[MPlayer-users] vop questions

Yan Seiner yan at cardinalengineering.com
Mon Apr 7 13:02:02 CEST 2003

What order are vop filters processed in?

It seems to me that crop and scale are processed from back to front,

-vop crop=x:y:z:t,scale=a:b

the scaling will be done first and cropping second, whereas

-vop scale=a:b,crop=z:y:z:t

the cropping is done before the scaling.

If that is the case, wouldn't it make more sense to apply the de-noise
and de-interlace filters before the scaling, e.g.

-vop scale=a:b,crop=z:y:z:t,pp=tn/lb

or even 

-vop scale=a:b,pp=tn/lb,crop=z:y:z:t

instead of at the end of the filter process, as shown in the docs?

Or am I missing something?


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