Re: compression question

On a PC since CS4. In fact, when you chose the h.265 codec inside of Quicktime (in encoder), you are warned not to do it. So I export H.265 directly as .mp4 files. Quicktime can play back .mp4 files just fine EXCEPT that it does not see the pixel aspect ratio - thus the square pixel requirement. I have forced Quicktime h.264s and interestingly they don't preserve the pixel aspect ratio either. I have never used PPro on a mac, so I can't help you there. On the PC, I think Quicktime is dead or dying. H.264 alone is as good and FLV/F4V is becoming the web standard for video. At least in PC land.