UID710947
威望18
金钱86551
交易诚信度0
主题88
帖子4455
注册时间2010-7-22
最后登录2019-2-1
高级会员
   
交易诚信度0
注册时间2010-7-22
|
本帖最后由 passarella 于 2016-2-27 15:05 编辑
mastered in 4k碟片一定是x.v.colour的,这是官方的宣传定义。http://www.cnet.com/au/news/sony-mastered-in-4k-blu-rays-a-mixed-blessing/
其他电影公司的情况,我不知道。但是从广色域的趋势来看,蓝光也推广色域版本,前几年的x.v也该开始发挥了,松下索尼这些日系的均采用了,哪怕到了4K UHD TV也含。想一想BT709诞生了10年之后才开始应用。
x.v.colour优点就在于基本色域色彩定义方面完全保持了BT.709的一致相容性,仅仅是在扩展色域上进行了色彩重新定义。
"mastered in 4K" are still HD Blu-ray discs. Sony representatives have been using phrases like "near 4K", but we are still talking about movies delivered in 1920x1080 that will be upscaled to 3840x2160.
Enhanced bitrate: these discs exclude content extras in favour of using all available disc space to deliver the film in a greatly enhanced bitrate. Where most Blu-ray discs are typically delivered in rates in the 24Mbps to 30Mbps ballpark, these "mastered in 4K" discs deliver at 35Mbps to 38Mbps. A greater bitrate means a much clearer picture, and less moments where blocking or blurring will occur, particularly in action sequences. XvYCC support: in the Blu-ray standard, xvYCC (also known as x.v.Color) is a colour space option that to date, has almost never been supported. XvYCC extends the available colour gamut to better represent the colour space that the original film was intended to be displayed at, while the standard sRGB space cuts off a lot of information in the red and blue-green sections of the spectrum. As long as your Blu-ray player and your TV support xvYCC, these discs will deliver a solid colour enhancement over other discs on the market. Sony 4K algorithms: this final feature is a sweetener focused on giving Sony 4K TV owners a better experience with these discs than any other 4K TV owners. Being part of the same family, Sony Pictures and Sony Bravia have shared proprietary algorithm information to give the best possible upscaling performance on these films. Sony 4K televisions will be able to identify a "mastered in 4K" disc and use an upscaling algorithm based on the same formula used at Sony Pictures to downscale the film from 4K to HD. This secret sauce is likely to give a Sony TV the edge over other TVs that must use less-specific algorithms to upscale the content.
归结起来,新的"mastered in 4K"蓝光碟特征就是3点:更大码流、广色域x.v.ycc支持、针对倍线优化的4K算法。 |
|