What is Dolby Vision?

 

What is Dolby Vision?
Dolby Vision, in basic terms, is an end-to-end production process, from the content creation right through to mastering and then you viewing it at home. Because it's an end-to-end process, the metadata in each frame can be dictated by Dolby and then compatible equipment can read it and understand it exactly how it was meant to be. It means you'll get the best possible viewing experience. HDR10 on the other hand relies on the HDR TV itself to determine how to interpret the metadata and display it.

 

The main difference between Dolby Vision and HDR10 though, is the colour depth and brightness the content and equipment is capable of achieving. Dolby Vision content is mastered in up to 12-bit colour depth, compared to 10-bit of HDR10 (which is where HDR10 gets its name from). You may be wondering, what difference could 12-bit over 10-bit possibly make? Well, 12-bit colour depth gives access to over 68 billion colours, compared to just 1 billion with 10-bit. This means the colours you see from Dolby Vision films and on compatible TVs are going to be far more accurate and as the director intended.


Brightness is another key factor in determining the success of HDR content. The Ultra HD premium specification says HDR TVs must reach a minimum of 1,000 nits peak brightness, which many of the current crop of HDR TVs can do. new TVs from all the major manufacturers at CES 2017 that can achieve 1,500 to 2,000 nits, but Dolby Vision content is mastered for 10,000 nits peak brightness. But at the moment, no TV can support this, so content is actually mastered to around 4,000 nits. However it means Dolby Vision is very well future-proofed, because the potential to go even brighter is already there for when the displays can support it.


What TVs support Dolby Vision?
In order to watch Dolby Vision content, you need to have the right equipment. The benefit of Dolby Vision TVs is that they can support HDR10 as well, but HDR10 TVs can't do Dolby Vision, so if you want the best of both worlds, Dolby Vision is the way to go.
Dolby Vision equipment has dedicated chips inside which read the metadata and reproduce the images exactly how they were made.

 

 

 

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