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How come Final Cut won’t recognize RGB and alpha transparency from video rendered in Aftereffects?
I made an animation in Aftereffects to be exported and brought into FinalCut to be used as a layover on top of my video. (just a little animation that plays over top of the video I’ve already loaded into Final Cut.) I exported RGB + Alpha in Aftereffects so that the background would have empty pixels and my video clip would be transparent except for the animated content. However, when I loaded it into FinalCut, the background was black and not transparent. I tried loading it into AE, and it showed up transparent like it’s supposed to. Why doesn’t FinalCut recognize RGB and Alpha and allow empty pixels to be transparent?
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5 Replies
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Have you tried changing the Alpha Handling settings in the info panel?
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Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland -
What version of Ae?
V16 has a bug that alphas weren’t rendered. An update was released a day or two ago.
Other than that, try changing the alpha type as Jeff suggests.
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Also bear in mind that the file you render out to has to support Alpha Channel. ProRes422 does not. ProRes4444 is the only current one that does.
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Put it above the primary timeline. We do this everyday. In the primary timeline, add a generator, stretch it out as long as far as you need, fill it with any color, (we typically use white) then place the clip with the Alpha channel above it as a connected clip.
Robert Olding
Studio Eight | Director of Photography
https://www.studioeightmn.com
Minneapolis, MN -
Thank you, Jeff and everyone!
It turned out the alpha handling settings were not correct. I adjusted it and it worked. I appreciate all the helpful advice and am keeping it in mind for the future.
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