In 2010 it's all digital in digital out, be it from DVD/AVI source or HD camera input. Nothing really gets used much in the oldskool analogue method,
Really? do you work in a live production environment? A pro level setup will be able to ingest video in ANY format. Analog, Digital, any file any codec. Also lots of folks will plugin component analog source and SDI or various signals. That was always the NewTek workflow or pipeline and I thing any FPGA iteration of the legacy Amiga Flyer should adopt the same idea.
Heck if they were able to adapt the Cassablanca series to more moder spec an FPGA FLyer would be do-able.