I think you may need to use a dedicated security camera card, such as an Avermedia or Geovision card. The reason is the capture rate needs to be fairly high and some kind of video compression is usually done to keep the file sizes small. The software that comes with these cards is pretty good and can keep up with 4 or more cameras simultaneously at 15 fps, since the card is doing the compression. www.apexcctv.com stocks both of these cards, and the capture software comes with it. I have used both cards and the lowest-performance ones are capable of keeping up recording in real time. The only difficulty is they have separate video and audio inputs, so USB may or may not be supported.
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by: astaecPosted on 2009-06-04 at 10:37:24ID: 24549371
Intriguing! Some thoughts... and something I'm also exploring although you're ahead of the experience game. Have you tried FIREWIRE instead? Better, faster and likely a solution that I'm exploring. In the interim, some links that "may" shed some light.
Firewire compatible cameras "may" be the key for you .. http://www.alliedvisiontec .com/avt-p roducts/ca meras.html or http://www.alliedvisiontec .com/
Some other links - http://www.everythingusb.c om/jaxstre am_jaxcam. html - http://forums.lavag.org/Ac quiring-vi deo-from-m ultiple-US B-cameras- t10318.htm l
Listening when time permits, wishing you great success. ":0) Asta