Intro
I've made a lot of funny videos (as in "off", not "haha") and every time I needed clips from youtube, which was all the time, I would copy and paste the url into one of those cutty websites that has a slightly different url each time and hope my ad block service was enough to get me thru to the other side without too many new tabs opening up.
However, recently I watched a show called 500000000 years button that absolutely blew me away. I wanted to share it with my brother; the first three episodes* were available on youtube, but the rest is only available on Amazon Prime, which he somehow lives without.
I did some investigations to see if I could purchase the show and share it with him but that isn't an option with Amazon. And that got me thinking, I wanted to have a copy of the show. I wanted to have access to it despite my streaming subscription statuses.
I remember seeing an easy-breezy downloader called Downie from the makers SetApp when I was deep into my utility productivity phase. It has a sleek interface and a one-time purchase fee. But even though Im rich, Im still cheap, so I went to download the first three episodes on YT using my usual methods. But then I hit a wall- the show is in Japanese with multi-language captions available, of which English was only one. Meaning I could download the show, but that wasn't going to come with the captions.
Vague memories and limited research led me to a solution: yt-dlp
*The fourth is where it kicks off though and the fifth had me screaming
yt-dlp
PROS
it's free and local
works on thousands of websites besides youtube
can download audio and video in hella formats
CONS
requires using TerminaL.
Wait, come back! Don't worry, that's what this guide is for! You don't need to learn anything, I promise. This guide is a one and done guide to installing your own local youtube downloader that can also embed subtitles.
? What do you mean "local"? I mean you don't need to use a web browser, you just open up 
Terminal and type in the url plus a command and it automagically delivers the video to your 
Downloads folder.
Overview
WHO THIS GUIDE IS FOR Idiots like myself that are intimidated by anything command-line, who have never opened Terminal and think of anything that requires accessing github as a "damn shame" since it's impossible to tell what you're supposed to do.
WHAT THIS GUIDE WILL DO
Have you feeling like a damn hero and L33t Hax0r. With just a handful of command-lines we are going to prep Terminal, install Homebrew (which you can use for all kinds of other shit, but never will), install yt-dlp, and finally ffmpeg, which is the thing that adds the subtitles to the video. Once we have everything set up, all you will have to do is copy-paste a single line of text, insert a link, and you will have high-quality downloads all the livelong day.
