ovo-docs/Play/HDR.md

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title	description	published	date	tags	editor	dateCreated
High dynamic range		1	2024-07-08T21:36:20.699Z		markdown	2024-01-12T00:42:09.273Z

Definitions and standards

SDR

SDR (Standard Dynamic Range) is the conventional display technology characterized by a specific range of colors and brightness levels. Most commonly found in PC monitors, older TVs, and general monitors, SDR is the traditional standard for visual content.

HDR

HDR (High Dynamic Range) - refers to the colors, brightness, and contrasts a TV or Monitor can display. It can also be defined as the range between the brightest and the darkest part of an image.

There are various standards to this:

• HDR10
• HDR400
• HDR500
• HDR600
• HDR1000 (also called HDR10+)
• HDR1400
• HDR400 True Black
• HDR500 True Black

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HDR10 is considered the standard, and most HDR content is made in HDR10. HDR10 has a 10bit color range. Most HDR displays have a color range of 10-12 bit. This also means, that for example an 8 bit display, cannot be HDR. That's where some shady practices comes in by some PC monitor manufacturers.

It mostly comes down to display brightness. For example HDR600 can do 600 nits, HDR1000 can do 1000 nits...

The problem comes with for example HDR400, It's not defined properly, and some 8 bit displays claim to be HDR displays (by using two pixels next to each-other to achieve approx 10 bit range).

It is also a fact that 400 nits simply isn't bright enough to properly show HDR. So If you are looking for a HDR display, steer clear of displays branded HDR400 as they are vastly inferior to other HDR standards.

Dolby Vision

Dolby Vision stands out as a preeminent HDR standard meticulously crafted by Dolby, and it currently holds the distinction of being widely acknowledged as the pinnacle of HDR standards. The methodology employed by Dolby Vision in delivering HDR diverges significantly from conventional approaches, marking a departure that redefines the visual experience.

This cutting-edge HDR framework isn't merely an industry benchmark but is, in fact, a proprietary technology jealously guarded by Dolby. To gain access to and utilize Dolby Vision, hardware manufacturers are obligated to obtain a license, underscoring the exclusivity and controlled nature of this advanced visual technology.

Can I play Dolby Vision on my hardware?

To play Dolby Vision content on a TV or monitor, you need a compatible device and compatible media, either using streaming apps or a USB stick.

Beyond TVs and monitors, there are a select few laptops that come with Dolby Vision. But they are very expensive and rare, such as the Microsoft Surface Laptop Studio.

What if I don't have an HDR display?

The image will look pale, lacking colors, like having the brightness and contrast turned up too high.

With a HDR monitor or TV, you will get richer more natural colors, and bigger difference between bright and dark areas.

HDR video shown on an SDR display	HDR video shown on an HDR display

The video is shown with purple and/or green colors

This is called a "Pure Dolby Vision" media. They only contain Dolby Vision information, and is not backwards compatible with HDR or SDR.

Ovo Play should not have this type of media, due to Dolby Vision's proprietary nature and rarity. It cannot be converted on-the-fly to a compatible dynamic range.

If you find media that is behaving like this, open a support ticket on Ovo Request to bring it to our attention.