MKV files stuttering with VLC

Discussion in 'MacBook Pro' started by lapino, Apr 2, 2009.

  1. lapino macrumors regular

    Joined:
    Mar 6, 2009
    #1
    I thought my MBP should be able to copy with MKV files, but when I try to play some 1080p movie rips on my MBP, the video stutters quite a bit. Anything I can do about this?
     
  2. Cave Man macrumors 604

    Cave Man

    #2
    1. Use better software (Plex).
    2. Use a lower bit rate file.
    3. Use a 720p file.

    Personally, I'd go with #1. ;)
     
  3. Consultant macrumors G5

    Consultant

    Joined:
    Jun 27, 2007
    #3
    Some 1080p content are poorly encoded.

    FYI, 720p looks virtually the same unless you are paying attention to image detail instead of the story.
     
  4. snowmoon macrumors 6502a

    snowmoon

    Joined:
    Oct 6, 2005
    Location:
    Albany, NY
    #4
    Since VLC uses 100% CPU driven decoding it's not surprising that you might get stutter. For a full 50mbps h264 decode you need dual 3ghz+ last I checked.

    If there is something to allow quicktime to playback mkv's you will have less stuttering since it can do GPU offloading.
     
  5. isaki87 macrumors regular

    Joined:
    Oct 26, 2008
    Location:
    Santa Monica, CA
    #5

    Perian works like a charm. Its a Quicktime preference pane that allows it to play multiple formats, such as avi, mkv, flv, divx, and others.


    http://perian.org/#detail
     
  6. RKpro macrumors 6502

    Joined:
    Oct 27, 2008
    #6
    The trouble is, VLC is 100% CPU dependant, but it only uses 50% of your CPU's capability. It only uses one core, so in Activity monitor you can see it using up 50% of the CPU and the video stuttering like hell. Hopefully this can be addressed once Snow Leopard is released, and a new version of VLC either uses Grand Central for Dual Core support, or better yet GPU acceleration.

    CoreAVC is a very good decoder for windows, with my old 1.8GHz laptop I was able to play 1080P flawlessly, but they have no intentions to make a mac version :(.
     

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