Video

CERN

CERN Recommended embedding.

Youtube

Rienzi overture, Hochschule für Musik FRANZ LISZT, Weimar

I think ‘related’ stuff shown at end is determined by the channel. This just shows reasonable stuff, as you might expect from the owner.
No advertisments. All controls go away after a bit.

Vimeo

Better? Possibly

Who owns a Vimeo video?

Browse to https://vimeo.com/nnnnnn

More or less works on mobile if rotated to landscape.