How to get alpha channel from RGBA video ?

pfarmer flacone at
Mon Jan 23 04:13:24 PST 2012

Mathieu Virbel wrote
> (By the way, what is the difference between bpp and depth ?)

bpp:    "The number of bits allocated per pixel. This is usually 16, 24 or
depth: "The number of bits used per pixel by the R/G/B components. This is
usually 15, 16 or 24."


I posted this just because I was searching this on google and came to this

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