[MPlayer-users] 2pass encoding... faster first pass?

[D Richard Felker III]

On Sat, Apr 09, 2005 at 04:06:52AM +0930, Mark Williams (MWP) wrote:
> Greetings all,
> 
> Most of the time i use mencoder options similar to:
> 
> LAVC="vcodec=mpeg4:vqmin=2:vqmax=16:vmax_b_frames=2:vme=4:mbd=2:v4mv:keyint=250:vlelim=-4:vcelim=7:vstrict=0:mbcmp=3:precmp=0:cmp=0:subcmp=0:predia=1:dia=1:trell:aspect=4/3:vbitrate=$BITRATE"
> 
> VF="crop=$CROPXY,scale=$SCALEXY,pp=vb/hb/dr,hqdn3d"
> 
> Which gives VERY slow encoding, but great quality.
> 
> When doing 2pass video encodings can i use faster settings for the first pass,
> then the above for the second pass?
> Or do i need to use the same settings for each pass?

You can use faster -lavcopts, but I would advise against changing
filters at all. Also, vlelim=-4:vcelim=7 probably lower quality, and
same for vmax_b_frames=2 (use at most 1, imo, and maybe 0).

Rich