Some people are getting errors when they try to play videos or such embedded in tweets embedded in posts. They play properly on twitter's website.
That is a very good twitter. Ravens are awesome.
I especially like their voices. Nevermind how good they are at mimicry.
It loads the tweet and the preview frame and the play button for the video player in the tweet, but when I click it to play it gives a "the media could not be played" error message.
This is in Firefox 57.0.2 (64-bit) in Windows 10 for me. Not everyone seems to be having the issue. I started noticing it happening a few days ago.