Video
You can add a video to an article from the following sources:
Direct link.
YouTube — copy the video page URL or click Share and copy the short link.
Google Drive — click Share on the file, then choose Anyone with the link. Click Copy link.
Dropbox — click Share via Dropbox on the file and copy the link.
To display a video from a source, click the video icon → in the editing panel and paste the link to it.