So you want to download videos from Youtube and save them locally? There are a couple of options for doing this. Technically it’s not difficult but you do need to review Youtube’s policy on this.
Option 1: Use www.keepvid.com to copy/paste the youtube URL and click “download”. It will generate links that you can right-click and save. It does require a java applet, but KeepVid is safe.
Option 2: Use Google Chrome (or Firefox) with the Tampermonkey and “Download Video as MP4” script. This is how I do it and makes it VERY easy once setup.
Tampermonkey for Chrome:
https://chrome.google.com/webstore/detail/tampermonkey/dhdgffkkebhmkfjojejmpbldmpobfkfo
Download YouTube Videos as MP4 :
https://greasyfork.org/en/scripts/1317-download-youtube-videos-as-mp4
Hope that helps. I’d rather post good safe information than people google something, install malicious software, and have to call someone like me to fix it 😉