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Directshow WMV decoding processing loading too high
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Dave
Sep 8, 2011, 3:25:39 PM9/8/11
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Hi,
I'm using directshow to decode an HD wmv video file in C++. Basically,
there's the standard DirectShow decoder, a sample buffer and then a
null renderer.I use the sample buffer to extract the video frames. I
copied this code from the microsoft website. This works fine except
that the frame rate is not as good as I would like. I think this is
because the processor loading is so high (100%!). I am confident that
the processor loading is due to the video decoding and not the video
displaying.
Therefore, my question is: How can I reduce the processor loading?. Is
an WMV the best video to decode from?. Is there anything programmably
that I can do to improve the efficiency?.
Any comments or suggestions gratefully received.
Ta,
Dave
I'm using directshow to decode an HD wmv video file in C++. Basically,
there's the standard DirectShow decoder, a sample buffer and then a
null renderer.I use the sample buffer to extract the video frames. I
copied this code from the microsoft website. This works fine except
that the frame rate is not as good as I would like. I think this is
because the processor loading is so high (100%!). I am confident that
the processor loading is due to the video decoding and not the video
displaying.
Therefore, my question is: How can I reduce the processor loading?. Is
an WMV the best video to decode from?. Is there anything programmably
that I can do to improve the efficiency?.
Any comments or suggestions gratefully received.
Ta,
Dave
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