Result of VideoCapture.read() - Windows vs. osX

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Hi,

I run this piece of code on two machines: windows 8 with opencv 2.4.8 and osX with opencv 2.4.8.2:

VideoCapture capture(capturePath);

Mat frame;

if (!capture.isOpened()){ return -1; }

capture.read(frame);

For the same capture file and frame, I get different images:

I'm not sure what the different behavior could be. If you have any idea, I'd greatly appreciate it! Thank you so much for your help and effort!