Embedding alpha channel in exported annimation?
 

Hi guys. Using CS5. I have Premiere Pro and After Effects, but I'd rather do as much as I can in Premiere as I know it much better.

Here's my situation: I've rendered an animation as a series of still images. The frames are 24 bit and do not have an embedded alpha channel. I did however render a separate sequence of images which is just the greyscale alpha images.

My question: Using Premiere (or failing that, After Effects) when I encode a video file of the animation, can I embed the alpha image sequence as the alpha channel of a 32 bit animation file? if so, how? I can't seem to figure it out.

Rendering at Max Depth will give you the Alpha Channel.

Thanks, Ann. What I meant was how do I tell Premiere that the separate greyscale sequence IS the alpha channel.