August 2009 - ffmpeg-devel - lists.ffmpeg.org

libavfilter-soc update and variable frame size/pixel format
by stefano.sabatini-lala＠poste.it 30 Jan '10

30 Jan '10

Hi, since r19226/19279 ffmpeg supports variable frame size/pixel formats. I managed to update libavfilter-soc, and my current solution is to simply don't support it if libavfilter is enabled. That's because those are ones of the problem lavfi should natively manage, rather than leave the problem to the application, also I don't want to spend time on this since that will be removed anyway once it will be supported by the lavfi framework. See updating patch attached, OK to apply? Regards. -- FFmpeg = Freak Faboulous Mega Philosofic Elastic Geek

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[PATCH] Bink file demuxer and audio decoder
by daniel＠drv.nu 27 Jan '10

27 Jan '10

Hi, Attached are patches to add a Bink file demuxer and Bink audio decoder, plus support for Bink audio in Smacker files. First of all, I must say that the bulk of these patches is based on the previous patch by Peter Ross [1]; many thanks to him and anyone else who helped write the documentation on MultimediaWiki. I've attempted to update the documentation where I've noticed inaccuracies, but I give no guarantees that documentation matches code. :) I've tried to fix most of the problems mentioned in the previous thread, but if I have missed anything important, please point it out. The first patch is the most problematic; it implements the required DCT and RDFT functions, but for now they are just wrappers around the (incompatibly-licensed) fft4g functions the old patch was using. Hopefully someone will step up to write replacements for these. I attempted that myself, but I am no mathematician, and I ended up with a big mess and a thoroughly muddled brain trying to implement anything based on the descriptions I could find. I have only tested the Bink-in-Smacker support with files I created myself with the latest RAD Video Tools from their website (and it does work for those - samples can be found at http://drv.nu/temp/SMK/ ); if anyone has samples of this from actual games, these would be greatly appreciated. A small note on the Smacker demuxer: it was using the SMKA tag even for u8 PCM audio; this didn't seem right, and I haven't been able to find or create a file with such an audio format, so I'm not sure it exists at all. Any samples of this would be interesting too. I've tested at least a few samples from every game I have available that uses Bink, namely: - Heroes of Might and Magic 3: The files are hidden away inside .vid archives; they are the only revision 'b' (presumably "beta"?) I could find, and this format is not playable by the RAD player; none seem to have audio, unless the headers are different, so the demuxer currently doesn't support these (a trivial one-line patch of the probe function will enable it, but there's no way to test if it's actually correct for now) - Test Drive 6 (PC version): The only example I could find among my games of files with the oldest (BIKf) non-beta revision; features a music video of Fear Factory with Gary Numan performing "Cars" :) - Diablo 2: Samples I tested all work; see note below - GTA IV: some very large samples (TV stations), notably with keyframes; I haven't listened to the entire hour and a half, but the parts I checked were fine - Various other games, all of which work: C&C: Generals, L4D, Psychonauts, COD4, UT3, ... I also tested the samples at http://samples.mplayerhq.hu/game-formats/bink/ : - ATI/* has various chunks of files; appending the --append.this.to.complete.bik to the end of the un-suffixed file produces the full video, which works; the .x file is just another truncated part of the video - thps4/data002.tgr seems to be the only file in that dir that has audio, and it works - diablo2/d2xmusic.mpq does not contain any Bink files, but D2VIDEO.MPQ from the Cinematics CD does contain Bink files, and these work, as do the ones from the expansion - ActivisionLogo.bik, AnivisionLogo.bik, logo_collective.bik, logo_lucas.bik, original.bik: all work - logo_legal.bik: does not contain any audio Any samples that don't work (or reports of ones that actually work :), as well as any critiques on the patch, are quite welcome. Thanks, -- Daniel Verkamp [1] http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2008-April/045346.html

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[PATCH] Document url_open()
by stefano.sabatini-lala＠poste.it 24 Jan '10

24 Jan '10

As in subject. -- FFmpeg = Frenzy & Foolish Magic Puristic Excellent Generator

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[PATCH] Document url_open_protocol()
by stefano.sabatini-lala＠poste.it 24 Jan '10

24 Jan '10

Hi, as in subject. -- FFmpeg = Frightening and Forgiving Mean Pacific Erotic Guru

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[RFC] rename ffpresets directory to presets
by baptiste.coudurier＠gmail.com 24 Jan '10

24 Jan '10

Hi guys, Anybody against it ? -- Baptiste COUDURIER GnuPG Key Id: 0x5C1ABAAA Key fingerprint 8D77134D20CC9220201FC5DB0AC9325C5C1ABAAA FFmpeg maintainer http://www.ffmpeg.org

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What is missing for working AVFMT_FLAG_NONBLOCK?
by michaelni＠gmx.at 18 Jan '10

18 Jan '10

Hi AVFMT_FLAG_NONBLOCK is not enabled in ffmpeg/ffplay.c what is missing for it? capturing from several devices is likely going to work better if they dont block. And yes i know it all should be using select() but that is harder. And simple polling with non blocking demuxers should already work pretty well. is the only thing missing the code in ffmpeg.c that picks files based on the next expected timestamp? id like to set AVFMT_FLAG_NONBLOCK by default in ffmpeg.c -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Asymptotically faster algorithms should always be preferred if you have asymptotical amounts of data

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[PATCH] swscale-example: Implement get_stride() helper function.
by ramiro.polla＠gmail.com 17 Jan '10

17 Jan '10

$subj

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yuv2rgb_template.c uses MOVNTQ but not SFENCE?
by Reimar.Doeffinger＠stud.uni-karlsruhe.de 12 Jan '10

12 Jan '10

Can someone comment if this is right? It seems like a bug according to the documentation I have... Greetings, Reimar D?ffinger

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[RFC] H.264/SQV3 separation: h264data.h
by diego＠biurrun.de 11 Jan '10

11 Jan '10

Next up on the list is moving the tables in h264data.h to a .c file that can be compiled and shared by the H.264 and SVQ3 decoder. This requires adding an ff_ prefix to the names of the tables, removing the static keyword and then moving h264data.h to h264data.c while replacing the contents of h264data.h with appropriate extern declarations. I have done this in my local tree, but the patch is 174kB big (and terribly boring), so I'm not sending it here. OK to proceed (in several steps)? Will this need to be benchmarked at some point? Diego

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[PATCH] Function to parse Dirac sequence header
by lessen42＠gmail.com 11 Jan '10

11 Jan '10

Hi, This will be useful for both the dirac parser and ogg demuxer (and future native dirac decoder of course.) Adapted from the soc repository.

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