YouTube now makes it easy to upload your video’s from Google+. You can not miss the large g+ import button on the right side of that page. More than one video can be uploaded simultaneously.
But you are wondering: “Who uses Google+?” Forget about Google+ for a moment. The real value of this new import function is that it simplifies the way you upload video’s from Android or IOS devices, simply by activating the Google Auto Backup feature.