Xbox One, Blu-Ray and degraded (grainy) picture quality

Yes, it is a step-down in quality, though making adjustments can help. But then, it's an in-built blu-ray player so the quality was never going to be quite as a good as a standalone, dedicated player. My blu-ray player is worth £100 (managed to snag it for
£50 during a sale) and the picture quality is considerably better than what the Xbox One can produce, although it's worth noting I'm a bit of a movie nutter and a lot of people probably won't even notice the difference.

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Still, it's a good way of people getting on-board with blu-ray films and the like.

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I'll be continuing to use my stand-alone player

I only ever tried one dvd. Never again.

Picture quality was horrible like it wasnt even upscaled. And lip lync was off. Blu rays are fine though

I think blu-ray has better picture quality over digital.i saw on the news the other night that netflix crops their movies.

The Blu-rays that say Mastered in 4K will have a better overall picture than those that aren't. I don't see that they cost anymore, at least from Amazon. Sony previously did this with a line of pristine masters of DVD's some years ago. Here is the marketing
speak:

The Blu-ray “Mastered in 4K” collection will set a new standard for Blu-ray HD picture and sound, creating the ultimate 1080p home entertainment experience. Created from the highest quality 4K source materials with new expanded color*, consumers can enjoy
a brilliant picture with exquisite detail using their existing Blu-ray player or PlayStation®3. The Blu-ray “Mastered in 4K” collection is optimized so that 4K Ultra HD TV owners can take full advantage of the new 4K upscaling technology, delivering an outstanding
near-4K experience. “Mastered in 4K” Blu-rays also work with all 1080p HDTVs for spectacular high definition picture and sound.

*Expanded color requires xvYCC-compatible TV and Blu-ray player

Why “Mastered in 4K” Blu-ray?

• Get the best Blu-ray picture possible, mastered from 4K source materials

• Push your TV to the limit with a high bitrate digital transfer for an immersive visual experience

• Ideal solution for new 4K TV owners and great for Blu-ray collectors

Notice the "near 4K" phrase? In any case they should look better when played back on equipment that will utilize the high bitrate of the disc.

Works OK with my joey except it seems the picture quality is degraded.