I’m using animation from DVD, inverse telecined and converted to AVI. It’s a training project/parody where I do a lot of modification to the original in After Effects and arrange the clips in Vegas. It’s meant for computer viewing only, so the final version will be a 640×480 @ 23.976fps AVI.
The problem doesn’t seem to be only with AE. I did a test with a 23.976fps AVI I had lying around by importing it both as video and as an image sequence. Their length on timeline was the same, but some of the frames in the video version had shifted. I also noticed jerky motion in some places that was caused by a frame being “freezed” for a frame or two. The image sequence looked just fine.
Can you elaborate on why you consider 655×480 better than 640×480?