[mythtv-users] Asus Pundit and Interlaced Output, part III :)

[Will Dormann]

OK, It's good to see that I'm not the only one!    

Anyway, the SIS driver also has an option for reducing flicker.   I have 
turned this off to see how it would affect my interlaced output.   It 
didn't seem to help the video much, though I could definately see an 
increase of flicker in horizontal lines in X before mythfrontend starts up.

A PVR250 system does indeed allow you to deinterlace the TV output.   
True, the capture is done via hardware, but once that's done you've got 
an interlaced MPEG2 file.   Playback is done totally by software, just 
as it is with RTJPEG and MPEG-4.    (well, maybe playback isn't done in 
the exact same method, but it is software playback).   So if the 
Deinterlace playback option is enabled in MythTV, then it does 
deinterlace the video.

As I mentioned in a previous post, I did a capture via:   cat 
/dev/video0 > /tmp/test.mpg
and I would play it back with mplayer
I figure, this way I would eliminate as many variables as possible.    
I've tried different resolutions, flicker options, overscan, and all 
that but have yet to find a solution that looks *good*.   The most 
noticeable problem areas were panning scenes. (try pausing)   Since the 
above test uses MythTV in no way, then I guess it's not at fault.  
:)      But I think the topic is still relevant to this discussion list.

I currently have deinterlacing enabled in MythTV and it has good 
results.  The question is whether or not I am losing motion smoothness 
as a result of this, compared to "true" interlaced output.

-WD