4k Discussion Sony Pictures 4k Content Creation Finish in 4k - - PowerPoint PPT Presentation

4k Discussion

Sony Pictures

4k Content Creation

Sony F65 – shoot in 4k Sony F35 – shoot in HD Shoot on film Film Scanner

2k Files

Scan in 2k

4k Files

Scan in 4k

Film in Archive

Finish in 4k Finish in 2k Downscal e to 2k 4k Digital Cinema 2k Digital Cinema Master in HD Blu-ray Master in HD Blu-ray Finish in 2k 2k Digital Cinema “Mastered in 4k”

Digital Camera Resolution

HD and 2k Cameras

4k Cameras

4k or not?

F55?

Making 4k better than HD

Differentiating 4k from HD

Diagonal Inches HD Viewing Distance Feet 4k Viewing Distance Feet 85 10.4 5.2 65 8.0 4.0

A consumer sitting further from the screen than the HD viewing distance cannot discern more detail in 4k than in HD

4k has to be differentiated from HD in three ways:

• Higher resolution
• Wider color gamut
• Display more colors
• Higher dynamic range
• Better shadows and highlights

vxYCC color for 4k and HD

xvYCC Color

• Background:

– xvYCC is a color space that supports a gamut larger than the color space of HDTV which is called Rec 709 – xvYCC was proposed by Sony and published in January 2006 as an IEC standard – xvYCC makes use of code values that are not defined in Rec 709 – The Bravia XBR8 supported xvYCC but the feature was apparently removed later models

• Blu-ray discs mastered in xvYCC will be watched by many consumers on TVs that do not support xvYCC

– Blu-ray players will not convert from xvYCC to Rec 709

• Care has to be taken when mastering xvYCC content to ensure it looks good when displayed on a Rec

709 TV

– The way that a Rec 709 TV displays xvYCC code values undefined in Rec 709 is not also not defined

Mastering xvYCC

P3 Transform & Color Correction xvYCC Master BD Master Transform Rec 709 Master QC on xvYCC display QC on Rec 709 display iTunes Master QC on Rec 709 display

Notes:

• P3 is the color space for digital

cinema and all theatrical content is mastered in P3

• Rec 709 is the standard color

space for HDTV

• The xvYCC color space is larger

than Rec 709 but smaller than P3

Content protection for 4k

4k Content Protection

• 4k in the home is being driven by CE, not the studios
• Studios show little interest in releasing 4k to the home
• Studios can afford to wait for enhanced content protection before releasing

4k premium content

• The enhanced content protection discussion started in DECE/Ultraviolet
• ver a year ago

– Most of the other studios are looking for enhanced content protection for HD in the home entertainment window – The latest proposal from the implementers in DECE is that enhanced content protection will apply to 4k, early window HD and 3D content Note: The security requirements for some content (e.g. sports events, reality entertainment) may be less than for premium content

4/7/15 Sony Pictures Confidential 14

AACS

• AACS, the content protection for Blu-ray discs, has problems:

– Vulnerable to “hack once, hack all”: when an AACS device key is exposed all content on BD discs manufactured before that key is revoked can be ripped – AACS security breaches can only be dealt with by revoking device keys – The AACS revocation process takes 3-6 months – Illegal Blu-ray ripping is now a cloud service offered by off-shore providers

• The studios in the AACS founders agreed to compromises for CE device makers

– AACS allowed high definition analog outputs on Blu-ray players until recently – HD analog outputs cannot be protected

Content Delivery for 4k

DRAFT

Use Cases

1. Electronic Sell Through (EST)

– Consumer purchases title through Online Account – Consumer downloads content to any device registered to Online Account – Device transparently obtains playback license – Consumer plays content

2. Physical media with on-line activation

– Consumer purchases title on physical media – Registered device responds to media insertion and adds to consumer’s Online Account – Device transparently obtains playback license – Consumer plays content

– Directly from physical media – From copy on registered device

DRAFT

Use Cases

3. Physical media without on-line activation

– Consumer purchases title on physical media – Consumer plays content directly from physical media – Consumer cannot copy content, must have physical media – Requires different content protection scheme

4. Streaming

– Consumer purchases title (ownership or rental) through Online Account – Device connects to streaming provider using Online Account – Device transparently obtains playback license – Consumer streams content to any authorized device

DRAFT

Physical Media Offering

• Many consumers want to buy physical media with an electronic copy

– Studios bundle a Blu-ray disc with a digital offering (e.g. UV, bonus digital copy, AACS managed copy, etc.) – Studios are selling 2 copies for the price of one

– Consumers keep the disc and use the digital offer  – Consumers keep the disc and sell the digital offer  – Consumer use the digital offer and sell the disc 

DRAFT

Content Delivery

• Use the same file format for download and physical media

– Standardized file format such as the Common File Format (CFF) – Physical media and download are just two different ways to get the 4k file to the consumer

• Streaming with industry standard MPEG-DASH

– Uses a file format that is similar to CFF

• SPE is researching 4k delivery using H.264 (AVC) as an interim codec

– Initial results are encouraging – Other companies are doing similar research – H.265 (HEVC) is the long term solution but completion of standard, resolution of IPR claims and implementation may make immediate adoption difficult – However, without an upgrade path to H.265 early adopters of 4k products will be unable to get new 4k content

DRAFT