Some UDEMY videos won't play regardless of the browser

On my 2021 MacBook M1 Pro with Fedora Asahi Linux 40, there is a strange phenomenon happening: I am watching a course on UDEMY, and some videos fail to play while others play without any issues. The problem seems to be independent of the browser used: Chromium, Firefox, Vivaldi, Brave… in all of them, the same videos won’t play (they show a loading gif continuously), while other videos play fine.

If I use my other laptop with Fedora 40 Workstation, ALL videos play without any problems.

Any idea what might be going on?"*