[mythtv-users] PVR350 TVOUT

Tortise tortise at paradise.net.nz
Tue Jan 19 01:55:09 UTC 2010


----- Original Message ----- 
From: "Brian Wood" <beww at beww.org>
To: "Discussion about mythtv" <mythtv-users at mythtv.org>
Sent: Tuesday, January 19, 2010 2:25 PM
Subject: Re: [mythtv-users] PVR350 TVOUT


On Monday 18 January 2010 06:12:50 pm Tortise wrote:

> I'd like to get composite SD out of a 150 or 350.  If I have a NVIDIA 8500
>  feeding component out (at 720p) playing HD H264 files, is there some way
>  to take a feed from that and also route it to send it out of the PVR-x50
>  composite TV out?  I imagine some downscaling would also be necessary.

> Only the 350 can output composite SD (or anything else for that matter).

OK thanks.  (I have one on the shelf)

> So I think I misunderstand what you are trying to do, are you trying to get
simultaneous HD out of the 8500 and composite SD out of something else for the
same program I mean.

Yes, I'm looking to get simultaneous same program, HD over component, and SD over composite.

>If so, I don't think a PVR-anything is the right tool to use, I'd use a
standard video card, using Twinview or whatever they call it these days.

One NVIDIA card won't do simultaneous component and composite out - the connecters are either /  or, but not both.

If I used two cards, one with component out and a second with composite out I can use Twin view (as I read the readme documentation 
each card becomes necessarily dedicated to that use.)

I currently use two X servers on the 8500, one feeding component to the TV and the second feeding a desktop (VGA) in a 2nd X 
session.

Because of the limitation to reproduce all that I'd need (!) 3 video cards, one for component, one for composite and a 3rd for the 
desktop.    (If my TV took VGA or DVI in would help...)

I've not found out how I'd sync two of those cards, does anyone know?

Because of the above, siphoning the TV out thru a PVR-350 composite out seems worth further exploration, all be it with some 
downscaling.  It might not be possible though as the HD video would need to traverse the PCI bus into the PVR-350 in some useable 
form... 



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