[CentOS] Video capture under CentOS

I recently purchased a Diamond VC500 video capture device that runs on
the USB.  It has some interesting issues under Windoze, but I was
wondering:

I did a google for video catpreu and linux and most of what I found
either said it can't be done or the software that did/does it is
obsolete.

Can anyone point me in a better direction (and which way)?

Thanks.

mhr