I'm working on a project that is 2560 x 1440. the Desk Animation (link) is a series of TGA files that I brought in (that include an Alpha channel). For the Alpha, I used "Guess" for premultipled alpha. If I use the blue-grey as my alpha, I get a white fringe around the desk. So "Guess" seems to work the best. The issue seems to be two things: When there is fast movement with one of the parts, there are light grey artifacts that appear on the background, mainly around the part that is in movement. The second issue is when one part overlaps another part, there are also artifacts, or distortion of the part.
I'm working in a 24fps project, the image series has been interpreted as such too. I have frame-blending on as well as motion blur for each comp, as well as the master comp. I've tried everything from exporting to H264 (preffered), to export as individual .tif images. Nothing that I try seems to work.
The final playback is to be done on a 27" iMAC at a trade show, hence the large resolution.
Thanks!
