If you're willing to do more about the offline YouTube videos, you can try the its advanced version - MacX Video Converter Pro. Comparing with MacX YouTube Downloader, It not only allows you to download YouTube SD/HD/4K videos on Mac, but also convert them to all general-purpose formats, and common devices profiles, edit the downloaded YouTube videos, record screen videos from both desktop and iPhone, or capture videos with webcam. Besides, if you have DVD sources, you can also take advantages of this program to rip DVD to any formats and devices, or make a backup of your DVD movies without any quality loss.
You just install the downloaded software, and then you put the URL into the link and click to download. It’s that simple, and you’ll be able to get started listening and watching your favorite videos again in no time, and without having to get online again. That makes it great for when you’re traveling anywhere where you won’t have an internet connection for a long period of time. For those who haven’t used a YouTube channel downloader before, this one is going to make it super simple, and you’ll wonder why you haven’t done it before.
Original quality, without re-encoding. Download HD video of 1080P, 26K aK, 4K, nd 8K. Support most poplular audio or video websites including Youtube, Twitter, Vimeo, Facebook, Dailymotion, SoundCloud, Instagram, Liveleak, Break, Imgur, TED, CNN, Mashable, 1TV, reddit, IMDb, ESPN, Flickr, Bandcamp, 9gag, VK.com, Izlesene, TV.com, Tiktok, Odnoklassniki, Izlesene, Udemy, ...
Normally it takes around 1 second to extract the downloading url for videos like Youtube, for some videos it make take longer, but no more than 5 seconds. If the extracting process takes more than 5 seconds, you better check the settings of your browser, sometimes it is due to the extension like "uBlock Origin". The speed will be greatly enhanced after disabling such extensions. Otherwise, just clear the cookies of the browser, the problem will be solved most of the times.

The next step is to open a command prompt by typing “cmd”  into the Windows search box and hitting enter. This opens up a command-line interface. Right-click in the command line interface box and hit ctrl-v to paste in the command. You’ll notice that the command is huge and unwieldy – that’s why we copied and pasted it from the browser interface, rather than typing it in from scratch.

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