Handling multi-disc films
Posted: Sun Dec 06, 2020 5:21 pm
I recently ripped my new 4K Lord of the Rings set, and the extended editions are on two discs each. Having two files for each movie is kind of pointless and unnecessary. This isn't the first time I've had to deal with this, as the regular blu-rays are also on two discs, as well as a number of other movies I have.
My solution has been to make full backups of the discs, join the two m2ts streams with tsmuxer, then multiplex them into an mkv with mkvtoolnix. So far, this has been good enough, but it has some shortcomings.
My solution has been to make full backups of the discs, join the two m2ts streams with tsmuxer, then multiplex them into an mkv with mkvtoolnix. So far, this has been good enough, but it has some shortcomings.
- Chapter information is lost.
- mkvtoolnix lacks the same support for multiplexing dolby vision data that makemkv has.
- On rare occasions, the audio and video streams won't be the same length, probably due to a mastering error. This results in them being out of sync in the second part of the film after joining. This can be fixed by trimming the last second or two off part one with tsmuxer.
- Things could get hairy if a two-disc movie is ever composed of a complex playlist with many m2ts streams per disc.