I work in Adobe Production Premium CS3. I have been given just over 20 minutes of HD (1080 30p XDCAM) green screen footage that I have removed the green from. I need to return the footage to the client with an alpha channel. He will be handling the edit from there. I tried exporting from AE using the QuickTime Animation codec w/ an alpha channel. The resulting file looked great, but is 132GB. Are there any other encoding options that would yield a high-quality result, but be smaller in size?