[MEncoder-users] new doom9 codec comparission

Matthias Wieser mwieser at gmx.de
Sat Dec 3 15:07:23 CET 2005


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)

Regards,
  Matthias




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