Firefox won't play embedded H.264 video
Firefox 86.0.1 (64-bit) on Ubuntu 20.04 LTS won't play H.264 videos, falsely claiming they are corrupt - but they are not, see example here which works okay on Google Chrome.
What could be the issue?
Firefox 86.0.1 (64-bit) on Ubuntu 20.04 LTS won't play H.264 videos, falsely claiming they are corrupt - but they are not, see [https://github.com/Mudlet/Mudlet/pull/5022 example here] which works okay on Google Chrome.
What could be the issue?
