[Mplayer-users] Fwd: subtitles
arpi at thot.banki.hu
Tue May 15 14:07:58 CEST 2001
> > I for one would love to be able to speed up, slow down the subtitle
> > appearance (like can be done with + and - for the video). Very often
> > subtitles don't run in sync after a while :(
> > Thanks,
> > Jelmer Feenstra
> Subtitles dont have "reason" to run faster or slower.
> Maybe you have subs measured in fps (frames per second) and
> video has different fps than subtitles. In this case
> you have to explicitly define subtititles fps with -subfps switch.
> Well, stone me if I am mistaken.
I have bad subs too, with out of sync. And I think I know the problem.
DVD has mpeg2, usually progressive streams. its fps variables between
24-30 fps, depending on scene complexity etc.
subs grabbed from such dvd disks can be bad for constant framerate
divx avi files, and run out of sync sometimes. for example i have
sub working with -subfps 26.25 fps... it's usually in sync, but
sometimes (at slower parts, maybe there was low fps rate originally)
Another question is that sub is synced to audio or video? I think that
frame-based subs are for video and time-based for audio. right?
Something like +/- can be added easily, just increment/decrement the
sub_delay variable by for example 0.1
But I don't know which keys are the best for it. Any ideas?
A'rpi / Astral & ESP-team
mailto:arpi at thot.banki.hu
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