This is probably the issue. I bought some Blu-Ray discs that came with free downloads from either iTunes or Vudu and I chose iTunes. So it sounds like what I really need to do is just rip from the discs instead of trying to use the iTunes version, yes?Of course, iTunes DRM media won't play in non-Apple players, but I don't have much of that stuff.
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Oh, I’ll have to try this! Thanks!Easy enough to do without loss...
ffmpeg -i "path/to/file.m4v" -c:v copy -c:a copy "path/to/file.mkv"
Or drag m4v files into MKVToolNix and "start" multiplexing.
Near "instant" conversion.