WonderFox HD Video Converter Factory Pro enables you to download long YouTube videos like a 2-hour movie or longer ones from websites in a short time. Besides, if you are concerned about the large size video would take up much space on your device, you can compress the downloaded huge video into a smaller one while keeping the original high quality with the advanced 5X lossless compression ratio. In addition to downloading videos from YouTube, you are allowed to download audio from YouTube and download YouTube channel or playlist as well. Next, let us begin the detailed operation on long YouTube video downloading.