Hello @ErinB008 ,
Videos cannot be uploaded to the library, nor can they be embedded into emails. To include a video in your email, you'll need to use a video hosting site or cloud drive for hosting and linking. If your video is hosted on YouTube or Vimeo, the video block can be used for thumbnail generation and linking. Otherwise you can use text, image, or button links for including videos.
For more info:
Inserting videos into emails
Text links
Image links
Button links
... View more
