[MEncoder-users] mencoder and dvdnav://

[Vladimir Mosgalin]

Hi Sebastien Fievet!

 On 2011.02.09 at 23:04:09 +0100, Sebastien Fievet wrote next:

> > DVD streaming is made with mencoder dvd:// [options], and with some titles i
> > have, it breaks. I decided to take my chance and make it use mencoder
> > dvdnav:// [options] instead to see if it helps. It does... With side
> > effects : Streaming jumps backward in the DVD stream repeatedly, making the
> > playback experience rather unpleasant. :-(
> > 
> > My question is :
> > - should the -nocache switch be used with mencoder dvdnav://
> > - could the lack of it cause the jumps i experience?

Well why don't you just try it out?

> > - is dvdnav support in mencoder widely used and robust, or rather untested?
> > 
> > Thanks for your help,
> > Seb.
> 
> Please.... Help!

I believe it's the last version, I'm surprised it works at all. It's
not just mplayer, I don't think there are many systems which combine
dvdnav-like dvd processing together with encoding, as by definition all
the menu, advertisements, previews, pictures and other stuff on the dvd
is made for watching, not re-encoding. So most encoding software only
access main video stream directly without processing dvd navigation
structure.

I know that there are some dvds where you can't play stream directly
due to copy protection and such and which are playable with dvdnav only,
well I don't think you'll be able to rip/encode stream off such dvds
easily, because after all, such inconvenience WAS made in order to
complicate ripping such material off original dvd.


-- 

Vladimir