Could youtube-dl the video then redirect the browser to a locally-served (locally from the pi-hole device, that is) page embedding the video, provided you've go

Could youtube-dl the video then redirect the browser to a locally-served (locally from the pi-hole device, that is) page embedding the video, provided you've got the disk space to cache it and don't mind waiting a bit for the video to download (admittedly a lot of caveats here, but could work for many people). That'd actually be a better experience for most sites youtube-dl supports, I'd think, not just Youtube.