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

[Michael Niedermayer]

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

[...]
-- 
Michael