No, you cannot download thumbnails from personal or unlisted video clips making use of our thumbnail grabber. Our YouTube thumbnail downloader only works with publicly out there films. Non-public or unlisted video clips need appropriate authentication and that is further than the scope of this thumbnail extractor tool. Our mission https://youtube-thumbnail-downloa55431.theideasblog.com/38956047/the-basic-principles-of-youtube-thumbnail-downloader