That permitted searches for terms and channels (though not subtitle text within channel AFAIK), for music specifically, and compiliation of either temporary or saved playlists, with the option to play through a full selection of videos. It also offered either full-video or audio-only playback.
There have been earlier tools which permitted command-line / terminal access to Youtube, one of the best being mps-youtube:
<https://github.com/mps-youtube/mps-youtube>
That permitted searches for terms and channels (though not subtitle text within channel AFAIK), for music specifically, and compiliation of either temporary or saved playlists, with the option to play through a full selection of videos. It also offered either full-video or audio-only playback.
Google killed it by throttling API-key access.
Discussed previously: <https://news.ycombinator.com/item?id=32919545> <https://news.ycombinator.com/item?id=28571421>