Short videos can fit really well into a presentation. The audio track can be a problem.
  1. Bombastic loud music can feel out of tone, especially if the sound was not set up correctly (too loud, too soft)
  2. A spoken voice over might feel out of tone with your overall presentation
  3. It is hard to edit/change video audio, maybe your message has changed over the past month, the voice over of your video has not
A good option can be to run a silent video, where you the presenter, gives live commentary in a voice the audience already has gotten used to, perfectly blended into your overall story.

If you liked this post, why not subscribe to daily updates about presentation design via email? Just blog posts, no spam, or you can follow Jan on Twitter to never miss a thing.