Help : Preloading Imported Movies (QT, MOV formats)

Hello guys,

I got two questions in my mind. The first one is which is a better format for importing a movie? Should I use QUICKTIME or other formats?

Now the second one is a little bit confusing. Let’s say I have successfully imported any movie to my FLA file, I was wondering if their is a way to PRELOAD half of the entire movie before actually playing it, that way, audience won’t wait for a very long time if needed.

Thank you so much