I'm using Devuan Beowulf (~= Debian Buster), freshly installed.
I can play Youtube.com videos fine using Firefox, but if I try them in Chromium, it keeps shown the loading animation (the circle with the gradient repeating itself), and at some point adds "if playback doesn't begin shortly, please restart your device".
Restarting does not work. The comment sections also won't load. On the other hand, many/most/all non-Youtube videos load fine, e.g. Vimeo.
I'm not using any manually-installed software.
What could be the cause; how can I fix/work around this issue?