I'm currently able to paste a link such as https://i.imgur.com/NxXNXXN.gif and sesh will embed it correctly as a looping gif for the event. It would however be even better if sesh supported links with "gifv" or "mp4" extensions to save bandwidth. I've tried pasting these types of links in Discord and they are handled perfectly fine natively, I think it's just a matter of sesh whitelisting them. Thanks for all your hard work!