If your video 🎥 or audio 🎧 doesn't seem to be working, try switching to a different web browser.
In general, we have found that Google Chrome works well for our video content.
If you're already using Google Chrome and still can't hear and/or see the videos, try clearing your browser cache. This often does the trick.
How to Clear Your Browser Cache
1. Press Ctrl-Shift-Delete (Windows) or Command-Shift-Delete (Mac)
2. If this doesn't work, here's a helpful article we've found: Clearing Your Cache
If none of these solutions are working, try accessing the material on a different device or using a different internet connection.