[MEncoder-users] new doom9 codec comparission

[Guillaume POIRIER]

Hi,
On 12/3/05, Matthias Wieser <mwieser at gmx.de> wrote:
> Am Samstag, 3. Dezember 2005 03:58 schrieb Corey Hickey:
> > -----------------------------------------------------------------------
> >- 2. mpeg4 encoding commands for The Matrix.
> > This will end up being something like:
> > --
> > for i in $1 $2 ; do
> >   mencoder ~/dumpstream/matrix.vob -aid 128 -oac copy \
> >   -vf crop=718:356:0:60,scale=640:272 -ovc lavc -lavcopts \
> >   vcodec=mpeg4:threads=2:vbitrate=581:vratetol=1000:1:mbd=2:mv0:trell:\
> >   cbp:precmp=2:cmp=2:subcmp=2:predia=2:dia=2:preme=2:vme=5:v4mv:\
> >   vpass=$i -ofps 24000/1001
> > done
> > --
> > * qns=2, unfortunately, is prohibitively slow
> > * I'm hoping to add turbo for pass 1 with little negative effect
> > * I need to test vqcomp=0.7 or vqcomp=0.6
> > * I need to test last_pred=2
> > * I need to test NSSE (*cmp=10)
>
> What about *_mask?
>
> Doom9 does not compare PSNRs, so *_mask might help a lot. (I use
> border_mask=0.15 for my realtime TV recordings and it works very well)

I'd not recommend it: this kind of option does not improve visual
quality a heck of a lot, and when they do, it widely depends on the
kind of monitor you use.

For instance, the encodes I did when I had a CRT now look terrible on my TFT :-(

Guillaume
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