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Tommy Penner commented on Auto play on page load + Auto stop when player is out of sight due scrolling.
Corner Magazine commented on Auto play on page load + Auto stop when player is out of sight due scrolling.
These guys have done just this, if anyone's interested: https://thetravelcorporation.com/
It's a nice thought but I think any function like that on an external site will have to implemented on the site itself rather than in the player.