[MPlayer-users] BUGREPORT -vf cropdetect does not work

[John Brown]

Guillaume POIRIER wrote:
>
>Hi,
>
>On 6/27/07, John Brown <johnbrown105 at hotmail.com> wrote:
> > I ran the following command:
> >
> > mplayer.exe -v c:/dvd/build/01.mpg -vf cropdetect
>
>try with -vf cropdetect,scale
>

OK, that worked, but why is scale necessary now, and what is the
meaning of scale without parameters?

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