Questions and Answers:
Question: Do the speed buttons work inside Keynote?
Answer: Unfortunately no. Any interactive QuickTime movie embedded inside Keynote looses all interactivity. If you would like to see that changed, please send your feeback to Keynote product management.
Question: Do the speed buttons work inside PowerPoint?
Answer: Unfortunately they do not. We would recomend creating a hyperlink to your QuickTime movies. That way they get opened in QuickTime player, which gives you much greater control over your movies.
If you have additional questions about QT Speed Buttons please contact us.