There is a company called Prime Image who was supporting the Amiga. They specialize in video equipments. I know of 3 products they made for the Amiga:
PCB - a single time base corrector card (
photo)
SC/PCB - a TBC with standards conversion (eg. NTSC to PAL)
Passport 4000 - a solution for integrating the Video Toaster in PAL environment
Read more here
amiga.resource.cx/exp/search.pl?company=prime and on their website
www.primeimageinc.com.