<br><br><div class="gmail_quote">On Wed, Mar 2, 2011 at 10:31 PM, Jay Ashworth <span dir="ltr"><<a href="mailto:jra@baylink.com">jra@baylink.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div class="im">----- Original Message -----<br>
> From: "Raymond Wagner" <<a href="mailto:raymond@wagnerrp.com">raymond@wagnerrp.com</a>><br>
<br>
</div><div class="im">> If that's the case, you would be best off using OpenGL. Still<br>
> technically in software, but you're using shader language and your<br>
> graphics card to do the conversion and scaling, something it is<br>
> explicitly designed to be good at.<br>
<br>
</div>We (I) may have fallen off the cart here:<br>
<br>
I'm planning to take between 8 and 16 640x480-grabbed NTSC signals,<br>
and scale *all of them* down to smaller pixel counts, and then position<br>
them in various places on one (or 2) 1920x1080 HD-VGA outputs (which will<br>
then go HDMI to a monitor). It sounds like you're suggesting that I can<br>
use OpenGL to hand the full-size grabs to the video card and let *it*<br>
scale and position into its output buffer; did I read that right?<br>
<br>
Cause that would be handy. :-) Would I end up with enough PCI bandwidth<br>
to pull that off? And where *should* I have been asking these questions,<br>
anyway?<br>
<br>
Cheers,<br>
-- jra<br>
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</div></div></blockquote></div><br>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:<br><a href="http://blogs.gnome.org/halfline/2009/10/11/video-4-way-split-screen-gstreamer-pipeline/">http://blogs.gnome.org/halfline/2009/10/11/video-4-way-split-screen-gstreamer-pipeline/</a><br>
<br>This is postprocessing four videos into a single composed video, but maybe something similar to capture and output?<br>