This is for videos that are not in Quizzes. This is most likely due to the fact that this is a Flash video, which all teachers have been required to remove from their courses as Flash will no longer be supported as of 2020.
If the user is using Chrome
If you are using Chrome, next to the web address shown at the top left-side of the page, click the words "Not secure."
Click "Site settings."
Allow / Always Activate
To the right of Flash, click the drop-down arrow and select "Allow" or "Always Activate."
If the video still won't play, try using Mozilla Firefox as your browser when working on your course. You can download Firefox from http://getfirefox.com.
Let the student know that we are going to alert the teacher to the issue with the video. Let Becky know of the issue, and she will reach out to the teacher to have them convert the video to an mp4. Close ticket.