[mythtv-users] What is temporal spatial deinterlacing, and how do I get it?

[Doug Larrick]

On Thu, 26 Feb 2009 11:25:16 +0000
Paul Gardiner <lists at glidos.net> wrote:

> John P Poet wrote:
> > Actually, Myth's BOB was awesome with my old interlaced TV.  Combine
> > it with a 540p60 modeline, and the net result was the TV thinking it
> > was being fed 1080i.  Result was the TV doing the deinterlacing --
> > which at the time it could do much better than any method Myth had.
> > 
> > This got around the problem with nVidia's drivers not being to
> > produce a correct interlaced output.
> 
> That's a lovely trick. What I don't understand is how the TV locks up
> on the correct field mod 2. You are sticking out Odd;Even;Odd;Even...
> with the timing info of each being identical. How does the TV know
> which to lock up on. If it gets out of sync, the fields will be
> spatially reversed, which should look pretty bad (at least on a
> true 1080 set).

I wrote the original bob code in MythTV.  At least on my CRT HDTV,
I suspect it is actually displaying at the requested 540p60, not
actually deinterlacing anything.

-Doug
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