Try this :
Edit>Quicktime Preferences>Advanced>And under the category Video you 'll have to switch Safe mode (GDI only) radiobutton.
It should work 
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Topic Review (Latest First)
Posted by Thagy
21 Aug 2009 08:10 amPosted by Stew
26 Oct 2008 04:11 pmI am having exatly the same problem, but then quicktime crashes too.
Posted by Villu
29 Oct 2006 09:47 amHi!
I have a problem with Quicktime... If i play a video i can only hear sound becouse video goes green:S
I downloaded that quicktime alternative codec pack but i didnt work...
ty
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