I've done some research already, but I'm in the process of reviewing my data.

I was working an a video and had some scenes completed, when a nice Hard Drive crashed wiped it all out.

I'm about to start all over again...

Initialy I was working in DVD format 720x480  but with HD DVD becoming main stream... I'm considering doing the video in 1080i or 1080p

There is also Frame Rate to consider.... NTSC DVD's are something like. 29.97 or 30 Frames Per Second.

When you upload a video to Youtube it gets downgraded to 15 or 20 frames per second to meet with Flash Media standards.

I'm typing this in a hurry since I have to leave soon.. but I will come back some more concrete data.

I read somewhere, about  Rendering lets say 60 to 96 Frames Per second and than using some Video multiplexing tools, to do some processing.

Giving the video that Silky smooth Movie like look and feel.