There are two methods described.
Option 1 (Recommended)
Navigate to your course in eLC.
Select "Content".
Navigate to a module.
Select "Existing Activities".
Next to the recording you would like to upload, select “Embed”.
Select "Save and Close".
Option 2 (Use this if you need to adjust the HTML page in which the video lives)
Navigate to your course in eLC.
Select "Content".
Navigate to a module.
Select "Upload/Create".
From the drop-down, select "Create a File" (even if it’s something you already created.)
Enter a title for the recording and select click the small arrow button for "Insert Stuff" button.
...
Select "My Media" , to show your library of uploaded recordings will be displayed, which may take a few seconds to load.
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Select “Embed” next Next to the recording you would like to upload.
Select "Save and Close"
Option 2
Navigate to your course in eLC
Select "Content"
Navigate to a module
Select "Existing Activities"
Select “Embed” next to the recording you would like to upload, click the button for “Embed”. This may take several seconds.
Click “Insert”.
Give the item a title.
Toggle the button for “Visibility” on or off.
Select "Save and Close".