4K Blu-ray Video Scores

What Is 4K?

4K refers to the current ultra high definition (UHD) picture standard, which is 3840 pixels by 2160 pixels. 4K and 2160p are the same thing.

4K content can be watched on 4K Blu-ray discs or on streaming services such as Netflix and Amazon Prime.

The previous standard was 1080p, or 2K resolution, which was 1920 pixels by 1080 pixels. The content on Blu-ray discs is 1080p.

8K televisions have recently been made available for purchase, but there is no 8K content yet.

What Is HDR?

HDR stands for high dynamic range. In the context of 4K, it refers specifically to color depth.

DVD and Blu-ray content is 8-bit color. “Bit” is short for binary digit. 8 bits is therefore 2 to the 8th power, or 256.

TVs and monitors use combinations of reds, blues and greens to produce each color. An 8-bit color display therefore uses combinations of 256 reds, 256 blues and 256 greens to produce 16.7 million potential colors.

4K televisions are capable of 10-bit color. 10 bits is 2 to the 10th power, or 1,024. A 10-bit color display therefore uses combinations of 1,024 reds, 1,024 blues and 1,024 greens to produce just over 1 billion potential colors.

Right now there are no televisions capable of 12-bit color. However, there is content available in 12-bit color that can be watched as soon as 12-bit displays become available.

12 bits is 2 to the 12th power, or 4,096. A 12-bit color display therefore will use combinations of 4,096 reds, 4,096 blues and 4,096 greens to produce over 68 billion potential colors.

Types Of HDR

Currently, there are four HDR formats: HDR10, HDR10+, Dolby Vision and HLG.

HDR10 is pretty standard; any 4K TV with HDR should be able to play content encoded with HDR10. HDR10 is encoded with a static metadata layer, meaning that it is applied uniformly across the entire presentation.

HDR10+, like HDR10, is a single layer of 10-bit color. However, unlike HDR10, HDR10+ contains dynamic metadata, so the color can be applied differently on a frame-by-frame basis.

Dolby Vision is 12-bit color. It typically is applied in addition to HDR10 as a second layer with dynamic metadata.

Since there aren’t any TVs that can produce 12-bit color, Dolby Vision content is downscaled to 10-bit color on current TVs.

HLG, or Hybrid Log-Gamma, is HDR for content that is broadcast linearly instead of streamed on demand.

Native 4K Resolution: Shot & Finished On Film

The films in this section were both shot and finished on film. Although the film vs. digital debate is usually about how to shoot the movie in the first place, for the purposes of

Because these movies were finished on film, it is possible to simply scan the film at 4K resolution and create a new digital master. As we move into the 8K era, this possibility will continue to exist.

Dolby Vision

5 Stars

4.5 Stars

4 Stars

2.5 Stars

HDR10+

4.5 Stars

HDR10

5 Stars

4.5 Stars

4 Stars

3.5 Stars

3 Stars

2.5 Stars

1 Star

SDR

4.5 Stars

Native 4K Resolution: Shot On Film & Finished on 5.6K Digital Intermediate

HDR10

4.5 Stars

Native 4K Resolution: Shot On Film & Finished On 4K Digital Intermediate

Dolby Vision

5 Stars

4.5 Stars

HDR10

5 Stars

4.5 Stars

4 Stars

SDR

4.5 Stars

Native 4K Resolution: Shot Digitally & Finished On 4K Digital Intermediate

Dolby Vision

5 Stars

4.5 Stars

4 Stars

HDR10+

5 Stars

4.5 Stars

HDR10

5 Stars

4.5 Stars

4 Stars

3.5 Stars

3 Stars

2.5 Stars

SDR

4.5 Stars

Native 4K Resolution: Shot On Film, Finished On 2K Digital Intermediate & Reconstructed On 4K Digital Intermediate

HDR10

5 Stars

Upscaled 4K Resolution: Shot & Finished On Film

HDR10

2.5 Stars

1.5 Stars

Upscaled 4K Resolution: Shot Digitally & Finished On 3.2K Digital Intermediate

HDR10

4.5 Stars

Upscaled 4K Resolution: Shot On Film & Finished On 2.4K Digital Intermediate

HDR10

5 Stars

Upscaled 4K Resolution: Shot On Film & Finished On 2K Digital Intermediate

Dolby Vision

5 Stars

4.5 Stars

4 Stars

3.5 Stars

3 Stars

HDR10+

4 Stars

3.5 Stars

HDR10

5 Stars

4.5 Stars

4 Stars

3.5 Stars

3 Stars

1.5 Stars

Upscaled 4K Resolution: Shot Digitally & Finished On 2K Digital Intermediate

Dolby Vision

5 Stars

4.5 Stars

4 Stars

HDR10+

5 Stars

3.5 Stars

HDR10

5 Stars

4.5 Stars

4 Stars

3.5 Stars

3 Stars

2.5 Stars

  • Sing (2016) [Universal]
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