Merging multiple disc BD movies with subtitles - which approach ?

[Darksoul71]

Hi there,

sorry if this has been asked before but I have not found a really good explanation on this topic.
Please note that I am aware that I could either merge / join multiple M2TS files from the BD with TSMuxer or multiple MKV files with MKVMerge but what does this mean for audio tracks and subtitles ?

I have a few BD movies which spawn over multiple disks (e.g. LOTR EE) and I want to merge those two disks into one file to be played back from my NAS.

Ususally my toolchain of choice produces a MKV file per movie with AC3 audio tracks in two languages and the original SUP subtitle files.

For audio I am pretty shure that merging multiple M2TS files result in a perfect audio track when I merge them with TSMuxer but what about the SUP subtitles ?

Or should I simply transcode each BD as MKV and merge them afterwards to one MKV file with the Matroska Mux GUI ?

TIA,
D$

[hubblec4]

a simple solution will be, you mux every BD to a mkv file.
in mmg(befor you mux the mkv-file) you set a "segment-uid, segmentedition-uid, next segment uid, perv segment-uid) for the second file the same.

the player plays this two files seamless as one edition.

[Darksoul71]

Thanks for the info !
So actually this is like "two MKV in one MKV", right ?
Essentially the "first" MKV inside one MKV container references the "second" one.

Hopefully I understood this correctly. So a segment UID is an unique identifier which I can choose for each MKV I want to merge ?

Sorry for asking this dumb but this is new to me.

:thanks: