@jonah-birnberg
Ok, do a test for me!
let LINK = "wix:video://v1/2bc498_50ffd6aeedf746bc810da7c7450c1ee0/Trimmed Test Video.mov#posterUri=2bc498_50ffd6aeedf746bc810da7c7450c1ee0f001.jpg&posterWidth=1068&posterHeight=604"
wix:video://${LINK}
Try to setup this link manualy to your BUTTON!
Does it work?