Video input
Please clarify "standard camera". Modern TVs and camcorders have many different video connections such as composite video, S-Video, component video, firewire, and various analog and digital high-definition links.
If you are using a standard-definition format, is it NTSC or PAL?
Which FPGA (DSP?) board do you have? If it doesn't have any suitable ADCs, then you will need to add one (or several) for analog video. You will probably want a DAC (perhaps several) to output similar video.