[Nina Frost] "Yes its 1500x 1200. They are joinng 3 screens to forma screen size of 4500x1200. Think they are using a coolux projector system."
That suggests three standard 1600x1200 projects with a 150px overlap to me -- not three edge-butted non-standard 1500x1200 displays.
Coolus Pandoras Box supports other formats, including AVI, WMV, and MOV. You might try to send them a QuickTime animation codec test file.
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