Analog Video-input and OSX

[arri]

Hi

i am still very happy with a G3Beige/333 with the (s)video input/output-ports, which i use for interactive installations, motion-tracking etc.. in my work.
For my powerbook i managed to get an iRez-capsure pcmcia-card, which provided me analog video-in on my powebook as well......
Until OSX was introduced. I love the OS, but it just doesn't support either of the digitizer boards.
The thing is that most usb or firewire devices produce a latency, which is unacceptable for my work, and becide that create extra cpu-load, which i can use well on other places.
And analog camera's are usually much cheaper..

So does anyone know a solution?
Are there perhaps drivers written for the above digitizers?
Or who can write those for me (and a lot of others)?

arri