February 2007 - ffmpeg-devel - lists.ffmpeg.org

[FWD] [PATCH] immediate decoding of dvd stills
by nicola_sabbi＠fastwebnet.it 24 Jun '11

24 Jun '11

Some time ago someone posted this small patch to permit decoding dvd still images without setting LOW_DELAY; unfortunately it seems the patch was forgotten Is it ok to commit? If not, what's the right way to proceed?

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[PATCH] Apple Video Encoder (rpza)
by ffmpeg.php＠gmail.com 24 Jan '11

24 Jan '11

Attached is a patch to add support for Apple Video encoding (rpza). The quality settings are defined at compile time right now since I wasn't really sure how to map ffmpeg's numerous video options to the capabilities of rpza. It supports all rpza encoding opcodes but the 4-color block encoding doesn't try to do multiblock runs yet. -Todd

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[PATCH] GSM-MS decoder and encoder
by mbardiaux＠mediaxim.be 01 Feb '10

01 Feb '10

-- Michel Bardiaux R&D Director T +32 [0] 2 790 29 41 F +32 [0] 2 790 29 02 E mailto:mbardiaux at mediaxim.be Mediaxim NV/SA Vorstlaan 191 Boulevard du Souverain Brussel 1160 Bruxelles http://www.mediaxim.com/

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compressed v4l2 images
by ramiro＠lisha.ufsc.br 10 Dec '09

10 Dec '09

Hello, I have a webcam running the zc0301 driver. On the VIDIOC_S_FMT ioctl call, it always sets the pixel format to V4L2_PIX_FMT_JPEG. The current code doesn't take into account when the pixel format is changed on that call. Also, it doesn't support the compressed JPEG stream even if the pixel format is changed according to the result of the ioctl. What's the best way to make it support compressed JPEG? Just check for compressed and set appropriate codec_id? Ramiro Polla

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Duplicate options
by roine＠users.sourceforge.net 08 Aug '08

08 Aug '08

ffmpeg lists some options twice in the help: -threads -strict -dc -qdiff -rc_eq -aspect The subtitle options are also both in the Main section and the Subtitle section: -scodec -slang -newsubtitle It seems the duplication is due to some options being in ffmpeg.c and some in libavcodec/utils.c. I don't really understand the difference (so no patch from me), but my guess is they should be removed from ffmpeg.c. Roine

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[PATCH] Vorbis I floor type 0 support
by eclipse7＠gmx.net 16 Mar '08

16 Mar '08

Hi, i extended the ffmpeg vorbis decoder to decode vorbis floor0 files. It is my first try at this kind of stuff. I only had one sample tho testing wasn't too exhaustive. I tested the code on linux x86 and Solaris SPARC so far. As always comments and testers welcome. Have fun, Alex (beastd)

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libnut demuxer/muxer broken with h264 at last
by lu_zero＠gentoo.org 04 Nov '07

04 Nov '07

How to reproduce: build ffmpeg with x264 and libnut support ffmpeg -i file -acodec mp3 -vcodec h264 out.nut the resulting file is unseekable and ffplay will hang on the end. the same file could be seeked correctly by mplayer+libnut but the mp3 track couldn't be found as is while ffnut decodes the track correctly. lu -- Luca Barbato Gentoo/linux Gentoo/PPC http://dev.gentoo.org/~lu_zero

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FFmpeg: H.264 decoding issue
by rnissl＠gmx.de 04 Nov '07

04 Nov '07

Hi, I've uploaded a H.264 sample file which isn't decoded properly. The file seems to be OK as it can be properly decoded on Windows using Cyberlink's HD264Pack. I'm not shure whether the file really uses PAFF interlacing as mentioned below. The chosen folder was: h264-issue This is the file description (luxe-hd.es.h264.txt): luxe-hd.es.h264 is the head of an ES stream, taken from a VDR recording. The channel Luxe-HD is broadcast via Hotbird 13.0 E. Playing this file with MPlayer-1.0rc1 gives a lot of errors (omitted here). Playing it in xine (through vdr-xine) asserts in mpegvideo.c (omitted here as it requires a patched xine). The command line for mplayer was: mplayer -demuxer h264es -vc ffh264 /video/luxe-hd.es.h264 The command line for ffplay was: ffplay /video/luxe-hd.es.h264 The output of ffplay was: [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]concealing 2720 DC, 2720 AC, 2720 MV errors [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]PAFF interlacing is not implemented [h264 @ 0x84cd0a0]illegal short term buffer state detected [h264 @ 0x84cd0a0]concealing 2720 DC, 2720 AC, 2720 MV errors Xlib: unexpected async reply (sequence 0x70)! Segmentation fault ffplay is part of this build: video:~ # ffmpeg -version FFmpeg version SVN-r7884, Copyright (c) 2000-2006 Fabrice Bellard, et al. configuration: --prefix=/soft/ffmpeg-svn libavutil version: 49.3.0 libavcodec version: 51.32.0 libavformat version: 51.8.0 built on Feb 8 2007 22:36:34, gcc: 4.1.2 20061115 (prerelease) (SUSE Linux) ffmpeg SVN-r7884 libavutil 3212032 libavcodec 3350528 libavformat 3344384 Bye. -- Dipl.-Inform. (FH) Reinhard Nissl mailto:rnissl at gmx.de

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[PATCH] configure - simplify
by ramiro＠lisha.ufsc.br 21 Sep '07

21 Sep '07

Hello, libogg.diff simplifies the check for libogg for libvorbis and libtheora. else.diff changes occurences of "if;then <1 line> else <1 line> fi" to && and || While echoing to config.mak and $TMPH, some ifs indent 2 and others indent 4. Which one is preferred? Ramiro Polla

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[RFC/Patch] native mms code...
by rdm4＠martellventures.com 02 Aug '07

02 Aug '07

Hi-- Attached is a native mms implementation. I did this from the ground up working off the specification, with the exception of borrowing the packet output debug routine from libmms, which I will probably remove before final submission. (I was using the libmms debug output stuff against my stuff to find my bugs) This is a rough draft only; I'm sort of interested in what people think about this method of implementation. Things I know about: 1) fprintfs must go 2) there may be trailing whitespace, etc. Key questions: 1) is the interface to asf.[ch] satisfactory? 2) Using a URLProtocol instead was an option, but it doesn't support streaming by timestamp. So instead I mirrored rtp stuff. 3) How can I get the local ip and port from a url_XXX tcp connection? It doesn't seem currently available in. Is this correct? 4) MMS has parameters for the tcp connection bitrate; and if there are multiple encodings in the file, it will choose the best ones. I am currently only streaming the first audio and first video stream. How would i get the bandwidth input from the user? I know we don't want to add new AVOptions that aren't globally useful. Also, I could ask for audio only in this manor. Thanks! -Ryan

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