QT movie processing on GPU
Question
I'm working on a QTKit project in cocoa where the QT movie is taking up ~70% of the CPU load. I would like to move some of the processing load onto the GPU, if possible. Does anyone know if that is possible?
2 answers
solution1
2 ACCPTED 2011-02-06 22:47:28
On Snow Leopard, use initWithAttributes:error: to create the QTMovie object, and include the QTMovieOpenForPlaybackAttribute attribute with a value of YES . This will use QuickTime X to decode/play the movie, which, if possible, will play it with GPU acceleration .
Be aware that this locks out a lot of functionality. You really do need to only be using the movie for playback. The QuickTime Kit Application Programming Guide has more information.
solution2
1 2011-02-06 20:37:33
Install a GPU QuickTime codec for the movie format you want to support ? Apparently such things exist, eg CoreAVC.
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