Achim<br><br>Under Windows you might try the video cards made under the name Osprey. There is at least a 4 input one on a single PCI card. Whatever devices you get for video capture make sure they have DirectShow drivers. The GEM DirectShow code is not as efficient as other applications because we have to change the pixel format DirectShow gives us into what we use for the pix_ objects. You might want to investigate using a dual core/CPU machine and two instances of Pd to spread the load of all 8 inputs. I think 8 inputs is probably a stretch, but maybe you can get away with reduced resolution (320x240) to lower the load. Be careful that the scaling is not done on the CPU since that could actually be slower than using 640x480.
<br><br>cgc<br><br><div><span class="gmail_quote">On 6/6/06, <b class="gmail_sendername">wollscheid</b> <<a href="mailto:wollscheid@tfm.uni-frankfurt.de">wollscheid@tfm.uni-frankfurt.de</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi list -<br>does anyone have experience in running several gem-motion trackings<br>alongside each other?<br>Meaning what I intend to do is to use several (up to 8) camaras to track<br>different areas of a larger space. Guess this is not possible with USB
<br>Cameras - so I'll have to use Video-cameras/ Video Cards anayway. Can<br>GEM actualle differetiate between different video cards and operate them<br>at the same time?<br>Cheers!<br>Achim<br><br><br>_______________________________________________
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