Comment by kragen

https://github.com/yt-dlp/yt-dlp

    cd ~/tmp; yt-dlp --write-info-json --write-sub \
      --write-auto-sub --sub-lang en,es -f '[height<800]' \
      --restrict-filenames --max-downloads "$@"

also, mpv can use yt-dlp to play youtube urls

on android, https://f-droid.org/es/packages/org.schabi.newpipe/ (hopefully f-droid will renew their ssl cert before you read this comment)