Got a Blu Ray movie, Afro Samurai Directors Cut - Region B, that has 5 episodes on a single layer Blu Ray. Using BD Rebuilder to back up just the 'movie' it seems to go OK as it does not re-encode the video but then compresses the audio for some reason? The 5 episodes are in separate m2ts files which are about 4.2GB each.
The whole disc is too big to make a 1:1 backup on a BD-R or BD-RE so wanted just the episodes but BD Rebuilder keeps converting the audio, the 5 episodes take up 20.3GB which fits a BD-R or BD-RE without re-encoding anything.
Tried TSMuxer and that seemed to work but created an iso 20GB+ in size with a 20GB+ m2ts file but only the first episode would play?
What is the best program/procedure to backup an episodic Blu Ray?