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本帖最後由 r32 於 2013-4-10 11:57 編輯
延伸閱讀.......http://forums.highdefdigest.com/ ... tv-upscaling-6.html
From the Sony PR in the original article:
"Mastered in 4K" Blu-ray Discs can be played on all existing Blu-ray Disc players.
Also
"Mastered in 4K" Blu-ray releases will feature titles...sourced from pristine 4K masters and presented at high-bitrate 1080p resolution, with expanded color showcasing more of the wide range of rich color contained in the original source
No where in the article does it state that they are using 10, 12 or 16-bit or deep color on the dics, and the PR is written in a way that it could apply to any Blu-Ray disc or to the master(ie the 4k MASTER has deep color
- the article no where says that this is going to be superior to current offering of Blu-Ray discs, are reencodes, or anything else.
Here are the FACTS of what has happened:
Sony made a press anouncement.
Sony is using 4k material to make 1080p discs
The movies listed were either filmed in 4k or higher, or were filmed in 2k with a 4k digital intermediary, so the source is 4k, so any Blu-Ray of these films were mastered from a 4k source, regardless of what a sticker might say.
Sony has not stated that these discs are superior to other Blu-Ray discs
Sony has not stated that they are rewriting the Blu-Ray spec.
Sony has not stated that these discs incorporate Deep Color
However, even if it is additional data built into a disc, one of three things need to happen:
1) New televisions need to come out to support this additional data, as it is not being sent in 10, 12 or 16 bit, but is being sent to the television as 8 bit with additional information. I doubt this is being how it is being done.
2) Sony is changing the Blu-Ray specs (meaning the discs would not work at all in older players without a firmware update, meaning discontinued and no-longer supported models would not be able to play the discs, and Sony stated their discs will work with all existing players)
3) Sony is somehow encoding additional data in the 8 bit space, and a simple firmware update would allow players to process the additional information. This really wouldn't be deep color, though, it would be like Dolby Surround where you are mapping surround channels into streo channels. IF and ONLY IF they are doing this, then you would get better color (although it wouldn't be true deep color) and you would maintain backwards compatability with older players. Also, to have space for the additional data, if you were still encoding in the 8 bit space, you would have to throw out a bit of the 8 bit color space. This might not be too noticable to the eye, but in effect, you would have to degrade the picture a bit for legacy users to include additional information for the higher color space.
If Sony is indeed using Triluminos (ie Deep Color), and these discs that are in the Sony PR are going to have this technology, then expect the disc release to coincide with firmware releases from manufactorors.
So, if we hear an announcement of firmware updates from various companies up to, and following, the release of these discs, than I will withdraw my comments. Otherwise, there is nothing that Sony is doing that is not already being done. Period. That is not an opinion, that is a fact. Anyone who states otherwise does not understand Blu-Ray technology.
text by #78, gravis778@ highdefdigest.com
edited by r32
r32 - 讓大家拭目以待 |
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發表於 2013-4-10 04:10
