Hey @Andrew.Walters 

Thank you so much for reaching out about sending videos in SMS messages.

At this time we do not have capabilities for videos to be sent in SMS messages without using a link. Embedding a video within an SMS message (not using a link) has a high probability of bounces as phone providers often view these as spam. We do hope to increase our functionality for video use in SMS messages over time, so feel free to check back for any updates! In the meantime, I would suggest using a link as a workaround. 

Hope this helps and thank you for being a member for being a member of the Klaviyo Community!
 

Thanks, @stephen.trumble. I appreciate the insight!