Hi, I may not be able to answer your problem , but can you please confirm that your footage out of AE is in .mov format?
If so maybe have a peek at one of my posts losing video previews. It probably is not related but as you will see I have put a fair amount of effort into solving my problem, and wondered if there could be a link.
Ps I only refer to PP not flash in my posting as I have had no dealings as yet with flash.
Thanks for responding! I did export to MOV from AE. Can you send me a link to the discussion you're referring to? I'ld like to read it. FYI, after the 11th render, the bars seem to be gone. I'm still hoping for a solution though becasue that took all day and I think I just got lucky that 11th time
Maybe a bit late to join in, but why did you export from AE using h.264? I ain't no codec expert, but I would export to something lossless from AE, since you are on a Mac try Animation as a codec, which is even capable of including an alpha channel. At least it's worth a try...