[MPlayer-users] flickering artifacts

Alain Barthélemy cassandre at bartydeux.be
Mon Sep 20 09:42:01 CEST 2004

Le vendredi 17 septembre 2004, 19:01:56 ou environ Ulrich Schweitzer <us- at gmx.de> a écrit:
> On Friday 17 September 2004 18:16, Wu-Kung Sun wrote:
> > nice -n 19 mencoder dvd://1 -aid 128 -oac copy -ovc
> > lavc -lavcopts
> > vcodec=mpeg4:v4mv:vhq:vqmin=2:trell:vbitrate=830:vpass=(1||2)
> > -vf crop=710:480:6:0,scale=640:-2,hqdn3d=2:1:2,harddup
> > -noodml -o ("/dev/null"||movie.avi)
> Your scale option is most likely the problem. You end up with an image 
> height of 274 which is not divisible by 16. Because of that you get ugly 
> macro blocks on the edge of the frame. Both width and height should 
> always be divisible by 16. 
> > Some things I don't understand. The image size turned
> > out to be 480x274 instead of 640xnnn.  
> Are you sure the frame size is 480x274? Or does mplayer just rescale it to 
> that size because of wrong aspect info (I had that problem once)? Try 
> passing -noaspect to mplayer. If this solves the problem, pass 
> -force-avi-aspect <aspect> to mencoder.
> And one more thing: Encoding directly from DVD can be hard on the drive. 
> If you have enough space on your hard disc, you should consider ripping 
> with mplayer dvd://1 -dumpstream and encoding from the resulting file.
> Ulrich
> -- 

"... hard on the drive ...". Can you explain a little more? It is the DVD drive
I suppose. Why does it give the "drive" more strain than just reading?

Alain Barthélemy
cassandre at bartydeux.be
Linux User #315631

More information about the MPlayer-users mailing list