[MPlayer-users] Confused about deinterlacing and scaling

[D Richard Felker III]

On Thu, Jul 29, 2004 at 10:33:37AM -0700, * wrote:
> --- Jason Tackaberry <tack at sault.org> wrote:
> > The "best" deinterlacer is a topic for heated discussion, I've found. :)
> > Each deinterlacer artifacts in different ways, and the "best" one seems
> > to be more a matter of perception.  pp=lb creates ghosting, but I tend
> > to prefer it over the others.  I think most people agree however that
> > you should avoid pp=fd.
> > 
> Sorry what about pp=l5?  I see from the source that it is
> LOWPASS5_DEINT_FILTER but I'm not sure how that's different from pp=lb.
> It seems to take a little longer and give slightly lower PSNR?

You're measuring the wrong PSNR. pp=lb is more blurry so of course
it's going to encode more easily (thus encoded video more closely
matches the output of lb, thus "higher psnr"). pp=l5 is the same thing
as pp=lb followed by a simple sharpening filter.

Rich