[FFmpeg-devel] [DOC] FFSERVER Configuration Files.

[Michael Niedermayer]

On Wed, Aug 08, 2007 at 10:32:23AM -0700, Piero Bugoni wrote:
> 
> --- Michael Niedermayer <michaelni at gmx.at> wrote:
> 
> > > +#  Settings:
> > > +#
> > > +# The Q	value is pretty important here. Values of around 5 to 7.5
> > > +# give a reasonable compromise between stream width, and image quality.
> > > +# Make sure to match the settings in this file with those on the command line.
> > > +# in this instance values grater than 10 will probably make image indiscernable.
> > > +#
> > > +# Some additional settings for higher quality, but a fatter stream:
> > > +#
> > > +
> > > +# Qmin/Qmax=1, vbr~=12000, vbuf=52(min)
> > > +# Qmin/Qmax=2, vbr~=7100,  vbuf=33(min)
> > > +# Qmin/Qmax=3, vbr~=5200,  vbuf=22(min) good quality/stream compromise
> > > +# Qmin/Qmax=4, vbr~=4800,  vbuf=21(min)
> > > +# Qmin/Qmax=5, vbr~=4000,  vbuf=19(min)
> > > +# Qmin/Qmax=6, vbr~=3200,  vbuf=13(min)
> > 
> > constant qp encoding is not suitable for streaming over a channel with
> > limited bandwidth
> > 
> 
> OK.
> 
> (How limited)?  I have around 320Kb/s upload speed to the net.

you misunderstand
fixed qp encoding IS fundamentally not suitable for streaming, it does not
matter what bandwidth you have
if you do have 100mbit/sec you might get away with a 5 streams at constant
qp if the resolution isnt too high (dvd resolution or below)

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

When the tyrant has disposed of foreign enemies by conquest or treaty, and
there is nothing more to fear from them, then he is always stirring up
some war or other, in order that the people may require a leader. -- Plato
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