[mythtv-users] Any hope for 1080i content at 1080i with nVidia?

Seth Daniel mythtv.org at sethdaniel.org
Fri Aug 24 18:35:11 UTC 2007

On Fri, Aug 24, 2007 at 11:29:46AM -0400, Tom Dexter wrote:
> If I try to use any of the built-in 1080i modes I only get the top 540 lines 
> of the screen as well.  I think this bug is discussed here:
> http://www.nvnews.net/vbulletin/showthread.php?t=90084

yeah, I was involved in that thread.  I have it bookmarked for when I
need to show people all the issues involved with this particular bug.

> ...and they are apparently aware of it.  I wonder if by chance in addressing 
> this, they may happen to actually fix interlacing.

Well, they've been aware of it for close to a year now.  They don't
publish their priorities so I wouldn't hold your breath.

> It kills me to hear that the 8xxx drivers actually handle 1080i correctly.  
> My frontend has only PCI-E and, as far as I can see, there are no chipsets 
> available on PCI-E that are supported by 8xxx drivers.  I'm not about to 
> replace my frontend machine because nVidia hasn't addressed this.

I just responded with a caveat for this scenario.  At least in my case I
had to disable XV sync to vblank and it causes tearing...even when using
the 8xxx driver.

> For the time being, I've settled on using 1080i output (with a custom mode 
> line) and using Viktor's patch here:
> http://svn.mythtv.org/trac/ticket/2903
> ...to allow bob deinterlacing, and that made a huge difference...not as good 
> as it would look with the driver working correctly and no de-interlacing at 
> all, but very good.  

I'll try this.  Any idea if it will correctly apply to recent SVN?

seth / @sethdaniel.org
Vegetables are what food eats.
Fruit are vegetables that fool you by tasting good.
Fish are fast moving vegetables.
Mushrooms are what grows on vegetables when food's done with them.

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