You need to export to a codec with a million+ colours.
I've created an animation in 3dsMax that I'm planning to use as an overlay. I've imported it into PPro and the alpha channel works just great. I can slot stuff behind it and everything looks hunky dory. But I've had to play - cut it into bits and reassemble again - and so I wish to export it and reimport it later. However when I try this I lose the alpha channel. Is there a way for me to export the edited version complete with the alpha channel from PPro?
I might well get shot down in flames on this but I didn't think PPro was capable of exporting and preserving an alpha layer. I've never found any literature (books, manuals or magazine articles) on how to do this either so I not convinced you can do it from PPro.
I'd be very interested myself if a route can be found. It would be fun to build some of my own 'transition overlays'.
After Effects is capable of acheiving this though, I believe.
The plus ('+') sign next to the millions in 'millions of colors +' represents the alpha channel. Note that DV AVI does NOT support apha channels. You can output as quicktime for example to preserve the transparency or alternatively output something like a series of TARGA files.
I may, or course, be wrong.
Marc, I believe you are correct. Certainly you are correct on the quicktime format (millions of colors +) and that exporting as Targa frames can also preserve the alpha channel.
I don't know about After Effects (although I suspect it is the same) the default export format is Targa in Combustion precisely for this reason.
I am sure Premiere Pro will export the alpha layer as this is usually lost through the export format as opposed to a limitation in the editing software. Be nice if someone could confirm though I guess.
That's my opinion. If you don't like it I have others
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Thanks a lot. QT million + colours works a treat in Pro. However, importing into 6.5 loses the alpha channel. Any suggestions on how to fix that?