[Ffmpeg-cvslog] CVS: ffmpeg/libavcodec mpegvideo.c,1.498,1.499

Guillaume POIRIER poirierg
Sun Dec 25 22:28:23 CET 2005


Hi,

On 12/25/05, Michael Niedermayer <michaelni at gmx.at> wrote:
> Hi
>
> On Sun, Dec 25, 2005 at 08:53:00PM +0100, Guillaume POIRIER wrote:
> > Hi,
> >
> > On 12/25/05, Michael Niedermayer CVS <michael at mplayerhq.hu> wrote:
> > > Update of /cvsroot/ffmpeg/ffmpeg/libavcodec
> > > In directory mail:/var2/tmp/cvs-serv28677
> > >
> > > Modified Files:
> > >         mpegvideo.c
> > > Log Message:
> > > b frame strategy 2
> >
> > How should I update the man page with?
> >
> > vb_strategy=2: uses an adaptive number of B-frames
> >
> > Smth like that? Is that option supposed to have an impact on encoding
> > speed (compared to 0 or 1)?
>
> 2 is slow, and more or less optimal, speed and quality can be tuned with
> -brd_scale and -vmax_b_frames
> speed should increase by a factor of 4 every time brd_scale is increased by 1

Ok thanks, I'm gonna commit a manpage update shortly with your tips.
However, I have one more question: does vb_strategy still only works
during the first pass?

Guillaume
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