[MEncoder-users] filter order

Grozdan microchip at telenet.be
Sat Jan 10 22:29:16 CET 2009


On Saturday 10 January 2009 22:20:49 Matyas Sustik wrote:
> Hi All,
>
> The HTML doc says: "deinterlacing should be done after cropping [1] and
> before scaling."  (The footnote does not seem to alter this either.)
>
> However, I have seen quite a few encoding scripts where cropping was done
> before deinterlacing.  I was doing it according to the doc until now and I
> just wanted to make sure that it was the right thing to do.

yes, it is correct and preferable to crop first and then deinterlace

>
> Also the man page description of the framestep filter does not indicate why
> one would use that filter.  I am curious what encoding job it is suitable
> for?  (I did not see a use for it in my encodes, am I missing out on
> something?)

it can be used as a simple FPS converter, eg if you have 50fps content and 
want to bring it back to 25fps, you can use framestep=2

>
> Thanks,
> Matyas
> -
> Every hardware eventually breaks.  Every software eventually works.
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Regards

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