To embed a video into D2L
1. Go to AVON and authenticate if needed from off-campus. Find the video you want. Click on the Embed/Link button below the window. Copy the embed code, which should start with <iframe src=...
2. Go to the D2L content page you want and click Edit HTML at the bottom.
3. Click on the farthest -left button, "Insert Stuff" 
4. Click on Enter Embed Code and paste the code from Step 1 in the box. It should look something like this:
5. Click Next. You may get an error warning like this:
But it is OK to choose Allow, and then you should be able to preview the video in the window.
6. Choose Insert to finish.
