[MPlayer-users] Re: mplayer -identify with ogm files

[D Richard Felker III]

On Wed, Jul 02, 2003 at 07:29:50AM -0500, Jonathan Rogers wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> D Richard Felker III wrote:
> >ROFL, absolute timestamps in mpeg?!?! Check that DVD again... :((
> 
> I've checked many DVDs. Specifically, I've copied VOBs from DVDs using 
> tccat (from transcode) and split them into 1GB chunks. When I play the 
> first chunk using mplayer, time starts from 0:0:0. When I play a later 
> chunk, time starts from 0:30:0 or whatever the movie time is at that 
> point. I just tried one a couple of seconds ago.
> 
> Do my eyes deceive me? If you don't believe me, try this:
> 
> dd if=input.vob of=output.vob bs=1000000 skip=100 count=10
> 
> This will take about a 10MB chunk from about 100MB into input.vob and 
> put it in output.vob. Play output.vob with mplayer and watch the time. 
> Mine starts at about 190s in this case. Alternatively, try "mplayer -sb 
> 100000000 input.vob".
> 
> Either there is some kind of global, absolute timestamp or mplayer 
> magically knows how far into the movie it is. Now that would be cool: a 
> clairvoyant input module for mplayer. All I'd have to do is: "mplayer 
> clair://the.movie.I.want.to.see". ;)

There is a timestamp, yes, and of course it's kept if you cut the file
(how could it not be?!?!). But it's anything but global or absolute.
Countless DVDs reset to time 0 at every chapter break or randomly in
the middle of nowhere.

Rich