How to Display Mixed Content in Firefox
By default, Mozilla Firefox prevents insecure content from running or displaying right away. This means it will only show secure content unless you change the default security settings.
If you are expecting to see media content on a page but only see a blank space, take the following steps to allow insecure items to run or be displayed.
Here’s what users will see in the “missing video” scenario described above:
See the Which browsers does Webcourses@UCF support? Canvas Guide for more browser and privacy setting information.