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Alex Rivera
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Suppose I have an OpenGL game running full screen (Left 4 Dead 2). I'd like to programmatically get a screen grab of it and then write it to a video file. I've tried GDI, D3D, and OpenGL methods (eg glReadPixels) and either receive a blank screen or flickering in the capture stream. Any ideas? For what it's worth, a canonical example of something similar to what I'm trying to achieve is Fraps.
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