How to embed youtube videos into express presentations mode

Hi! Unfortunately right now you can't embed YT or Vimeo videos into presentations on Adobe Express. 

If you want the embed feature in presentations you can go to Adobe Express Uservoice to upvote the feature request here: https://adobeexpress.uservoice.com/forums/951181-adobe-express/suggestions/48150917-option-to-embed-web-hosted-video-in-presentation-m 

However, in the webpage feature of Adobe Express you can embed videos, so as a work around you could use this feature to make your presentation.