[mythtv-users] WOT: Moving video around in a PC without using overlay

[Frank Phillips]

On Wed, Mar 2, 2011 at 10:31 PM, Jay Ashworth <jra at baylink.com> wrote:

> ----- Original Message -----
> > From: "Raymond Wagner" <raymond at wagnerrp.com>
>
> > If that's the case, you would be best off using OpenGL. Still
> > technically in software, but you're using shader language and your
> > graphics card to do the conversion and scaling, something it is
> > explicitly designed to be good at.
>
> We (I) may have fallen off the cart here:
>
> I'm planning to take between 8 and 16 640x480-grabbed NTSC signals,
> and scale *all of them* down to smaller pixel counts, and then position
> them in various places on one (or 2) 1920x1080 HD-VGA outputs (which will
> then go HDMI to a monitor).  It sounds like you're suggesting that I can
> use OpenGL to hand the full-size grabs to the video card and let *it*
> scale and position into its output buffer; did I read that right?
>
> Cause that would be handy.  :-)  Would I end up with enough PCI bandwidth
> to pull that off?  And where *should* I have been asking these questions,
> anyway?
>
> Cheers,
> -- jra
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I may be way off because I only understand half of what you're talking
about, but it reminded me of this gstreamer pipeline I found when
researching security systems:
http://blogs.gnome.org/halfline/2009/10/11/video-4-way-split-screen-gstreamer-pipeline/

This is postprocessing four videos into a single composed video, but maybe
something similar to capture and output?
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