[MPlayer-users] Re: [-] Re: [-] Crop before deinterlacing OK?

[Matthias Wieser]

Hi RC,
Am Freitag, 8. Juli 2005 05:20 schrieb RC:

> You'll find that NTSC broadcasts are commonly telecined, also.  Inverse
> telecine filters don't have negative side-effects if the content is
> not telecined, so it's best to always include it.

Thanks, good to know.

> > Mplayer HTML documentation says: "[...]you must crop vertically by
> > multiples of four or else the inverse-telecine filter will not have
> > proper data." Which informations included in the TV signal are lost
> > when cropping? I think DVD has something like a soft-telecine flag
> > but TV?
>
> I was mistaken.  It seems vf_crop does pass the flags other important
> information through.
>
> However, if your objective is to save CPU cycles, putting crop before
> pullup may be pointless at best, or counter productive at worst.
> Disabling direct rendering in pullup will slow things down, not speed
> them up.  Though, it should make such a very small difference in either
> case I wouldn't bother trying...

Interesting. So you think it should be better and faster to change
-vf crop=..,pullup,denoise3d=..
to
-vf pullup,crop=..,denoise3d=..

Thanks,
  Matthias