I found this thread while searching for a reason as to why any embedded Instagram videos refuse to play after a day or so of being embedded.
Prime example, the video in post # 30 here no longer plays 
For a more public example, an entire thread of Instagram videos on our Discourse have also stopped working.
Should I raise this as a Discourse bug in a new thread?
Or, and what’s far more likely, is this a known Instagram issue?