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Thread: HD Video Stutter Issues

  1. #1
    Join Date
    Nov 2007
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    297
    Distro
    Ubuntu 12.04 Precise Pangolin

    HD Video Stutter Issues

    Hello all.

    I've seen numerous posts regarding this issue, but none of the proposed solutions (e.g. changing VLC output to OpenGL or disabling compiz) work.

    I'm running an up-to-date Ubuntu 10.04 installation, with proprietary ATI drivers for a Radeon HD 5850 (XFX Black edition, overclocked). I also have a dual core Intel E8500 processor. I dual-boot with Windows 7 for games and, until now, blurays (which play wonderfully well). I recently discovered makemkv, and have been experimenting playing my blurays in Linux. However, neither VLC or Totem will play the HD content to my satisfaction (i.e. video stutters horribly while the audio is fine). Makemkv creates a .mkv file (as you probably guessed). I don't know much about this format, but Ubuntu gives me the following details:

    Video:
    Dimensions: 1920 x 1080
    Codec: H264
    Framerate: 24 frames per second
    Bitrate: N/A

    Audio:
    Codec: Dolby Digital (AC-3)
    Channels: Surround 5.1
    Sample rate: 48000 Hz
    Bitrate: 640 kbps


    As I said, playing this bluray works great in Windows, so I'm certain my hardware is good enough. Why can't I get this to play well in Linux? Is it a driver issue? Codec issue? Should I use ffmpeg and convert this file to something else in which VLC on Linux would rejoice? VLC in Windows plays this .mkv file perfectly.

    Thanks for your help; this really isn't my strong suit.
    Last edited by Beacon11; August 13th, 2011 at 04:17 PM.

  2. #2
    Join Date
    Nov 2007
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    297
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: HD Video Stutter Issues

    Bump-- does no one else have these issues? Are the ATI drivers lacking sufficient hardware acceleration?

  3. #3
    Join Date
    Feb 2009
    Location
    Dallas, TX
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    6,782
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: HD Video Stutter Issues

    In order to use video hardware acceleration on an ATI card you need to install an additional library (besides the proprietary driver).

    Although, I don't know the exact details, I'm going to try to point you in the right direction.

    You need the VA API library for your card (usually referred as vaapi or libva). I don't know the exact name of the ATI package. For Nvidia cards it is called vdpau-va-driver.

    In my understanding 10.04 it is not ready 'as is' to use vaapi. Its VLC version doesn't include support for vaapi, and the vaapi library is not even available. If you were using 11.04 neither of that would be a problem.

    If you want to stay in 10.04, it may be some options. There are ppa's to update you to the latest Xorg framework, ppa's for the latest VLC version, and (I think) ppa's for the vaapi library.

    Again, please take this this with a grain of salt. You would need to do more research about the topic.

    Here's some interesting links:

    It's all I can think right now (I'm sort of a Nvidia kind of guy),
    Regards.

    I hope someone will provide more accurate information.
    Last edited by papibe; September 7th, 2011 at 09:13 PM. Reason: spelling.

  4. #4
    Join Date
    Nov 2007
    Beans
    297
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: HD Video Stutter Issues

    Thank you Papibe, that's exactly what I needed and gives me a great direction to go. I'm not at all stuck with 10.04, I just didn't have a reason to upgrade until now. I'll look into this and post back.

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