Video Slowdown in Quicktime Pro 7.1.3

Often when I playback any video in a Quicktime powered application, such as iMovie, or Quicktime Pro (7.1.3), the video, regardless of the screen size of resolution will slow way down, though the audio continues to run at normal speed. The video eventually freezes on screen, though the program is not frozen. I'm experiencing this on a G5 Dual 1.8 PowerPC with 1GB SDRAM. I've tried fixing permissions, defragging the harddrive, running hardrive maintenance programs, but nothing seems to work. Any suggestions?

Have you tried using the "Hardware" test from the Tiger install DVD?
Sounds like something may be wrong with your graphics card.
It could also be caused by out of date third party codecs (HD/Library/QuickTime). You could move third party codecs out (Desktop) and try again.

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    Message was edited by: David M Brewer

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