[MPlayer-users] Deinterlace-plugins that do not destroy fps?

[D Richard Felker III]

On Mon, Feb 03, 2003 at 09:33:18PM +0200, Pasi Kärkkäinen wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> 
> Hello!
> 
> Is there any work going on to get better deinterlacing plugins to Mplayer?
> 
> I'd like to be able to view interlaced material (DVD's, tv-card etc) at the full
> framerate (50/60fps)..
> 
> Many of the good deinterlacing techniques are shown at the
> http://www.100fps.com.
> 
> With deinterlacing methods like "Combination of Weave+Progressive Scan" you
> get the full fps and great picture quality.. 
> 
> Quote from 100fps.com: "How can you expect to have excellent results when
> you convert 50 fields per second (=50 snapshots per second) to 25 snapshots
> per second?"
> 
> Good NTSC MPEG-2 clip available for testing is here:
> http://telija.net/~pk/FlickerBox.zip (originally from ftp.demodvd.org, but
> it seems to be down now..)
> 
> When played at 30 fps (like mplayer does) the picture is not correct.
> 
> Does support of these deinterlacing methods require big changes to
> mplayer?
> 
> Please comment..

Most of the stuff you've read on 100fps.com sounds like flamebait.
Movies are 24fps to begin with (sped up to 25 fps for PAL, or
telecined for NTSC), so there's no sense in trying to get 50/60 fps
out of them. Methods like this could be good for made-for-television
content, but you can have "excellent results" at 25/30 fps as well.

For now, try using the various deinterlace filters and see what kinda
results you can get. Use pp=md, lb, ci, or fd and see which one does
best. Eventually mplayer should support the sort of frame rate
doubling you're talking about, but it's difficult to do with the
current architecture so don't expect it anytime soon.

Rich