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July 2, 2008 4:00 PM PDT

Another potential fix for choppy playback in QuickTime 7.5

by CNET staff

Wednesday, July 2nd

Users who updated to QuickTime version 7.5 have been plagued by some annoying problems, including choppy playback, as noted here.

As previously reported, many users have resorted to downgrading their QuickTime installation to version 7.4.5 by using Pacifist. However, some users found choppy playback to be associated with improperly loaded plug-ins and add-ons from third party vendors as well as those included by Apple with prior versions of Quicktime.

Third-party add-ons include DivX, Flip4Mac, or FLV components, while the included plug-ins are AppleIntermediateCodec.component, and AppleMPEG2Codec.component. The files for these are located in the root library, therefore a faulty component will load improperly for all users, resulting in choppy playback even when a user creates a new account.

Fix

  • Remove and re-add all quicktime components and plug-ins.
  • Navigate to /Library/QuickTime/
  • Move all plug-in ".component" files from the folder (to the Desktop, for instance)
  • Launch QuickTime and quit it again
  • Place the ".component" files back in the QuickTime library folder
  • Launch QuickTime again, and the choppiness should be better.

Feedback? Late-breakers@macfixit.com.

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    Add a Comment (Log in or register) (3 Comments)
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    by pseudonym July 2, 2008 4:33 PM PDT
    I don't understand what would keep the components from loading "improperly" again on subsequent Quicktime startups.
    Am I missing something?
    Reply to this comment
    by musicMMan July 2, 2008 7:44 PM PDT
    Removing the components and running Quicktime doesn't get rid of the problem. Putting them back didn't make any difference.

    But here's a twist. Take your choppy movie and export it to a WMV (Flip4Mac). The resulting WMV plays fine in both the Windows Media Players and Quicktime. But in QTime Pro take the same WMV file and re-export it as a Quicktime file and it's back to it's choppy self again.

    So it seems that the problem with Quicktime is reading Quicktime files. Windows files are fine. Of course, that doesn't help those if us who depend on QTime to make a living. My DAW is not going to read a WMV file. It want to see a QT file. And so do I, darn it!

    Apple needs to place this at the top of the list.
    Reply to this comment
    by JPSaltzman July 22, 2008 7:59 AM PDT
    The comments of most articles on MacFixIt lately have been cluttered with spam and mindless Chinese text and links to ads.

    Doesn't anyone clean up or monitor MacFixIt anymore? Or is it just part of C|Net (soon to be CBS)'s downgrading since buying Ted out?

    ;-(
    Reply to this comment
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