Alpha Problem with Lens Flare Effect when imported to Final Cut!!
by Jay Blanda
on
Jun 18, 2009 at 5:53:54 am
I've just output a lower 3rd animation from AE as a QT file, RGB+Alpha, Unmatted, Animation compression. It includes a little lens flare animation for the text that when, and only when, it appears on screen I get a black background covering my final cut footage. When the flare fades out my footage is then visible again with the lower 3rd graphic. I've imported the footage into AE to check my mode settings to make sure they work and it looks great, so it must be the way I'm exporting? I'm super exhausted right now, so my apologies if this is a little inarticulate. If anyone out there can help I'd be forever in your debt!
Re: Alpha Problem with Lens Flare Effect when imported to Final Cut!! by Kevin Camp on Jun 18, 2009 at 2:33:51 pm
hi jay,
by itself, lens flare doesn't create an alpha channel.... did you apply the lens flare to a black solid and then use the unmult effect to make the black transparent? if so, then it should key properly... if you don't have the unmult effect it's a free download from redgiantsoftware.com:
Re: Alpha Problem with Lens Flare Effect when imported to Final Cut!! by Jay Blanda on Jun 18, 2009 at 3:16:16 pm
Thanks Kevin!
I did animate the lens flare on a black solid, but I've never heard of unmult before (is that an abbreviation for something?) and if it doesn't come standard in Final Cut 6 then I def. don't have it. I'll try the link you've included, but is that really the only way to achieve that?
Re: Alpha Problem with Lens Flare Effect when imported to Final Cut!! by Kevin Camp on Jun 18, 2009 at 3:28:24 pm
actually it would be for ae, but it may work in other software that can use ae effects.
and i think it is short for unmultiply... which is a reference to pre-mulitplied, which is an alpha'ed (i'm coining a word here) graphic rendered on black, so unmultiplying is pulling the black out.
Re: Alpha Problem with Lens Flare Effect when imported to Final Cut!! by Jay Blanda on Jun 18, 2009 at 4:44:10 pm
Cool. I hate to be a pest, but I'm not 100% sure how to use this plug in. I've thrown it into my plug-ins folder (not anywhere more specific than that), but now how do I find it in the program and use it?
Re: Alpha Problem with Lens Flare Effect when imported to Final Cut!! by david bogie on Jun 18, 2009 at 4:40:50 pm
It will appear as Knoll in your list of effects. You just apply it. There are no controls.
But you can immediately see the results if you view your canvas set to alpha. Unmult is one of the many filters Adobe should just buy and include with AE.
