[Pooge]

yt-dlp is great if on desktop.

[manwithaplan]

It works perfectly fine under Termux, too.

[deafpolygon]

I do this, then send it to VLC on mobile.

[jraph]

Note that there are great UIs around yt-dlp on mobile, for instance Seal, if it can be of any help.

https://f-droid.org/packages/com.junkfood.seal/