WordPress makes it easy to share video from sites like YouTube by including them in the context of your post or webpage.
1. Copy (highlight the text and CTRL-C on a PC, Apple-C on a Mac) the URL of a video from a site (ex: YouTube). If copying from YouTube, copy the full URL with “youtube.com” in it, not a shortened version or the embed code.
2. While editing a Page or Post, click the place within the text you want the video to appear
3. Paste the YouTube URL (not the embed code, just the “youtube.com” URL itself) in the Text tab of the Body field (not the Visual tab)
Once you publish the post (or preview it) you should see your embedded video.