[MEncoder-users] Filter large dots

[Rich Felker]

On Sun, Apr 23, 2006 at 06:37:11PM +0200, Marco wrote:
> > hqdn3d should work.  I suspect you might need a fairly large "time"
> > value to remove such film effects.
> 
> I tried, even with very high values (eg. hqdn3d=0:0:20).
> Dots are smaller, but always present. The movie is damaged, instead.
> 
> On 4/23/06, Rich Felker <dalias at aerifal.cx> wrote:
> > On Fri, Apr 21, 2006 at 07:40:38PM +0200, Marco wrote:
> > What you really want is a sort of median denoiser. Unfortunately
> > mplayer/mencoder does not have such a filter. You could try:
> Yes, I think that median filtering is needed. Maybe, it could be
> possible to apply it only on dots which are not present in the next or
> the previous frame (with position tolerance).
> 
> >
> > -vf pp=md,rotate=1,pp=md,rotate=2
> My MPlayer dev-CVS-060322-18:40-4.0.3 doesn't find the pp fitler.

Umm, it's been there since the very beginning. Are you using shared
libavcodec or something broken like that? I can't think of what would
disable pp but maybe that's one guess.

Rich