Agreed, Harmy. It would’ve saved me multiple steps to get where I am now at least. As it is, I’m working from a new, movie-only ISO I made through tsmuxer, so up to that point nothing’s actually been reencoded. I tried MakeMKV, but I haven’t done a screenshot comparison yet. Looks good from what I can see though, with grain apparently untouched and a file size of 29.9 GB.
If your computer didn’t spend hours encoding anything, and it only remuxed it, you don’t need to worry about video quality. As long as all the audio is there, and the two videos (crawl/rest) are playing nicely, it sounds like you should be in good shape.