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

[Matthias Wieser]

Am Dienstag, 26. Juli 2005 21:47 schrieb Rich Felker:
> On Tue, Jul 26, 2005 at 09:05:48PM +0200, Matthias Wieser wrote:
> > > and then pp=l5 will also result in worse psnr during
> > > compression,
> >
> > No, pp=l5 is nearer to the original, so psnr is higher.
>
> It's pointless to compare psnr unless you compare the final psnr AFTER
> encoding versus the original picture..

If the image prior to the encoding is already bad, the codec won't improve 
it.

> > For progressive content I just did the comparison. pp=l5 results in
> > much higher psnr between the original frames and the frames from the
> > resulting video.
>
> What tool do you use to measure psnr there?

pnmpsnr


      Matthias