-
Alpha not recognized in PR4444
I’ve run into this issue with ProRes4444 source files inside FCP X. The file in question has mixed alpha conditions. The first segment in the file is a reference composite of animation over video. This is followed by the animation clean. This pattern is repeated for a series of animation clips.
The files was exported from the client’s FCP X (all clips as primary storyline clips, not connected). When I preview the file using QuickLook, I can clearly see that the sections of just the animation have an alpha. But when I try to key these as a connected clip over video in FCP X, it does not recognize that there is an alpha there and I can’t change it in the info pane.
The client re-exported only the animations without the reference composites and these keyed fine and FCP X recognized that there was an alpha in the file.
My guess is that if your file is mixed, like the first export, FCP X won’t recognize the alpha, because the first clip in the file doesn’t have an embedded alpha. I presume this is a bug. Thoughts?
– Oliver
Oliver Peters Post Production Services, LLC
Orlando, FL
http://www.oliverpeters.com -
2 Replies
-
See here. It seems to be a bug, there is a workaround;
https://forums.creativecow.net/thread/344/36774
-
Looks like this was fixed in 10.2.2
Reply to this Discussion! Login or Sign Up