H264 in an MPEG-2 wrapper

Discussion in 'Amateur Video Production' started by kh240463, Jun 12, 2007.

  1. kh240463

    kh240463 Guest

    Hi folks,
    I've been given several video files that need to be streamed via our
    server (MPEG4IP). The software correctly decodes the audio stream, but
    it can't decode the video stream correctly.

    I took a look at the file using GSpot and discovered it's an MPEG-2
    container storing H.264 video and an MPEG-1 Layer 2 audio stream -
    it's the first time I have encountered anyone encoding H.264 in this
    manner. Most of our existing files are H.264 in an MP4 wrapper.

    Can anyone offer some advice on the best method of handling these
    files? Is there anything I can download for MPEG4IP or some other
    streaming application that will allow me to decode the video portion,
    or will I need to convert the files to some other format. If the
    latter, can anyone recommend some decent software for the task?

    Cheers,
    Gaz
     
    kh240463, Jun 12, 2007
    #1
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  2. kh240463

    Frank Guest

    On Tue, 12 Jun 2007 03:03:57 -0700, in 'rec.video.desktop',
    I'm surprised that it could handle one and not the other.
    I believe that an MPEG-2 wrapper, specifically a TS (Transport Stream)
    wrapper, is/will be the common method of delivering H.264 video
    streams over cable television networks and satellite television
    systems.
    I haven't played with MPEG4IP in ages and don't have time right now to
    perform any tests for you, but I'm wondering whether the VideoLAN VLC
    media player program will successfully play these files.

    http://www.videolan.org/vlc/
    Good luck!
     
    Frank, Jun 12, 2007
    #2
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  3. kh240463

    kh240463 Guest

    Hi Frank,
    Thanks for the quick response. I'm glad to see that it isn't simply a
    weird format that we've been given. I share your surprise that it is
    able to decode one, but not the other. It can support H.264 when
    stored in MPEG-4 without any problems. Sadly, VLC also has problems
    with the video output.
     
    kh240463, Jun 12, 2007
    #3
  4. kh240463

    Frank Guest

    H264 in an MPEG-2 wrapper>,
    You're very welcome.
    Well, it might be, such as a Profile/Level that neither MPEG4IP nor
    VLC media player can handle.
    The fact that MPEG4IP could correctly process the audio stream
    implies, at least to me, that it (MPEG4IP, that is), understands the
    wrapper.
    Right, as it should, but again, does it really support all profiles
    and levels.
    I wonder if you're facing an essence problem.

    You should contact the source of the material and see what they have
    to say with regard to the processes used to create the files.

     
    Frank, Jun 12, 2007
    #4
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