Literally Using ffmpeg to download m3u8 videos these days. Whenever they need a header i proxy that url via nginx
Yt-dlp ftw!
An app called ClipGrab works well enough for me:
ytp-dl for everything
Synology’s download manager - which is an amalgamation of tools, but for video it’s ytp-dl
It works great.
https://deturl.com/ or rather when you type in a URL is will link to another 10 tools https://deturl.com/www.youtube.com/watch?v=EVBsypHzF3U
Take a look at www.downloadhelper.net
Jdownloader
Downie on Mac
I pay for YouTube premium and Nebula which both let me download videos. I use it to save videos for when I travel. I also sometimes live off grid with a Starlink and I'll download videos so I can turn Starlink off to save power.