Okay, answer a few questions first:
1. Do you want the video embedded into a page, or do you want it on its own page?
2. What is the file extension of the movie? I.E. AVI, MOV, etc
3. Do you want it to stream? A 4 gig video that's an hour long probably won't stream very well, and you'd have to encode it differently to compress it.
(Streaming is like YouTube, versus just downloading the file then watching it)