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, just like nobody uses analogue cameras to take pictures or processes sound using analogue tech.
What we could use a bounty for is AVI type streamed video AND audio sync standard resurrection ie if someone could actually write a program to do something with the official Anim+SLA format (mode 2-streamed video AND streamed audio) This is basically like AVI for OCS/ECS/AGA machines which nobody ever did anything with or even remembers now.