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Thread: FFmpeg Picks Up Support For New Formats

  1. #1
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    Default FFmpeg Picks Up Support For New Formats

    Phoronix: FFmpeg Picks Up Support For New Formats

    While there still is no official release of FFmpeg, committed to their SVN repository last night was support for several new formats. FFmpeg has picked up a QCELP/PureVoice speech decoder, floating point PCM decoder and encoder, Nellymoser ASAO encoder, Electronic Arts TGQ decoder, Speex decoding via libspeex, MXF muxer, E-AC-3 support, and a RealVideo 4.0 decoder. FFmpeg is a popular open-source project that supports audio/video encoding and decoding with numerous codecs...

    http://www.phoronix.com/vr.php?view=NjkwMg

  2. #2
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    very interesting news. I hope ubuntu 9.4 will update its ffmpeg package to a newer svn revision.
    Last edited by bulletxt; 12-04-2008 at 10:59 AM.

  3. #3
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    I wish they could support the intel Indeo 5 video codec, a considerable number of old videos around are coded that way, as it was once default on Windows.

  4. #4
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    What happened to the efforts for generic frame-level multithreading support? It was a Google SOC project and as far as I know it's quite finished.

  5. #5
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    Is Real Video 4.0 the latest Real codec?

  6. #6
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    Quote Originally Posted by Louise View Post
    Is Real Video 4.0 the latest Real codec?
    As far as I can tell, yes it is:
    http://en.wikipedia.org/wiki/Real_Video#Codecs

    This is pretty exciting news, as rv40 was one of the few remaining codecs people use binary .dll's for.

  7. #7
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    This is even better than I thought

  8. #8
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    Quote Originally Posted by Louise View Post
    This is even better than I thought
    Just so you know, Real Video 3.0 isn't finished yet- so if you have those format videos, it's going to be a little longer.

  9. #9
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    Default A few notes

    Michael: it's unlikely there will be a formal release, so it's better to just treat it like versions of Wine: every version is (or should be) better than the previous one (and if it's not, that's a bug).

    The frame-level multithreading is progressing slowly- it's in a seperate branch- ffmpeg-mt (accessible here: http://gitorious.org/projects/ffmpeg/repos/ffmpeg-mt)
    From the experiences of people who have tried it, and used it in their programs, 2 cores gets a decent bump up, but 4 cores is where it gets really good performance. This test: http://forum.doom9.org/showthread.ph...39#post1214539 shows about a 300% gain over plain FFmpeg.

    Bulletx: Sadly, your best bet now (and for the forseeable future) will be to build your own (or possibly get them from debian-multimedia.org) There's a great guide on the Ubuntu forums on how to build FFmpeg & x264 from source.

  10. #10
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    ffmpeg is getting better, but for me it is still not good enough to watch h264 ts for example using kaffeine. It works for some frames, then the errors come and artefacts. In bad cases the codec fails completely - with too many bad bits.

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