[MPlayer-users] General video question so as to understand movie aspect

[Rickard Närström]

tisdag 05 september 2006 21:23 skrev Phil Bertram:
> Am I correct to assume that after I crop off the black bars and thus have a
> movie that is 16/9 shape (crop=688:416:16:80), the movie is still has an
> aspect of 4/3 and so aspect I should use -aspect 4/3 when encoding with
> mencoder.

Yes, -aspect dose specefie INPUT aspect. But after croping the aspect have 
changed and you get a new OUTPUT aspect of ~ 16:9.

The OUTPUT aspect can for example be spacefied with -lavcopts aspect=16/9.

So the complite line:

$ mencoder -aspect 4/3 -vf crop=688:416:16:80 -ovc lavc -oac lavc -lavcopts \ 
vcodec=...:acodec=...:aspect=16/9