The subpics on the R1 disc are not forced (see attachment). Not sure why they would be done differently, but they sure seem to be. While working on Vantage Point yesterday, I found that DVDFab would not render any subpic that had been modified with DVDSubEdit. They display fine in all my players but will not render in DVD to Mobile, no matter what settings you use. I don’t know if this is what you are seeing or if it is limited to Vantage Point only.