[MEncoder-users] MPEG1 with constant bitrate

[Guillaume POIRIER]

Hi,

On 6/6/05, Jan Paul Schmidt <jps at fundament.org> wrote:
> 
> Am 06.06.2005 um 01:57 schrieb Rich Felker:
> 
> > On Sun, Jun 05, 2005 at 09:57:24PM +0200, Jan Paul Schmidt wrote:
> >> Hi there,
> >>
> >> I'm trying to get a MPEG1 video with constant bitrate with lavc. The
> >> lavc options are:
> >>
> >>      vcodec=mpeg1video:vbitrate=600:vrc_maxrate=600:vrc_minrate=600
> >
> > You forgot vrc_buf_size. Without specifying a buffer size, there's no
> > such thing as min/max rate. The concepts don't even make sense.
> 
> I stripped down the lavc options to where it does not make any
> difference. I had vrc_buf_size in it, but that did not have any notable
> effect to me, so I throw it out to let mencoder use some kind of
> default. I also tried vrc_eq=1, but that does not seem to affect
> anything either, probably because I don't understand this option :o)
> Hm, maybe I need a combination of vrc_eq and vqcomp?

Probably. Please read the last section of DOCS/tech/encoding-tips.txt
from MPlayer's source tree.

Guillaume
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