[MPlayer-users] playing double layer dvd with external subtitles

[Rich Felker]

On Wed, Sep 20, 2006 at 05:51:21PM +0200, Alexander Roalter wrote:
> Petr Vopalensky wrote:
> >hi *,
> >
> >i would like to play dvd with my own subtitles
> >
> >mplayer dvd://1 -alang en -sub my_sub.srt
> >
> >but there is some problem with double layer dvds because when mplayer
> >starts to read from second layer counters are reset and subtitles are
> >starting from beginning :-(
> >
> >is there some way to fix/work around it?
> >
> >i use current svn version of mplayer
> >
> >	thank you,, petr
> >
> >
> This does not have to do with double layer, but simply the timestamps in 
> the mpeg stream. even a 5 minute movie you can reset the timestamp ever 
> ten seconds if you want.
> 
> Finding out the correct length of the MPEG video and the current 
> timestamp/filepos correlation is not doable without first scanning the 
> entire file (or using some obscure helping mechanisms -> summing up the 
> chapter run length, or what ever else...)
> 
> Half (or more) a year ago there was already a discussion here about this 
> issue.
> 
> Subtitlewise one could help by implementing a display on frame count 
> which would not reset, but would be out of order if one starts to seek :(

No, it's possible to get the timestamp corrections from the DVD
navigation information, I believe. This could be used to fix the
problem and implement correct seeking on DVD. Dunno if the current
dvdnav work will help on that or not tho..

Rich