What File Type is Best To Import Into iMovie '08?

[karsen]

I'm got a burned DVD of a company training class that I need to rip into a format that works well with iMovie. I need to get this video into iMovie so I can add titles and do some basic editing.

I'm using Handbrake and every time I rip the DVD and create a file it is grayed out in iMovie's import and is not selectable.

I've searched Google and not come up with anything, any help is very appreciated.