[pmlnr]

mpv[1] can utilize youtube-dl[2] in the background for playback, so that is on-the-fly downloaded video, with no ads, played as it was local video, hw acceleration and all.

[1]: https://github.com/mpv-player/mpv

[2]: https://rg3.github.io/youtube-dl/

[catdog]

And it works not only with youtube but at plenty of other places as well.