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Render with optional alpha channel

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Hannes Paulsson
Render with optional alpha channel
on Aug 4, 2011 at 9:52:52 am


A client wants me to render a clip (lossless .mov) with an alpha channel. The thing is that he wants to be able to separate the alpha and see what's behind, if you understand.

Basically, he wants a 10 sec clip, where the first five seconds is transparent, but if you choose to ignore the alpha-channel you can see whats behind it.

I have my clip and an alpha layer that i set with the "set channel" effect. When I render it out I choose "straight".

This almost work, when I import the rendered clip it works fine, but when i choose to ignore the alpha i only see about every 5th-10th pixel, the rest is all black.

Sorry if this is confusing, english isn't my first language and I'm a bit stressed.

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Hannes Paulsson
Re: Render with optional alpha channel
on Aug 4, 2011 at 10:43:27 am

Ah, figured it out. Didn't use 32bits.

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