[mythtvnz] help - very poor picture quality

[Steven Ellis]

On Thu, February 7, 2008 10:12 pm, Wade Maxfield wrote:
> Mark van Dijk wrote:
>
>> So far i've tried:
>> 1) a new SVideo cable
>> 2) dozens of different modifications to my xorg.conf
>> 3) connected a video camcorder to my TV via SVideo (works perfectly)
>>
>> Any other suggestions?  If necessary, i'll buy another video card - any
>> suggestions for cheap ones on TradeMe?  Also, am i correct in thinking
>> that DeInterlacing should be OFF as my TV is interlaced?
>>
>> Cheers
>> :-)
>>
>
> I'd suggest using 800x600 as the res to output to the TV, and turn on
> Bob Deinterlacing (I know it sounds strange - but I found that gave me a
> more stable and clearer picture - particularly with scrolling ticker
> text on sports programs)
>
> Also have you installed the proprietary nvidia drivers?
>
> And check that the sharpness settings on the TV aren't too high.  With
> my Nvidia 6200 I have a software setting for Digital Vibrance (from
> memory) that worked similarly to sharpness on the TV, and it was best to
> lower that setting to.
>
> Failing all that and you do go for a video card, a 5200 or 6200 are
> great.  Someone with more experience with the new OpenGL renderers may
> have thoughts on newer cards.

First find a 720x576 modeline, it can make a huge difference.

Next de-interlace - I also use Bob on a CRT.

Then play with the nvidia-settings tool that comes with the binary driver
to get the best balance of overscan and flicker.

Steve

--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
email   - steven at openmedia.co.nz
sales   - sales at openmedia.co.nz
support - support at openmedia.co.nz
website - http://www.openmedia.co.nz