Snow Leopard iTunes 10.5 will not play multiple video tracks in QuickTime .MOV files

I recently discovered that Snow Leopard iTunes version 10.5 won't play multiple video tracks in a QuickTime .MOV file.
Both video tracks appear and play correctly when playing the file in:
- QuickTime Player 10 or QuickTime Player 7.7 on the same Snow Leopard machine
- iTunes 10.3.1 on another Snow Leopard machine
- iTunes 10.5 on Leopard or Windows 7
So I think the problem is iTunes 10.5 on Snow Leopard (although I haven't been able to test iTunes 10.4).
First test file is two 640x480 video tracks side-by-side (total dimensions 1280x480):
http://160.94.17.23/demo/two-video-tracks-1280x480.mov
All I see is the first (left) video track, and not the right one. iTunes "Get Info" command incorrectly reports the video dimensions of the file as 640x480.
Second test file is two 640x480 video tracks played one after another (duration of 10 seconds each):
http://160.94.17.23/demo/two-video-tracks-640x480.mov
All I see is the first video track, and although it reports the correct file duration (20 seconds), the second video track never appears -- it simply freezes on the final frame of the first video track for the last 10 seconds.
Anyone else see similar behavior? Unless I'm missing something, I suppose I should submit this as a bug to Apple.

I have the same problem, i tried re-installing, converting it to AVC H264 but none seems to work so far

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Snow Leopard iTunes 10.5 will not play multiple video tracks in QuickTime .MOV files

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