No, You can not download thumbnails from private or unlisted video clips working with our thumbnail grabber. Our YouTube thumbnail downloader only operates with publicly available video clips. Private or unlisted films need suitable authentication which happens to be beyond the scope of the thumbnail extractor Instrument. Our mission is https://simonmvslm.59bloggers.com/38852905/helping-the-others-realize-the-advantages-of-youtube-thumbnail-downloader