I know, subtitles are not a priority right now. But splitting multiple audio streams for a certain segment can be done via batch and join: save vid+aud0, save aud1 ... join (using MKVToolNix) vid+aud0+aud1
Sooo .... would it be possible to not only save a single audio stream per segment, but more? Say, not switch between audio streams, but select/deselect them. That would save some time when cutting files with multiple audio streams.