Embedding Microsoft Stream Videos on rise or storyline

Yes you can embed the videos from Stream into Storyline using the embed code. 

Insert > Video > Video from Website > paste in the embed code.

Just an FYI - I have had nothing but issues with this type of embed. Even if I set the Player size, it still doesn't display as set. Its super annoying and the video doesn't stay where you placed it on the slide, it moves into weird places so we are now linking via a web object from our SharePoint.