[MPlayer-dev-eng] [PATCH] Convolution deinterlacer

[D Richard Felker III]

On Sat, Mar 29, 2003 at 09:40:57PM +0100, Arpi wrote:
> Hi,
> 
> > suggestions on how to make it work better. I keep thinking it's ok,
> > then finding material that it breaks on, then fixing it, then finding
> > that my fix made it oversensitive and that it broke other stuff, etc.
> 
> :)
> just like my mpeg demuxer was :)
> when i fixed it to handle a given file it break for some others and so on.
> 
> btw your detc still not work well for the
> apollo_440_-_lost_in_space(jason_nevis_lunar_landing).vob
> (i'll upload it once, it's huge and adsl sucks at uploading)
> 
> that file is keep switching to and back from hard inverse telecine and
> 24fps-encoded video, and the clip itself contains 24fps video mixed with
> 30fps text (and other osd-like stuff) so it's quite hard (if not impossible)
> to deinterlace properly...

Well, something like -vop pp=md will give tolerable output, but it's
quite lossy... A more intelligent filter like this could do a fairly
good job, but you'd still have frames that are 'mostly duplicate'
except for a change in the 30 fps part (text or whatever). Then you'd
have to either leave the duplicates (choppy look) or find a way to
identify the almost-duplicates and drop them...

Rich