[MPlayer-users] Comparison of different deinterlace and denoise filters

[D Richard Felker III]

On Wed, Oct 22, 2003 at 12:54:10AM +0200, Matthias Wieser wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Am Dienstag, 21. Oktober 2003 23:32 schrieb D Richard Felker III:
> 
> > To see the error, you need to eliminate the luma channel and see if
> > the chroma is interlaced or not. Using the eq filter with contrast=0
> > can do this for you. I don't know any way to do it in gimp.
> 
> mplayer -vo png -vf eq=0:-100,scale -nosound  ../Video-16.10.-1230Uhr.avi 
> worked
> 
> Strange: when recorded without anything, it's interlaced (two pixel wide 
> lines: two from frame one, two from frame 2, two from frame one,...), but 
> produced the mentioned artifacts.

Yes, this is the only correct way to store interlaced video in 4:2:0
format. Unfortunately it's displayed totally wrong, but that's life...
:(

Once you have interlaced 4:2:0 video like this, you can display it
properly (still interlaced) with -vf ilpack. And of course it's ready
for deinterlacing or inverse telecine.

Interlaced video is such a mess... :(

> When recorded with YUY2, chroma is normally interlaced (one pixel wide 
> lines).

What format are you recording it in? Could you tell me the command
lines that gave you the different results?

Rich