[MPlayer-users] vobsub without VOB

[gilles at harfang.homelinux.org]

Hello.

I've extracted the subtitles from a VOB file into vobsub format ('movie.sub' and 'movie.idx'), then with the following
   mplayer -vobsub movie -vobsubid 2 movie.mpeg
they display as expected.

I've encoded the above 'movie.mpeg' file into 'movie.720x300.xvid.avi' but then with the following command
   mplayer -vobsub movie -vobsubid 2 movie.720x300.xvid.avi
the subtitles will not appear.

Since I've suppressed the black borders, I thought the subtitles might be hidden and I tried the following option
   -vop expand=750:600 -subpos 90
but to no avail.

What's wrong with my expectations?

As a subsidiary question, how can I transform vobsub subtitles into mpsub format?

Thanks for your help.