods15.dyndns.org 01 Oct '06

01 Oct '06

It would be silly for me to send this as a patch, because it's an almost completely unreadable ~260kb patch. These are the changes to be made: 1. the attached patch, for Makefile and vorbis.c 2. vorbis.h would be changed to what is attached below 3. vorbis_data.c would be svn-cp'ed from vorbis.h, having the struct/typedefs removed, and a single line added: const float * ff_vorbis_vwin[8] = { vwin64, vwin128, vwin256, vwin512, vwin1024, vwin2048, vwin4096, vwin8192 }; I'll commit tommorrow, this is first step for me making vorbis_enc clean enough to commit to lavc... - ods15

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[PATCH] move ready_floor1 to vorbis.h , change some sruct internals in vorbis.c
by ods15＠ods15.dyndns.org 01 Oct '06

01 Oct '06

first step to make functions common between vorbis.c and vorbis_enc.c . OK to commit? BTW, the floor calculation in vorbis.c is inlined (render_line) right in the floor decode function, so it would be somewhat harder for me to split that out... All of the common functions I am putting in vorbis.h . They are mostly small, biggest of them is this one, maybe the codebook len2vlc . So I don't think they deserve a seperate file... - ods15

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