Run those .tivo files through VideoRedo like I mentioned earlier and play the .mpg output file. That may clear it up. I suspect that the TiVo DRM Filter may be having difficulty in some cases with HD content. What cases/causes I have no clue. Playing the mpgs takes that out of the loop. Or perhaps some HD .tivo files have some strange mpg stuff in them and VideoRedo cleans that up. Again, all black magic to me.