Many users don’t welcome the new rules. For one, it means that they aren’t able to. It’s one reason that many users are looking to download their YouTube videos to their hard drive now before YouTube actually decides to block accounts. Many YouTubers are also looking to make their videos private, since any hint of blood and gore could have their videos taken down – and they don’t want that.
SaveFrom.net has made a name for itself over the last few years. It can do web-based downloads, but also provides software to install and a browser extension, which it pushes. It doesn't support 4K, but few helper sites do—going to a 1,440MB WebM file is an option, but it doesn't come with audio—the only format that does is 720p MP4s. Nor can you use SaveFrom.net to make an MP3. Of course, those options are in the downloadable software.
When you copy a YouTube URL (even for a playlist), click in the WinX software to launch. You start with the "analyzer," which checks all the options. This tool also tried to default to the 1,920-by-1,080 version in MP4; I picked the 4K version (3,840 by 2,160 pixels) in WebM format, a subset of the MKV format—you can rename a .webm file to a .mkv and it'll work fine. In settings there are options to default to WebM at highest res. You can set up a number of videos to back up before you even click the download button. The 4K 575.4MB file took 1 minute and 39 seconds to download, more than double that of 4K Video Downloader.
Totally free, 5KPlayer from DearMob is a media-playing utility that is a lot more than a downloader—but it's got a heck of a downloader integrated. Promising no viruses, ads, or plug-in requirements is a good start. It is, sadly, one of the few I tested that asks for a registration of your name and email—you have to do that to get the full download function across 300+ sites. You may still use it if you don't register; I didn't and was able to download 4K vids from YouTube.
One clear example of where this works is with YouTube videos. Downloading videos from YouTube is a popular request and there are lots of tools that can do it (many that charge), so you might be surprised to learn that you can download any video from YouTube with nothing more than a browser hack. You can also download entire YouTube playlists at once.
If you want to download videos from all popular video streaming services, now you just need this free online video downloader as a single solution. It not only allows you to download online videos from YouTube, but also other websites, including Vimeo, Dailymotion, Vevo, Metacafe, LiveLeak, MyVideo, Facebook and so many more. No matter what website it may be, the performance will stay the same. There is no limitations - you can download as many videos as you want from a number of different websites.