4k Technical Summary

Transcription

1 4k Technical Summary

2 4k or UHD Ultra High Definition (UHD) is 3840x2160 pixels UHD is often called 4k 4k (digital cinema definition) is 4096x2160 pixels When we talk about 4k in the home market we mean UHD. CE industry applied term 4k to UHD Mastered in 4k means 4k content downscaled to HD for Blu-ray Supersampling means it looks better than content that was mastered in HD Some content providers will label as 4k content that is scaled up from 2k Sony TVs have industry leading up scaling built in, some other brands scale HD to 4k and it looks worse than SD.

3 8 84 UHD 50 HD 26 SD

4 Picture improvements beyond spatial resolution Picture specifications for high def are based on CRT TV capabilities With 4k there is an opportunity to improve other picture parameters These new parameters can improve HD too but will need new players. Parameter Larger color space (ITU-R Rec 2020 or XYZ) High dynamic range (HDR) aka extended dynamic range (XDR) Comments Colors that cannot be reproduced on a CRT TV More details in the highlights, darker shadows. Brighter screens for better color display HD is 100 nits, new XDR TVs are 1,000 nits, studio target is 4,000 nits but that uses far too much power. 10 or 12 bits color depth 8 bit used in HD can cause contouring of the image. (10 vs 12 bits still being debated) Higher frame rates 48 fps or 60 fps for high frame rate movies 100 fps or 120 fps sports broadcast

5 Acquiring 4k content features and episodic Camera Type Maximum Resolution Comments In use? 35mm Film Scanned at 4k Most features and all episodic that are shot on film 4k? HDR? Yes Yes Yes 65mm Film Scanned at 6k Lawrence of Arabia No Yes Yes 35mm CCD Digital Cinema Cameras Arri Alexa 2880x1620 or depending on format Red Epic & Dragon 1920x1080 Sony F35, Genesis (2005) No No No Up to 5.5k & 6k respectively CMOS RAW or ProRes Yes No Yes* CMOS RAW Yes Yes Yes* Sony F x2160 CMOS RAW or XAVC Yes Yes Yes* Sony F65 Normally 4096x2160, 8192x2160 possible CGI effects Typically 2k Resolution is rendering cost issue. CMOS RAW Yes Yes Yes* Yes Option Option * These cameras are, in varying degrees, capable of HDR but production decisions may mean

6 Not all 4k is created equal Sony F green pixels 2048 red pixels 2048 blue pixels 8k pixels True 4k output Red Epic 2560 green pixels 1280 red pixels 1280 blue pixels Sony F green pixels 1024 red pixels 1024 blue pixels 5.5k pixels 4k output 4k pixels 4k output Bayer pattern and CMOS sensors Arri Alexa 1440 green pixels 720 red pixels 720 blue pixels 2.8k pixels 2.8k output

7 Delivering 4k to the consumer Compressed files are bigger than HD but not 4 times larger 4k adds high frequency detail, affect on encoding depends on content Files for SNE service are 2-3 times size of HD files (AVC encoded) 4k delivery becomes practical with HEVC (H.265) codec Perhaps 35-40% more efficient Hardware decoders in shipping devices Sony Pictures is requiring significantly stronger content protection for UHD/4k than for HD Movielabs Enhanced Content Protection specifications HDCP 2.2 protecting the HDMI link to the TV Sony TVs have HDCP 2.2, not all other 4k TVs do HDCP 1.4 security is compromised

8 Availability of 4k in the consumer market Sony shipped server loaded with 11 4k movies with the 84 4k TV in late 2012 Sony 4k Video Unlimited service launched 1st September 2013 Preload and download 4k movies and TV shows Second gen 4k player and TVs have Netflix 4k Netflix started 4k streaming SPE content to Sony and Samsung TVs in June 2013 Adaptive streaming means instantaneous resolution may be less than 4k or content is heavily compressed Some reviewers are saying it doesn t look noticeably better than HD A lot of interest by broadcasters in UHD BSkyB and Sky Deutschland are experimenting with shooting sports in UHD and with high dynamic range Korean broadcasters have linear channels up.

9 Sony 4K Content Update Native 4K Current Status X1 server box currently US only (International scope underway) 70+ features & TV, including entire Breaking Bad series Additional key new releases & catalog o ASM 2 (2D), American Hustle, Monuments Men, Fury, Annie, Untitled Cameron Crowe Movie o 10 pre-approved catalog titles currently being evaluated Mastered in 4K Current Status Driven by alignment with Sony 4K TV launch 15 total titles across 2 waves Global bundle & retail opportunities underway Continue to utilize 4K masters for 1080p Blu-rays emphasize quality of 4K in Home Entertainment marketing