[MPlayer-users] vobs and broken time codes/reference clock

[Mike Castle]

The following may not all be mplayer related, but I'm hoping I can get
some advice from users here as well.

I have a DVD where, when I use -dumpstream on it, results in a vob
where, about 2/3rds of the way through the movie, the time code resets
(amusingly enough at a scene that display a big REBOOT).

This also happens if I copy out the vob using libdvdnav's menus.c example code.

When I play the track using  mplayer dvdnav://30 (on the disc in
question, I must use dvdnav: as dvd: does not work), it displays the
time code accurately.   But on the dumped stream, -osdlevel 3 shows
the movie to end around 1:10 or so, but actuallky plays a bit longer
than that, then starts the counter down at 0:00 again.

When I use a tool like ccextractor on the vob
(http://ccextractor.sf.net) to dump a .srt file, it displays a message
like:

 73%  |  70:53
Warning: Reference clock has changed abruptly (-4303 seconds), attempting to syn
chronize
Last sync PTS value: 387294997
Current PTS value: 17607


Well, ccextractor fixes the timestamps on the closed captioning, but
of course, when I play back the vob using the .srt file, the last 3rd
of the movie is all out of whack (instead redisplaying the ones from
earlier in the movie).


So, I would like to either have the ability to fix the vob or to avoid
the problem in the first place.

I'm guessing that mplayer's dumpstream (at least for dvd's) is pretty
much the same as the menus.c example:  Just take the packets from
libdvdnav and put them straight to disk, with no mpeg2 processing at
all.