@pnutzh4x0r For what it's worth, playing YouTube video kinda works here on Epiphany 47.2 on Fedora, and on the "Epiphany technology preview" flatpak version, but you might be encountering https://bugs.webkit.org/show_bug.cgi?id=289194, or https://bugs.webkit.org/show_bug.cgi?id=245852