Amazon Prime, like many services, is a DRM hell. It won’t go to over 480p on Firefox on Linux at my end. However, instead of a rant, I am interested in why this is happening. Say, I rented the same film from YouTube Movies(Yes, such a service exists) and the quality can toggle all the upto 1080p but the same title on Prime Video is stuck at 480p. Is it because both services use two DIFFERENT kinds of DRM?
Louis Rossman made a whole 20 min or something video on this. He payed for a netflix 4k subscription and wanted to see it in his firefox browser on a laptop connected via HDMI (because fuck smart TVs spying on you in the background) and ended up with 720p. He ended up pirating :)