When a new video on YouTube feed of a channel or a user that you uploaded to YouTube by following you can receive notifications in real time is a small extension for Google Chrome.
The first thing you have to do, naturally, your YouTube account linked to the extension. Once that is done, Chrome- an icon in the address bar on the right will tell you how many videos you have not seen yet. To watch them, just click on the name or the thumbnail displayed in the preview and you will be delivered directly to the video.
YouTube feeds, is ideal for anyone with a YouTube account since it is a new extension that will keep up to date all kinds of videos as they are added to your favorite channel.