[mythtv-users] Output to HDTV

[Shane Warren]

Jarod C. Wilson wrote:

>
> Both DVD and TV look quite good on my system. I'm feeding a 960x540p 
> signal through an Audio Authority 9A60 VGA to Component Video adapter. 
> Perhaps it is something related to your video card. I'm using a GF4MX 
> (nForce2 onboard video, actually). What are you using?
>
Actually I'm using an onboard GF4MX on a nForce2 board too.  I was also 
using a 9A60 adapter to get 480p on another TV and it was having similar 
issues, plus that TV had serious overscan problems so much that it 
prompted me to finally buy a new TV.   I wasn't actually all that 
surprised when the new TV showed interlacing effects, it seems like if 
you play back an interlaced stream onto a  progressive scan output you 
will always see the effect unless you take it out w/ either a) software, 
or b) your TV takes it out.  

My TV will de-interlace video but only on the non progressive scan 
inputs (svideo,composite, and one 480i component input).  I'm totally 
surprised you don't see it, I would think this would always be an issue 
unless the source stream wasn't interlaced or the output device was 
de-interlacing it for you. 

 Is there a possibility your TV/monitor/projector is doing the 
de-interlacing for you (seems unlikely since you mentioned running in 
540p mode, which is somewhat equivalent to 1080i right, hmm actually 
maybe thats why maybe your TV always de-interlaces 1080i signals which 
it thinks your signal is, just a thought).  What is the native 
resolution of your output device? 

On my set (DLP rear projection) the native resolution is 1280x720p, 
everything else gets scaled to that.  I guess I could try outputting at 
540p and see if my TV de-interlaces that since its native output is 
720p, but I think I would loose some picture quality in the translation too.