[vlc-devel] [PATCH] dvdnav: add Demux submodule

Jean-Baptiste Kempf jb at videolan.org
Mon Mar 23 23:41:29 CET 2015

On 23 Mar, Rémi Denis-Courmont wrote :
> Le lundi 23 mars 2015, 19:48:35 Thomas Guillem a écrit :
> > Ah yes, we can't play dvd without seek.
> > dvdread has now an internal cache when probing IFO, therefore there is
> > much less seeks than before. So, can we use CAN_SEEK instead ?
> I don´t know how much it seeks. Presumably it does not seek much if at all 
> during playback, but what about menus?

Seeks are mostly happening in decryption part, but that is cached now,
in dvdread.

> But in any case, you need FASTSEEK because the probe function needs to seek 
> forward and back to zero - unless you find a way to probe based on the first few 
> hundreds of bytes like other demuxers.

That means if forced, it is not necessary.
And yes, I think it can be probed way better, in the way you described.

With my kindest regards,

Jean-Baptiste Kempf
http://www.jbkempf.com/ - +33 672 704 734
Sent from my Electronic Device

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