[MEncoder-users] two pass encoding with pullup

[Winterbird]

D Richard Felker III wrote:

>On Tue, Apr 05, 2005 at 07:07:34AM +0200, Winterbird wrote:
>  
>
>>the video looks good when I watch it in mplayer, but I'm beginning to
>>think that pullup doesn't always drop the same frames, and that's why
>>the video becomes strange... I guess I'll just have to experiment a
>>little to see if I can get it working with pullup or any other ivtc...
>>Thanks for the help.
>>    
>>
>
>Are you following the directions that say you MUST ALWAYS use the
>softskip filter with pullup for encoding? If you're going to ask
>questions here you REALLY need to show us the full exact command lines
>you're using at the very least.
>
>Rich
>  
>
yes, sorry, I just wanted to know if it was a common problem... Anyway,
first pass:

mencoder -noidx -nosound -noaspect dvd://1 -chapter 16-20 -ovc lavc -vf
pullup,softskip,phase,hqdn3d=12:0:10,unsharp=c7x7:0.5:l7x7:0.5,crop=704:464:6:8,scale=640:-3
-ofps 24000/1001 -lavcopts
qns=3:cmp=2:subcmp=6:preme=2:predia=3:dia=3:last_pred=3:vmax_b_frames=1:mv0:cbp:qprd:trell:preme=2:keyint=300:v4mv:mbd=2:vqscale=2:vpass=1
-o /dev/null

second pass:

mencoder -noidx -nosound -noaspect dvd://1 -chapter 16-20 -ovc lavc -vf
pullup,softskip,phase,hqdn3d=12:0:10,unsharp=c7x7:0.5:l7x7:0.5,crop=704:464:6:8,scale=640:-3
-ofps 24000/1001 -lavcopts
qns=3:cmp=2:subcmp=6:preme=2:predia=3:dia=3:last_pred=3:vmax_b_frames=1:mv0:cbp:qprd:trell:preme=2:keyint=300:v4mv:mbd=2:vbitrate=1145:vpass=2
-o finished.avi

the difference is only that I added qns=3 on the second pass, and the
bitrate (vbitrate=1145 instead of vqscale=2).