Transfer Keynote media to imovie-clip image issues

You must set the pixels size in Keynote to match the pixel dimentions for the type of project in iMovie. As an example, NTSC DV has pixel dimensions of 720 x 480, this is the dimentions you enter in Keynote:

Slide Size: Inspector > Document > Document > Slide Size

Exporting: File > Export > Quicktime > Format > Custom

I already saved it thru Quicktime, (.mov) is there a way to save as or convert it?

No.

Set up slide size and then export from Keynote with 1920 x 1080 or 1280 x 720 pixels using Prorez CODEC in custom settings

If you need to match the Keynote export with other clips in iMovie you will need to get that information in the iMovie project settings information inspector.

Going on the web I see that Prores Codec is a download from Apple, correct?

Prorez is built in to the Mac operating system, no need to download.

If I understand this right with that I can correct the Keystone clip to a correct pixel size.

No.

You specify to use Prores when making the settings when exporting from Keynote. You must set the correct pixel size of the slides before creating the presentation in Keynote, see below:

the complete workflow will be:

1. in Keynote, start a new presentation; File New
2. set the slide size; to 1280 x 720 pixels in: Inspector > Document > Document > Slide Size

3. create the presentation; by adding shapes, text and effects.

4. export to Prores; File > Export > Quicktime > Format > Custom

5. Import the exported Quicktime file into iMovie

(click on any of the screen shots to enlage)