Very nice signals but does not work, same problems whatever i try.
DVDJunky use prog Vidcoder latest 4.16 for convert 265/264 and subs movies mkv/mp4
Easy job
For 265 to 264 or same codec
Load movie or more, movie(s) is scanned, put in wait line
If subtitle shows it is included click standard also import srt possible but first check for sync, hover over standard and info is shown. Standard is convenient for more subs/language like extern srt. You have a choice.
Goto encoder settings and change container to mp4/mkv, videocoder frame same as source or others codec choose, audio code passthrough(fastest)
If you don't need original subs use dvdfab and an extern sub(srt), faster than Vidcoder, but files become much larger about 3 to 4 times original for a decent quality
Good luck DVDJ