It’s free to download for Windows, Mac, and Linux, and is verified virus-free. The most reliable of these apps that I’ve come across is 4K Video Downloader for desktop.
There happen to be several third-party apps that let you download YouTube videos, in full, at their highest resolution possible-including 4K and 8K. That doesn’t mean it’s impossible to download 4K YouTube videos to watch offline, though. YouTube creators can download MP4 versions of their uploaded videos, but only at 720p resolution, max. Youtube Premium members ($12/month) can save videos and music to play offline on their phones, but only at a maximum 1080p resolution. Unfortunately, you can’t watch these videos offline in full resolution using YouTube’s standard options. We’re rapidly entering the era of 4K as the standard resolution, and new 4K content is available on YouTube every day.
