1 2 Previous Next 25 Replies Latest reply: Jan 31, 2012 3:32 AM by tim.chaffin Go to original post
  • 15. Re: Choppy Video Playback
    paulimausi Level 1 Level 1 (15 points)
    I, too, have a problem with choppy video/audio playback since upgrading to Snow Leopard.

    The problem occurs only when an external display is attached.

    It seems to occur when other programs access the network during playback. (E.g. MobileMe Sync, Safari updating webpage previews.)

    It is worst when the video is a flash video streamed over Internet (in Safari or Zattoo) but also occurs in QT Player (X).

    And it occasionally leads to crashes. (Grey screen of death or just a completely unresponsive computer.) Sometimes the crashed computer will continue to emit strange choppy sounds, it seems to repeat parts of the audio track.

    Since I dropped my MacBook once, I figured it might be a hardware problem, but now that I hear of your problems I am not so sure anymore.
  • 16. Re: Choppy Video Playback
    jongregorio Level 1 Level 1 (0 points)
    Have you found a fix?
  • 17. Re: Choppy Video Playback
    azdbac Level 1 Level 1 (0 points)
    I have tried everything. Every suggestion I can find on the internet. Still have not been able to watch a video with out it freezing and extremely choppy ever since I loaded Snow Leopard! Does Apple not care? I have not seen an answer to this problem. If anyone has an answer please let us know.....
  • 18. Re: Choppy Video Playback
    Fatima74 Level 1 Level 1 (0 points)
    I run Snow Leopard 10.6.5, both Quicktime 10.0 and QuicktimePro 7.6.6 and I own a MacBook Pro (2.53 GHz with 4G RAM). And I have the same problem with choppy and out of sync HD playback. I am finding thread after thread complaining about the same issue with no solutions. It's been over a year since SL came out and I don't see anything about Apple addressing the issue. This is absolutely unacceptable and I feel cheated by Apple for buying a mac to be able to work on and playback HD media.
  • 19. Re: Choppy Video Playback
    genesis2seven Level 1 Level 1 (0 points)
    I am getting very choppy to the point of being unwatchable video playback in QuickTime.

    H.264, 1280 x 720, Millions
    AAC, 2 channels, 44100 Hz

    Same videos from my Flip Ultra HD and Nikkon D90 play fine in VLC, but it is crappy because I have QuickTime Pro so I can trim them.

    Nothing else eating up processor or memory either. Very frustrating.

    Message was edited by: genesis2seven
  • 20. Re: Choppy Video Playback
    SAV Level 1 Level 1 (35 points)
    I have this problem, too. I notice it especially when I watch videos online (Vimeo, YouTube, etc), which is about 25% of my work on the computer, so.... really really annoying.

    Sound continues just fine, but video freezes every 10 seconds or so, then maybe 4 seconds later skips ahead and catches up. I started having this problem only a few weeks ago, and it's become much more frequent with time. I really hope they fix this as it's starting to creep into iTunes playback as well.
  • 21. Re: Choppy Video Playback
    selven Level 1 Level 1 (0 points)
    I think i found a temp fix, It seems to me that all 64bit video players, e.g quicktime 64 and vlc 64 are having this choppy issue, i just uninstalled vlc 64 bit and replaced it with vlc 32bit, problem stopped.

    Gone are the choppy video and /or choppy sound
  • 22. Re: Choppy Video Playback
    tonebuddha Level 1 Level 1 (0 points)
    I had choppy playback under Leopard, and found complaints about it on forums but the problem was fairly intermittent so I lived with it.

    Then I started getting a similar problem with audio, first embedded mp3 in web pages, then Garage Band, then even iTunes. At first I treated it as a separate problem to the above. Followed some forum suggestions (dump refs, make new profile) and they helped for a day or two then it was back.

    Decided it might help to upgrade to Snow Leopard, which I did, and now both problems are worse than ever and as they have some common features (both contain audio, are worse when they are embedded or played through Flash) then it has struck me that the video problems may be caused by the audio track?

    The audio glitching is not so bad when I listen to Soundcloud and is variable on iTunes.

    I guess the only thing left is to do a full reinstall.
  • 23. Re: Choppy Video Playback
    dix_xib Level 1 Level 1 (0 points)

    I found this solution yesterday. Maybe old? But it still worked for me. My computer is like it should have been in the first place - an awesome media center.


    Open Terminal, enter the following command:
    sudo mv /System/Library/Extensions/AppleGraphicsPowerManagement.kext/ /System/Library/Extensions/AppleGraphicsPowerManagement.disable


    Enter your "root" password, this is usally the same as your account password


    Let it run, close Terminal


    Run Kext Utility found here


    Run it until it says it is completed




    Go into System Prefs, open Power Options and slide the second bar (screen) to 1 minute. Apply


    Let your computer rest for 1 minute until screen goes black.


    Done. You now have a Mac Mini without lag. This worked on my Snow Leopard setup, and now with Lion.


    Awesome! Thanks to dok34! His/their website with a complete guide to this found here.


    Video guide found here

  • 24. Re: Choppy Video Playback
    terrencebarr Level 1 Level 1 (0 points)



    I, too, had choppy video playback throughout the whole system: QuickTime, VLC, EyeTV on my MacMini  (mid-2007) with 10.6.8. After much trial-and-error the culprit turned out to be an outdated Flash player. I updated to Flash player 11 directly from the Adobe site, rebooted the machine, and now all video playback is fine again!


    What must have happened is that the previous Flash player worked with my older Mac OS X version. When I upgraded to 10.6.8 the now outdated Flash player started messing with the video playback of the entire system. Another poor piece of software by Adobe - can't get rid of it fast enough.


    Hope this helps some folks out there. This issue should drove me nuts in the last two weeks!

  • 25. Re: Choppy Video Playback
    tim.chaffin Level 1 Level 1 (0 points)

    This worked great for me so far. I am just curious as to why this works? What does this method change? Whats the deal with the NVidea card being at fault?

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