MT2S and External Subtitles

When I play a movie in M2TS format using external subtitles, after pressing stop and playing back the movie again, the subtitles gets unsincronized, it doesn’t even work left and right buttons to add a delay to them.

You don’t mean pause but resume after having stopped, right? What sub format? I’ve tested it with external vobsubs and upon resume the subs are indeed off, shifting works but I can’t get them  in synce again either.

well, I don’t know exactly, but i guess they are .sub extension.