We all know that we should back up our video files on a regular basis and how disruptive and even devastating it can be to lose our entire library of video content. Even with the best of intentions, hard drives can break or we can fall out of the routine of saving our footage in the cloud. Luckily, any video files uploaded in the past to YouTube can easily be salvaged by the channel owner as the site keeps a copy of all your uploaded video content. There are two ways of retrieving these files either #1) go to video manager and download the MP4 although you can only download 2 videos per hour this way or #2) download the entire archive. We show you both options in this week’s Creators Tip.
Step 1:   Free download YouTube video downloader on Mac iMac Pro, Macbook Air/Pro or Mac Mini and install it, copy the URL of the video page. find a video you'd like to save offline, then paste the URL and click "analyze" to load the YouTube video details. Or click "paste & analyze" button to automatically detect the YouTube video opened in browse.
The same as you do to download any other videos. You just need to choose the 1080p or 4k format in the video result section, sometimes it is in the "video only" section that without sound, then you have to download the audio file (M4A) in the same result section, then you can load the video file and audio files together on your computer using the video playing software, such as VLC. You also can combine the video and audio files by using ffmpeg. Some youtube video does not have HD format originally, in such case, you definitely can not download any HD format video. 

Digiarty's multi-lingual WinX claims to allow downloads from 300+ sites—including adult sites. Perhaps the biggest selling point of all is the claim that "There is no malware, adware, spyware or virus. 100% clean." The latest version has a much improved interface as well. There are ads, though—on install, I was asked to upgrade to its $29.90 product for Windows and macOS called VideoProc, which does everything that WinX does, but for 1,000+ sites, plus offers some editing for high-end 4K/UHD video.
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.
The same as above. You just need to copy the URL, then paste the URL into the search box of Distill Video (http://distillvideo.com) and press “Start” button. After waiting almost 1-2 seconds, the video section showed, choose your preferred format and right click the "Download" button, then click "Save link as..." to download the video or audio into your computer or phone. So you also can call it "Reddit Video Downloader".
I keep copies of all my uploaded videos to YouTube on an external hard drive but most people don't do this. You run the risk of losing all your hard work should YouTube terminate your account. Google Drive makes it easy to backup all the current videos on your YouTube channel. It also makes video management very simple. You can preview your videos within Google Drive or download them at any time.

Important news: Recently, YouTube has rolled out a series of changes to retard the download from the video site. As a result, many downloader tools such as 4K video downloader, Clipgrab, Realplayer and more encountered errors, such as "Error. Unknown site", "Can't parse this link. Please send it to our support and we'll check it" and more, but MacX YouTube Downloader successfully parses the YT link and makes downloading as easy as possible.
When downloading, the program does try to hide some things. Paste in the URL for a YouTube video and the analysis engine runs and shows only a few download options. Click the Gear icon, then the Show All button and you'll see more—including ability to get a 4K 3,840-by-2,160 file in WebM format. The 577MB WebM test download took about 6.75 minutes. Grabbing playlists was possible, but you must adjust download settings one video at a time. The confusing interface makes it hard to go back to the other videos in the playlist.
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