This is a "help" question to explain how to embed a video in your question or answer. Please feel free to use the Answer space to test this functionality out!
You can embed a Youtube video in your question, simply by placing a link to the Youtube video directly in the answer as open text.
The link has to be to https://youtube.com/[yourvideo]; it does not work with some URL shorteners.
As a reminder, videos are welcome in questions or answers, but they should not be the only source of information in that question or answer. If you have a question about something in the video, please explain in words what is happening; and if you have an answer that relies on a video to show something, please also explain in words as best you can. Videos may be taken down at any time, and videos are not accessible for some users.