[throwaway77770]

For some reason, the embedded videos seem to break in Firefox Private Browsing (128esr). This had me stumped for a while until I tried it in a normal not-private window and it worked.

[qrush]

Curious - what OS? (I work at Wistia!)

[TapamN]

I'm using Firefox 139.0.4 canonical-002 Snap on Xubuntu, and the videos don't play for me. Even when not using private browsing, even when I disable uBlock Origin, even when I disable Privacy Badger (and, of course, I've set NoScript to enable JS for the tab.)

[fleebee]

Do you have tracking protection on "Strict"? The player only started working for me after changing it to "Standard".

[TapamN]

Oh, yeah, I am. I forgot about that setting. Switching Standard allows the videos to work for me, while Privacy Badger and uBlock Origin are enabled.

[throwaway77770]

Linux - Debian 12 to be precise.