|Re: [AD] Fw: Acquire/Release speed issue|
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> Doesn't create_video_bitmap() initially allocate from the same surface
> as the screen?
No, almost never. Only if the bitmap has the same dimensions as the screen.
> Also, I don't really see how the locking mechanism scales. 479 scanlines
> takes 6.8s, but 480 scanlines takes 7.1s.
It doesn't scale: locking means locking the outermost parent.
> Then shouldn't video2 be just as slow as sub-screen?
No. video2 is the same as video.