1080p (Full HD) and 4K (Ultra HD) differ primarily in pixel count — 4K has roughly four times as many pixels as 1080p, producing sharper detail on larger screens.
When the difference is most noticeable
- Larger screens (55 inches and up).
- Sitting closer to the screen.
- Content originally produced in 4K rather than upscaled.
Bandwidth requirements
4K needs significantly more bandwidth than 1080p — see our internet speed guide for exact figures. If your connection can't sustain it consistently, 1080p often looks more stable overall.
Common mistake
Forcing 4K on a marginal connection. A stable 1080p stream generally looks better than a 4K stream that buffers or drops quality repeatedly.
Check what quality tiers are included on our Pricing page.