I've tried the tips here :http://support.apple.com/kb/TS1718
And the one that works is under the section :
Deselect Enable Direct3D video acceleration in the Video section
But it only works for 1 video. When the next one starts, check box is checked again. If I uncheck the selection, click Apply and exit then go right back into Quicktime, the box is reselected.
The same with the next solution.
Anyone know how I can make the change permanent?
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