What does it mean when YouTube downloader says enter url address?

When a YouTube downloader prompts you to "enter URL address," it means that you need to provide the web link of the specific YouTube video you wish to download. This URL typically starts with "YouTube.com/watch?v="">https://www.YouTube.com/watch?v=" followed by a unique video identifier. Once you input the URL, the downloader can retrieve the video's content for you to save locally.