[MPlayer-users] Re: LAVC-MPEG4 vs DIVX4 vs XVID??

[guardian at skip.cz]

JJ2Dogs wrote:

> So I tried Tuukka Toivonen settings with 4500bitrate and my settings:
> -sws 2 -mc 0 -ovc divx4 -divx4opts br=4500:q=5:crispness=100:key=50:pass=1
> The picture was the same.. Or all most the same.. But the divx4 is much faster... Any body can tell
> how to encrese the quality even more with divx4??
> THX to all..

Bitrate 4500 ??? With this bitrate you can leave your video in DVD format, and sizes will not be different. 
If your Source DVD has bitrate about 9800 kbits, length about 90 - 120 minutes, and this DVD was mastered 
by professionals (high quality picture), then your destination bitrate can be about 1700 kbits AND PICTURE 
MUST BE PERFECT. Any other bitrate boostings are unprofitable.

For Example: My orig.DVD "6TH Day" (With Arn.Schwarz.) have 2hours, 9800kbits, and was mastered by professionals. 

First i use formula for VBR audio making-and destin.bitrate prediction: 
cat *.vob | mencoder -oac mp3lame -lameopts vbr=3:br=112:q=0:aq=0 -aid 129 -o frameno.avi -ovc frameno -

This will generate bitrate recomendations:
Recommended video bitrate for 2x 700MB CD: xxxx kbits (i thing it is 1700 kbits.....)

Then i start first Pass:
cat *.vob | mencoder -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vhq:trell:mbd=2:v4mv:vme=4:vbitrate=1660:vpass=1 -vf crop=720:428:0:74,scale -zoom -xy 720 -o arnie.avi -

Then pass2:
cat *.vob | mencoder -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vhq:trell:mbd=2:v4mv:vme=4:vbitrate=1660:vpass=2 -vf crop=720:428:0:74,scale -zoom -xy 720 -o arnie.avi -

This will generate (with crop and rescale to 4:3 ((because original aspect stored on DVD is 16:9)) 
PERFECT 720 x 300 video, with very HIGH QUALITY, unrecognizable from my original DVD. This is FACT!

Encoding speed is not important, important is only quality.

When you have source DVD with low quality, then you will never be satisfied with 
quality of your destination video. 
GUARDIAN.