Publit.io is a video streaming service that was a major 2019 deal on AppSumo, thus many Sumolings could serve up embedded videos to your chats and landing pages using video hosted on Publit.io
They have their own configurable media player widgets that could make embedding videos more doable
https://publit.io/community/blog/publishing-your-video-with-publitio-video-player-for-website