Which animations will work on Keynote export to PowerPoint

It might be that the fonts aren't being embedded into the PDF, that would cause them to not render correctly on a computer that did not have the fonts installed and Adobe Reader may be faking the look of fonts that it doesn't have. Open the PDF in Acrobat on your PC and in the "File" menu select "Properties..." and then click on the "Fonts" tab. Each font listed should have a remark like "Embedded" or "Embedded Subset".

If that is the case, you may have to change your PDF creation settings (not sure how you are creating the PDFs, so I'm no help there) to make sure that all fonts are embedded.

I just tried it with a QuickTime movie and was able to run the exported .ppt in PowerPoint as well. But this is probably no guarantee that it will work in all cases given the multitude of video formats, codecs, drivers etc. So in your case you probably get the best results if you

• start with a specific video format/codec on the Mac side (QuickTime and either MPEG4 or H.264 would be my first choice)
• do a test run yourself, maybe involving various target PCs (if this is a scenario you have to be able to work with)
• stick to the setup once you have proven it to work