Originally Posted by TheMoose
Engadget on HD download quality
George Ou over on Zdnet wrote an excellent piece outlining why those too-good-to-be-true HD downloads we see in Xbox 360, ABC.com and even Apple TV are a bit bogus. He points out that while these services deliver on their 720p resolution promises, the encoded bitrates are so low, compressing the data to such small proportions, that the image within the said resolution has inadequate fidelity. And though we have some major reservations regarding Ou's theory, it's tough to entirely disagree when you see the cold, hard numbers:
480i DVD movies: 5 to 8 mbps
HD Steaming: 1.5 to 4 mbps
XBOX360 Dloads: 6.8 mbps
HD DVD: 28 mbps (max)
Blu-ray: 40 mbps (max)
Uncompressed 1080p video at 60fps: 3000 mbps
Note: Apple reports HD movies will be about 5GB, which would represent a bitrate more on par with DVD standards.
Yea I'll stick with my Blu-Ray thank you!
I've watched a 360 720p movie and compared it side by side to the 1080p BD version. In 95% of the viewing you couldn't tell the difference. Visually.
Audio on the other hand BD wins hands down.
The ammount of time it takes to download a movie however is hard to deal with. Comcast's 1080p On Demand is the answer. Plus they say that DD True HD will be added at some point in 2008.