Originally Posted by sambira
As predicted. Someone can't stand one aspect of the difference and therefore it is all bad.
The title of the article is "Comparison finds iTunes 1080p video nears Blu-Ray Disc quality". I reject this conclusion as the banding in the iTunes version is obvious whilst there isn't any in the blu-ray version. Banding is easily noticeable and has a highly adverse affect on perceived video quality so iTunes 1080p video does not near Blu-Ray quality.
Further, as others have pointed out this is a shoddy comparison and one made using a larger, higher-quality screen would likely reveal further issues. And, no-one has mentioned that this comparison used just one single movie file and made no mention of one aspect of video that is particularly adversely affected by low bit-rates: high-speed motion.
It is inevitable that scenes with high-contrast and high-motion will look vastly better on Blu-Ray rather than iTunes.
Note that I'm not making an argument about the worth of iTunes downloads. I'm just saying that it's a joke to pretend that the quality could possibly come close to blu-ray.