[x264-devel] regular intra period

[Peter.List at telekom.de]

> On Wed, Mar 11, 2009 at 2:52 AM,  <Peter.List at telekom.de> wrote:
> >
> >
> > ...
> >> x264 will only generate non-IDR I-frames in the case that it detects a
> >> scenecut but it has been less than --min-keyint since the previous
> >> keyframe.  All non-scenecut I-frames are IDR.
> >>
> >> Dark Shikari
> >
> > Hi Jason,
> > I am wondering, what's the idea behind the fact that scene cuts are NOT
> > made IDR.
> 
> That is not what I said.  Read my email again, in particular, the
> phrase starting with the word "but."
> 
> Dark Shikari

Ok... I guess the "but" means (logical) AND. I still don't understand though, what's the advantage for a non IDR frame in this case.

Also, for a MPEG2 style GOP-structure with a key frame interval of 24 frames, what would be your preferred number for --min-keyint? 

Regards
Peter