Combine alternative angles (original/updated effects) into one file

[DrWhoFanJ]

Hello, everyone. New poster here.

I've been spending the past few weeks importing my Doctor Who DVD&BD collection onto external drives, but I keep running out of space too early and having to clear some other things from them to make space.

The main culprit is that any episode with optional updated effects creates two copies of the entire thing (one with the originals & one with the updated versions). Is there any way these can be combined into one file to switch using an "angle" option of some kind? (It particularly doesn't help that the full gamut of subtitle and audio options are also duplicated between the two, taking even more space for things that are literally identical!)

Thanks in advance,
DrWhoFanJ.

[dcoke22]

Generally speaking it is one video stream per .mkv file.