[mythtv-users] Output to HDTV

[Jarod C. Wilson]

On Jan 3, 2004, at 06:28, Shane Warren wrote:

> 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.

Hm...

> 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've got a fair amount of overscan, but I just scale down the mythtv 
interface to fit perfectly. I don't ever use if for anything but 
mythtv, so its a non-issue for me.

> My TV will de-interlace video but only on the non progressive scan 
> inputs (svideo,composite, and one 480i component input).

I believe mine does deinterlace, even in the component inputs, since 
its a 1080i set.

> 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.

Well, I do have deinterlacing turned on in mythtv, along with jitter 
reduction and experimental A/V sync...

> 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?

1920x1080i, so I'd guess the TV might be doing some deinterlacing, 
given that its getting a signal electronically equivalent to a 1080i 
signal.

-- 
Jarod C. Wilson, RHCE

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