I'm in the US and twitter videos don't play for me. I see what looks like a video control when I view the post, when I click it, it throws up a modal log in/sign in dialog. No way to view the video while logged out.
I don't have a twitter or x account. I clicked the link, a log in modal popped up, I dismissed it, then was able to play the video. Firefox on iPhone if it matters.
