adding subtitle to blu-ray

[SUPERIOR]

first off, pardon me if this question has been asked before ... i just have many questions, so i don't think, there is a thread which covers all .....

and i am still newcomer to blu-ray movies, so forgive me if some question is naive :confused:

i have a blu-ray movie with menu,special feature,......full disk
i want to add another subtitle to it, i read some but my questions are :
1) what is the best demuxer to demux streams?
2) what if the movie has many M2TS files for one movie? i mean is there any way to do it like "DVD decypter" one stream for all movie?
3) what the type of subtitle blu-ray supports?
4) what is the best authoring tool?
5) let's suppose I do everything right way (remuxing), how can I restore the menu and special features?

the only thing i focus on, how to deal with many M2TS files

any help would be appreciated
Thanks for advance :thanks:

[turbojet]

I'm not going to refer to best but these are what I use in these situations and it's not very simple to do.

1) TSMuxer and eac3to are the most talked about ones on this forum and can handle mostly everything except PIP
2) demux the proper mpls with eac3to
3) bluray only supports raw images but tsmuxer supports sup and srt
4) I've never had much luck with any 'authoring' programs I've tried
5) You might be able to get away with doing this:
- find and load the mpls of the main movie into tsmuxer (if its multiple m2ts use eac3to to demux first)
- select the streams you want to keep add in the external srt or sup you want to add and output a bluray
- from tsmuxer output rename the mpls/clpi/m2ts files how they are in the original (if its multiple m2ts on original name the m2ts to one that isn't in use)
- hexedit the mpls and clpi files to point to renamed m2ts (tsmuxer points to 00000.m2ts by default)
- copy the mpls/clpi/m2ts files to original bluray also remember to copy mpls/clpi to right place in backup directory
- burn the BDMV/CERTIFICATE folders to a BDR
- hope it works

This process isn't really tested and there isn't an app to easily do this yet, if this doesn't work the only thing that might work is sonic scenarist

[SUPERIOR]

Thanks very much turbojet for this great help, i will try these steps
Thanks again, God Bless you