[mythtv] RFC: Expanded playgroup settings

[Markus Schulz]

Am Montag, 3. Dezember 2007 schrieb Kevin Kuphal:
> This is a short patch that I'm working on currently that adds the
> ability to set the Video Scan method in a Playgroup in order to, for
> example, force interlacing for stations that broadcast a mix of
> progressive and interlaced frames which throws off the Auto-detector.

i don't like this way cause of too many variables i need to configure 
for something which the player should decide.

In my last patch (trac ticket #4268) i've changed the behaviour a bit 
for all "double process" deinterlacers. Now each frame will be passed 
to the deinterlacer (whether or not it was an interlaced frame). This 
was needed to preserve the frame historie for the deinterlacer. This 
way you have no problems with stations which broadcasts a mix of 
interlaced and progressive frames(all of them are passed to the deint 
and interlaced will be deinterlaced).

Now there is another problem, badly flagged frames (flagged progressive 
but is interlaced). The frame will be passed to the deint but he 
decides not to deinterlace. I would prefer here a variable (in struct 
frame) which enforce deinterlacing. For adaptive deinterlacers there is 
nearly no variation in quality if he deinterlace progressive frames 
too. 
To preserve a user decision we can enable/disable the enforce flag 
inside video profiles for each profile. Then you can disable it if you 
don't like the behaviour.
Comments?

-- 
Markus Schulz