What's the best format to import in to iMovie?

Question

Okay, here is the situation, I have a lengthy Keynote presentation which I plan to export via QuickTime so it can be imported in to iMovie in order to do voice-overs. The question I have is what the best format is to use to export from Keynote in order to import in to iMovie. I am obviously looking for the format which is the smoothest, doesn't lose any quality, and will look clear once imported in to iMovie. Also, there is no reason to use H.264 since size during the transfer doesn't really matter to me, besides, H.264 seems to be somewhat jerky with Keynote exports (or maybe it's just my computer) as I am using some of the graphics intensive transitions and effects.
Also, I know that when you send movies directly from Keynote to iDVD or from iMovie to iDVD, it uses a format which is directly compatible and there is no conversion that takes place, is there a format which will work this way from Keynote to iMovie or does it always have to do the conversion.
Finally, the other thing you should know is that I created the presentation in Keynote using 1280x720 in order to achieve the true widescreen aspect ratio. Now, I am NOT looking to keep this in HD, once I import it in to iMovie, I only need the standard DV Widescreen resolution since I will eventually transfer it to iDVD to burn it as a widescreen DVD. So, I would also appreciate some sort of input as to whether I should export the QuickTime file out of Keynote as the full 1280x720 and then let iMovie do the down-sampling, or should I export it directly out of Keynote using the standard definition widescreen resolution? Please, I would appreciate ANY help on this!!!

Answer 1

Thanks for your suggestion Bruce, however I found another way as well. I finally found that using the full resolution (1280x720) with Apple Intermediate Codec @ 60FPS turns the best results (for a relatively low disk usage). I finally went with the 60 frames per second because I was having problems getting a somewhat jerky output using Current or 30FPS in any format. I realize that iDVD reduces the FPS eventually, but it seems to be perfect when I take that route. Although the jerkiness isn't noticeable on most effects and transitions, if you use the newer transitions like Reflection or Doorway, you will definitely notice a less than perfect playback.
I know that I said that file size didn't matter, but I decided using uncompressed video was just too large, I think the file size was like 25-50GB or something like that. I took forever to import in to iMovie, so I quit with that route.
I really appreciate the Garageband suggestion, that was by far the best way to go. I never really tried using the new GarageBand in iLife '06 so I didn't even realize that it had movie scoring—what a GREAT feature! I definitely should have recorded directly in to GarageBand rather than in iMovie, something is just not right with iMovie's audio handling. Anyway, thanks for the help!