[MPlayer-users] Re: Video quality

[D Richard Felker III]

On Tue, Jun 10, 2003 at 11:13:30PM -0400, Chris wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> On Tue, Jun 10, 2003 at 04:35:11PM -0700, Corey Hickey wrote:
> > 
> > My personal favorite settings, that result in good quality and take
> > forever to encode :) are below, but be sure to replace the crop and
> > scale values with something appropriate for your particular DVD.
> > 
> > for i in 1 2 ; do mencoder -dvd 1 -vop scale=720:304,crop=720:359:0:58 \
> > -sws 1 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=800:vhq:v4mv:trell:\
> > precmp=3:cmp=3:subcmp=3:vmax_b_frames=1:qpel:vlelim=-2:vcelim=7:\
> > lumi_mask=0.05:naq:vqcomp=0.7:mbcmp=2:psnr:vpass=$i -oac copy -ofps \
> > 23.976 -o pass$i.avi ; done
> 
> I notice you use -oac copy.  Do you do the frameno.avi thing beforehand
> as well, or something else?

Frameno/pass0 is totally useless if you're using -oac copy. The only
point of it is to measure the audio bitrate so you know how much space
you have left for video. Actually I hope G2's mencoder *doesn't* have
this feature, since so many people misuse it and get bad results
because they don't understand how it works...

Rich