Jumpy video playback HD in VLC

Discussion in 'MacBook Pro' started by Messenger, Jul 30, 2008.

  1. Messenger macrumors newbie

    Dec 27, 2006
    I received my Dell 2709w screen today, which is very nice btw, and wanted to test out the HD capabilities. Playing a 720p movie fullscreen results in a very jumpy, jittery playback during panning shots. "Still" shots are mostly okay.

    Could this be a RAM issue, I can still add 1GB.

    15" Macbook Pro, 2.33 C2D 2GB.
    Screen attached with DVI-D cable.

    Thanks for any insight!
  2. II AndyG33 II macrumors regular

    II AndyG33 II

    Jul 8, 2008
    Do you have an ATI card or a NVIDIA card?
    im not sure which one is in that computer

    If its NVIDIA there has been major issues with this card
    if its ATI
    could be RAM or V-RAM... just not enough

    and lastly,

    on your dell screen.
    do u find the text size too big in browsers and things
    cuz i would love the size of a 27inch
    but i know that it only has a 1920x1200 resolution
    a screen shot would be nice!
  3. Cave Man macrumors 604

    Cave Man

    You need to tell us the file specs - encoding format, bitrate, fps, etc. You also need to tell us which version of VLC you're using. Have you tried XBMC?
  4. Messenger thread starter macrumors newbie

    Dec 27, 2006
    Chipsetmodel: ATY,RadeonX1600
    VRAM 256 (Is this upgradeable? Think it isn't).

    VLC 0.8.6i (latest).

    Resolution: 720*480 (Anamorph)
    Frame Rate: 23.976 fps
    Aspect Ratio: 16/9
    Video Codec/Bitrate: x264 ~1344 kbps

    The screen is beautiful, I don't find text to big, I have it at about one meter/3 feet distance. I just find it to big on the whole, since I've been working on my 15" mbp for the past year! I'm sure I get used to it.
  5. Cave Man macrumors 604

    Cave Man

    This is likely your problem. That's a very low bit rate and in scenes where there's a lot of movement (i.e., rapidly changing pixels) you're going to see lots of artifacts.
  6. alphaod macrumors Core


    Feb 9, 2008
    Well bit rate can be low if the file is encoded well.

    @OP: It's possible the video was encoded poorly. Did you try about video file?

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