[FFmpeg-devel] [PATCH] HWAccel infrastructure (take 6)

Stefan Gehrer stefan.gehrer
Sat Feb 21 11:29:02 CET 2009

Jean-Michel Pour? wrote:
> Would it be possible for you HWAccel infrastructure to include some kind
> of hardware decoding with access to frame content, without display. This
> is needed in the case of video editors.

This would usually require to copy the decoded frame from the graphics
card / video memory back to system memory, which as far as I know is
a slow operation on most systems.
I heard once the opinion that it is so slow, it defeats the advantage
of hardware accelerated decoding. But I have no experience in that
matter of my own.


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