The quickest way to add a single video is a single import. In WordPress, open Videos → Add New.

Paste a YouTube video URL (or just the video ID) and click Search video. When the video is found, Video Hub takes you straight to the post edit screen with the title and content already filled in from YouTube — based on your content import settings for titles and descriptions.
If category importing is enabled, the video’s YouTube categories are assigned to the new post automatically too.
Need to add many videos at once instead? See manual bulk import, or set up an automatic import.