[mythtv-users] TV out size

Michael Skaastrup Michael at Skaastrup.dk
Thu Feb 21 14:17:11 UTC 2008


tor, 21 02 2008 kl. 13:45 +0000, skrev Steve Smith:

> 
> 
> 
> On 21/02/2008, Tim Phipps <mythtv-users at phipps-hutton.freeserve.co.uk>
> wrote: 
> 
>         Michael Skaastrup wrote:
>         > There is some overscan in live tv which I expected but the
>         image is not
>         > perfectly centered and OSD menu is slightly off screen to
>         the left.
>         >
>         > Can this be remedied?
>         
>         I don't think you can fix the image centering apart from
>         adjusting the
>         TV set (don't do it, there's high voltage in there). I think
>         you may be
>         able to edit the OSD theme to move it around, but I've not
>         tried it so I
>         don't know the details.
>         
>         >>  That's going to have a de-interlacer running even in
>         720x576Noscale so
>         >>  you might have to live with a bit of smearing with
>         interlaced action.
>         >>  Films might be OK.
>         >
>         > You are rigth on. I get a little smearing or blurriness on
>         action. Can i
>         > solve this by de-interlacing output?
>         
>         I doubt it. De-interlacing always compromises the picture
>         quality, doing
>         it twice will probably make it worse. Since your TV-out is
>         50Hz
>         interlaced and you TV-set is 100Hz (interlaced?) you will have
>         to have a
>         deinterlacer of some sort. I think the only way to not have
>         motion smear
>         is to have MythTV use onefield de-interlace. But then you lose
>         half the
>         vertical resolution. It won't get any better with
>         LCD/plasma/OLED either
>         since they're all progressive technologies and the broadcast
>         stuff looks
>         like sticking with interlaced. Anyone know if projectors can
>         do interlaced?
>         
>         Cheers,
>         Tim.
>         
>         _______________________________________________
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>         mythtv-users at mythtv.org
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> 
> Michael,
>  
> Seeing as you are in Europe, your best bet for the BEST quality
> picture is going to be a RGB to SCART lead.
> MUCH better than composite video, and you get to design the output
> mode yourself, so no black bars etc...

Hi Steve

I saw this on the wiki earlier but this might end up being a commercial
product and therefore I am searching for the least complicated fix. I am
limited to EPIA only right now.

If composite is rejected by project managers I will have to look into
that.

But thanks for bringing it to my attention.

-Michael

>  
> See the Wiki for details....
>  
> Cheers
>  
> Steve
> 
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