We need to be able to embed links to "external" videos in our knowledge articles. We have tried several suggestions from the community and have followed the steps from "Embed videos in HTML fields" but we still are not successful in getting videos to stay and play when we add them to an article. The video will show up in the article and play but once we submit and look at the article the video is not there.
<iframe src="https://www.youtube.com/embed/QZkOXfYdipI" width="560" height="315"></iframe>
Follow the directions documented in Embed videos in HTML fields
<iframe width="560" height="315" src="https://www.youtube.com/embed/QZkOXfYdipI" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>