Why cannot you use Mathematica Slideshow?

1. Avoid PPT, - use built-in Mathematica slideshow templates, they were recently updated and are beautiful. Advantage is - you preserve all computations and native graphics (like rotations in 3D, etc.). View this video.

2. If you must use PPT, then Export to .GIF file. I see you tried .SWF, this may work too, but you had some problems. Here are solutions with .GIF file

   • Read: Showcasing Manipulate[…] via .GIF animations
   • Read: How to include Mathematica animation in a PowerPoint presentation?
   • To slow down increase the number of produced image frames
   • Also you can try "DisplayDurations"->{t1, t2, t3, ...} to set the display durations for each frame ("AnimationDuration" for .SWF files)
   • "AnimationRepetitions" - > 1 for playing just single time and stoping (for .SWF "RepeatAnimation" -> False)

3. Exotic option is to make a CDF file, embed it into a web page and then use LiveWeb ( tutorial ) to display the webpage in PPT. Very experimental, no guarantees, I did not try it myself.

4. You can simply screen-capture and export to .GIF with free utility: LICEcap