The slide approach will give the best quality but if you have any sort of animations or moves, etc. these would be lost.
It may depend on the size of your PPT project and the size of your FC project.
We have exported wmv files out of PPT(11x17)1280x720) and then converted to ProRes via flip4mac. Greatest video ever? no. But it is usually better than most SD video you can "acquire" from the web. There will be caveats to full screen HD in FC from PPT.
Other factors would be font size/design elements and title safe. 8 pt fonts usually aren't the first choice for video but could look great in PPT. If you ignore title safe you may have to shrink your slides/video to ensure they are title safe or put a full screen slide behind it. A lot of times PPT is not designed with video in mind.
if your final product is a PowerPoint file, edit the voice over in FCP so that you have a sound file for each page in the PowerPoint. There is no need to import anything from the PowerPoint to do this.
Edit the audio into separate clips for each page of the presentation. Export to one of the file types that PowerPoint will accept and that you have the ability to export from in Quicktime:
A powerpoint file is different than a movie file because it is customly/ interactivly ran.
The suggestion to “save as movie” unter the “file movie” may work to get “video” we can work with but it might be a terrible pixelated resolution ~(640x480) compared to the beautiful “1440x1080” of todays HD projects.
Apples to Oranges:
To follow my old analogy, to get a soda out of the machine we need to convert a dollar in to four quarters. In one way, yes they are both the same but in another way the dollar bill cannot go into the machine and alow us to get what we want out of it… just as a powerpoint presentation cant go into a video editing program.
“Powerpoint to video”
“Powerpoint to Final Cut Pro”
“Powerpoint to FCPX”