No Speaker audio in random videos

Windows 10/64 bit V-1909 (Build 18363.1139)
I'm having an issue with random Twitter videos not playing audio through my speakers.
I noticed this in a forum, Someone embedded a Twitter vid in a post, Naturally I click play to watch it.
No audio (Speakers 5.1).
Hmm, Weirdness, Maybe there actually was none (Audio), But then why all the comments referring to the subject at hand?
So I click through to Twitter and attempt to play it from there, Still no audio.
Scroll down a bit and find another vid, click it... Audio works fine (Speakers 5.1)
Go back to original video and of course try it again, Nothing.
Plug in my headphones, Ahhhhh, There is indeed audio attached to the video.
Unplug headphones, No sound from speakers.
ANY ideas?
Is Mozilla working in conjunction w/Twitt to apply censorship to anything THEY deem "inaccurate"?