Why no "DEEP COLOR" ??

[almy]

Most new hi-def displays support it. Most (if not all) Blu-Ray players output it. HDMI 1.3 will carry it. All that we need are the so-encoded discs. Also knows an "48 bit RGB" and "xvYCC color" this is supposed to provide a marked improvement over current hi-def picture quality. Supposedly, studios were reluctant to allow it as part of their (so far) hi-def DVDs until there was more adequate copy protection. Doesn't BD+ provide that? If Blu-Ray studios were to incorporate this into future releases it would give us a big leg up on HD. Yes, HD can use it too, but they don't have BD+, and Paramount and Universal might be hesitant to permit it. If all of a sudden, Blu-Ray titles had overall better picture quality than new HD releases, it might help end this futile war.

[Sleuth255]

Is lack of deep color what causes the posterization effects I see in so many transfers?

[ryoohki]

Originally Posted by Sleuth255

Is lack of deep color what causes the posterization effects I see in so many transfers?

No.. it's lack of bitrate. Look at most Disney Encode since this year... Sony encode and Fox Encode (rescent ones in AVC) i coudln't detect Post anywhere. But in Warner title it happen 1 or 2 times per titles. 300 for example it happen when the screen is fading away, but not during actual movie

The MPEG2 preview of Chiken Little on the first BluRay disc had TON of Posterization, the AVC encode have none that i could find.

The only titles that this actually bothered me are : Planet Earth and Happy Feet...

The Fly is a great example of a title that could had Post but don't , the film is soft and there's a lot of Dark, Brownish color inside the Lab, a place that could have had Posterization easily but aren't

There's a lot of scenes in Heroes on HD DVD that present the same pattern as the Fly Lab shots, and there's quite a lot of Post in those, i saw them on my friend 24inch 1080p tv.. so imagine on a Projector...

[Sleuth255]

I see. tks!

[JadedRaverLA]

I don't think that copy protection has anything to do with it. Quite simply moviing to 36 or 48 bit color would raise the requried bitrate and space exponentially. You would need hundreds of gigabytes of space to store a typical movie (even well compressed) with such a high color depth. As it is Blu-ray and HD DVD only store 4:2:0 component video to save on space. Now, if you're referring to xvYCC (an extended color range) which is used by some recording equipment and is allowed in the AVCHD specs, that would be far easier to use, but since its not part of the spec for BD or HD DVD, I doubt it would ever be used.

Honestly, deep color is useful during the recording and mastering process, but not having it stored on the final disc isn't a huge loss.

[HDTV1080P]

Hopefully one day 100GB and 200GB movies will be released that support the deeper color. A firmware update should allow existing players to play 100GB disc’s according to Hitachi and perhaps maybe 200GB discs.
Right now there is a format war going on and spending money on making a deep color BLU-RAY format that is backward compatible with existing non deep color players most likely is not a priority.

[navychop]

To add to jaded's reply: Deep Color isn't part of the Blu-ray spec. And as hdtv mentioned, incorporating it would require a new spec incompatible with the old, and only future players would be able to play it. Short of some awful kludge, the only way older players could play such a title is if there were two versions on the same disc, on at least a four level disc- more likely 8 level.

[Cream]

http://www.highdefdigest.com/news/sh..._Necessary/853

.....in order for Deep Color to work it must be enabled in the player (possible), enabled in the television (possible), and the disc must be authored to include all of those billions of extra colors. That last one's the problem. The video encoded on HD DVD discs (and Blu-rays too) is limited to 8-bit color. So are the studio archive masters, for that matter. If some studio were to start authoring new discs with 16-bit Deep Color, those discs would be completely incompatible with the majority of existing players, rendering them unplayable. Such a disc would have to be labeled and marketed as an all-new Deep Color HD DVD or Deep Color Blu-ray format, and distinguished from the regular HD DVD or Blu-ray formats, discs for which would have to be released separately.