afterFX Q
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- indian_pole
i'm supplying a .mov with alpha channel. my background is currently black.
how do i make sure it's transparent? there isn't a 'no colour' option when you choose the background colour... or is there???
- paddywop0
just leave it as pure black and it will be transparent... make sure you choose RGB & Alpha in the render settings...
- indian_pole0
cheers
- harlequino0
You might also supply a Targa image sequence with an alpha channel as a backup. I've had some tricky experiences with .mov's with alphas. Just a thought. Cheers.
- laurus0
make sure you select millions of colors+ (32 bit) in the quicktime options dialog ang RBG+Alpha in the AE dialiog. If you don't select both—it won't be transparent.
- indian_pole0
cheers laurus, didnt think about the quicktime options.
- growbran0
You can check your alpha channel directly in the composition window. Option-click the little RGB circles at the bottom or check on the transparency icon. You can check the manual if you're not sure which these are. Like laurus said, make sure your render settings are 32-bit when you render.
The color of the background makes absolutely no difference when you're rendering with an alpha channel. Black doesn't mean transparent.