I don’t have a solution but have a similar problem. I am working on a one second shot that I would like to make two seconds (200%). I have been using time remapping, time stretching, time warp filter, and have not been satisfied with the results. I have the best results with pixel motion turned on but there is a weird phenomenon happening. The edges of my character are pulling pixels surrounding his body with him for a couple frames at a time. And when his arm crosses his body it produces pixelated holes. Is there a solution to this? I have done some previous searching and found a 3rd party plugin called Twixtor. Does anybody know if it is worth the money?
Thank you.
Carlos Weaver