Yes, follow the steps below to complete you question:
1. use Moyea FLV downloder to download the YouTueb flv file.
2. Use Moyea flv to video converter to convert youtube flv to video file, as flv format file does not be supported by powerpoint file directly.
3. open the powerpoint file.
4. click insert menu> Movies and Sounds> Movie from file> browse and double-click to insert into powerpoint file.
Then you can view the youtube file in a PowerPoint presentation.





.gif)