Teachers have asked about how to embed a YouTube video into their Prezi presentations. There are instructions in the Prezi manual under the learn tab at Prezi.com. The method essentially requires two steps:1) downloading the video from YouTube in the correct format 2) embedding into the Prezi.
Downloading from YouTube and saving as an FLV file
There a number of ways to do this. Here is just one that is straightforward and sure to work.
Step #1 Go to YouTube and find the video required. Copy the URL of that video page.
Step #2 Go to http://keepvid.com Paste the URL in the menubar. Click Download.
Step #3 Download the FLV file
Step #4 Lastly, embedding the video into your Prezi is straightforward- Use Media then File as you would insert a picture.