I have been using the 4k youtube downloader for many months. I am a college professor at a small college teaching pre-licensure nursing students and use videos often to tech students content. I have not been able to find a good YouTube download software product that meets my needs and at a price point, we can afford (we are on a limited budget). This software is so helpful. I use it to download MP4 files and had the capability to adjust the quality to save space and even save it to different formats