Studio - Panasonic meeting - WikiLeaks · Managed copy & Bridge use case. HDR. 3 Panasonic...

Studio - Panasonic meeting

February 6 / 7th, 2014

Panasonic

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Panasonic Confidential

Agenda

HDR UHD spec development and licensing Issues SFF DRM related issuesManaged copy & Bridge use case

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Background

BackgroundHDR gives the best user experience when contents are coded and displayed

with same HDR parameter.Currently, there are almost no TV’s having HDR functionality in CE market.Standard bodies are currently discussing and HDR standard is expected to be

available by 2015.ITU-R: Established a Reporter Group and under study of HDRSMPTE: May standardize by June. There is a possibility to establish liaison

with ITU-R.MPEG: Establishing liaison with ITU-R

HDR parameter transmission format is under discussion.TV with HDR functionality is expected to be widely available after HDR standard

having been fixed.

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No Change

ProposalNo change of BD player between phase 1 and Phase 2. In phase 1, BD player is phase 2 ready.HDR parameters are fixed after HDR standard is fixed in phase2.HDR disc contains only HDR content. Phase 1: Require all BD-ROM Players have to have the capability to transmit the parameters carried in

the SEI message over HDMI (if the player supports HDMI) and to exchange display capabilitysuch as HDR availability.Extension of HDMI to transmit these parameters will be done through liaison.

Phase 2: After MPEG has standardized a code-point for HDR parameters standardized in ITU-R,

parameter values for HDR disc to be aligned with final ITU-R work, if necessary

SDR TV

HDR TV

Phase1

Phase2

SDR Disc

HDR Disc

SDR Disc

Display HDR video

Define to use SEI message in HEVC

Fix HDR parameter Values in SEI

after HDR standard has been fixed

Require transmit HDR parameter

SDR TV

Display SDR video

UHD spec development and licensing issues

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Background

• Blu‐ray Device Business: Yesterday vs. Today– World‐wide Blu‐ray Player Market Size is shrinking:

2012: 21Mil 340k vs. 2015: 18Mil 120k ( Source: Gfk and JEITA)– Average price is eroding:

2012: $85 vs. 2015: $72（ Source : Gfk）

• Test Tools developments– Suppliers: Volunteers.

• Official Test discs– Panasonic(8 categories, 12 discs), Sony(10, 13), Fox(6, 7), Disney(5, 5), Philips(3, 3), Oracle(2, 2), Deluxe(1, 6)

• Official Verifier：– Panasonic, Sony, Mitsubishi

– Today, all these companies may not see much future growth of Blu‐ray Disc business hence unable to spare the resources for Test Tool developing.

– The big challenge is how to secure R&D and engineering resources.

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Proposed Direction (1/2)

1. Unless Test Tools and Verifiers are developed for UHD, even when the UHD Specification is completed, BDA can not commence the license of a new format. It is critical to share this information with key BOD members including the current situation that there is no volunteer developer available

2. It is also critical to bring to the attention of key BoD members that without newly developed authoring tool, no UHD disc can be manufactured.

3. It is important to come‐up with clear set of “New Rule” for spec development to concentrate on the really useful features for users. Study Physical and MPEG rule and incorporate “New Rules” at

UHD‐TF discussion.

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Examples of Conditions to Incorporate a New Proposal

A proponent shall show technical feasibility / effectiveness by providing sample discs and the evaluation data.

The feasibility / the effectiveness shall be confirmed by RRT in TEG6.

A proponent provides evidence of technical feasibility and technical merit: Reference software Evidence For coding efficiency related proposal: Quantitative evaluation data (SNR, etc.). For functionality related proposal: Demonstration to explain user merit.

Conformance streams

Cross‐check by at least one non‐proponent.

Physical Specifications

MPEG

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Proposed Direction (2/2)

4. One proposal is to make sure that the purchase of Test Tools is pre‐requisite condition to grant a license. So that to share the burden of Test Tool development cost. (No free ride permitted.)

5. In addition, BDA should consider the followings:a. To improve the FLLA to reduce the existed loopholes that allow

the existence of the inappropriate license behaviors.b. To study and develop a business model/ecosystem for the start‐

up and operation of servers required for UHD, for example, using “Flat + Transaction Volume Based Fee” structure instead of “Flat Licensee Fee”.

c. To explore a certain mechanism to earn revenue for issuance of keys to export contents in UHD ecosystem.

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Relationship between CFF & BDA-SFF CFF as a starting point towards BDA-SFF. Current CFF and BDA-SFF have differences in GOP structure, 4K HEVC support, etc. CFF is now being reorganized. After reorganization, CFF and BDA-SFF should be unified to ensure compatibility. Needs discussion on who owns and maintains BDA-SFF.

– BDA, DECE, International standardization body like SMPTE, etc.

CFFBDA-SFF(for download only)

Current • Streaming specific feature like adaptively changing resolution. etc.

• GOP structure for both download and disc.

CFF

BDA-SFF= CFF for download

• GOP structure for both download and disc.

• Streaming specific feature like adaptively changing resolution. etc.

• GOP structure for streaming.

After CFF is reorganized

• GOP structure for streaming.

• 4K HEVC support

• 4K HEVC support

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Digital copy and Blu-ray UHD Package

Most new Blu-ray titles include Digital copy features (UV, Apple, etc) Clear distinguish between Digital copy and Blu-ray Export features/use case. Export should meet Ultra/Very high quality Digital Content (SFF) to match users

needs (MUST keep Blu-ray Image Quality: No re-encoding)

BD Combo

UHD ComboUHD Logo

Digital SFF worldUHD SFF

FHD SFF

ExportUHD (Ultla High Quality)

FHD (Very High Quality)

FHD‐SD (High Quality)

Apple worldFHD‐SD (High Quality)

DRM related issues

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Issues to be resolved Based on the experience on current 2K Blu‐ray with AACS, we have

issues to be resolved for UHD format with Next‐gen AACS Panasonic would like to confirm assumed attack scenario at first

(referred to MovieLabs’ specification for Enhanced Content Protection V1.0)

Attack Scenario 1 (First priority to be resolved)Attacker steals a replicated disc even before street dateAttacker extracts Title Key from this disc, and releases it before street date

Attack Scenario 2 (Second priority to be resolved)Attacker hacks player (typically PC soft), and extracts Device KeyAttacker provides ripping tool with this leaked Device Key

Attack Scenario 3 (Third priority to be resolved)Attacker uses leaked Device Key to extract Title Key from a discAttacker releases leaked Title Key for naughty public to rip a disc

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Measure against Attack Scenario 1

Attacker extracts and releases Title Key from disc before street dateKey is not recorded on the disc, but distributed from the server

Current Attack Scenario

Counter measure

Ripping Tool

Title Key

ProtectedContent Ripped at

street date

Ripping Tool

Title KeyServer

CompliantPlayer

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CompromisedPlayer


Attacker provides a ripping tool with leaked Device KeyKey Server can identify leaked Device Key in PKI authentication, and decline to provide Title Key to this device (= Ripping Tool)

Current Attack Scenario

Counter measure

Ripping Tool

Device Key Ripped

Ripping Tool CompromisedPlayer

Device Key

Title KeyServer

BlackList

Black List update should be as fast

as possible

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Attacker releases a leaked Title Key to be used in unauthorized playerEach Exported Content (SFF) is encrypted in different key

Potential Attack Scenario

Counter measure

Playable

UnauthorizedPlayer

Title KeyExtraction Tool

DeviceKey Title Key

ExportedContent

Title KeyExtraction Tool

DeviceKey Title Key

AuthorizedPlayer

UnauthorizedPlayer

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Summary on this topic

Based on the experience on current 2K Blu‐ray with AACS,we have issues to be resolved for UHD format with Next‐gen AACS

Counter measures should be introduced against well‐known attack scenarios

Thanks to “Title Key Server” concept, most of well‐known attack could be mitigated

If Panasonic misses other potential attack scenario,Panasonic is happy to corporate to find mitigations with studios

Managed Copy & Digital Bridge

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Blu‐ray UHD player with Bridge/Export function

In BDA scope, Same Blu‐ray UHD format (BDMV FE) & Next Gen AACS must be used in Blu‐ray UHD disc, device‐bound copies and Blu‐ray UHD download

Blu‐ray UHD player exports Blu‐ray UHD content with Next Gen AACS protection to AACS decrypter, which converts Blu‐ray content to outside DRM and outside or/and Blu‐ray format and store to portable device and HDD

Blu‐ray Player with HDD i/f

BDA ScopeNext Gen. AACSTitle Key server

４K映画

HDMIBDMV FE Format decoder

４K Image

USB, etc.

BDMV FE Format

Blu‐ray / AACSContent server

BDMV FE Format

DownloadBDMV FE Format

device‐boundcopy

JUST COPY Function

Next Gen AACS

Next Gen AACS Next Gen AACS

BDA defined SFF AV decoderOutside DRM decrypter

Format Converter

４K映画BDA defined SFF (AV only)

Outside DRM

Additional rules1. One Common Outside file format (SFF: A/V data

only) defined by BDA 2. Blu‐ray player must have format conversion & AES

encryption functionality (Common encryption).

AES encrypterNext Gen. AACS decrypter

AdditionalBDA Scope

Export

Outside Navigation Format


FromInternet

Final agreementin Bangkok

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Bridge function

Bound copy: Mandatory for both device (Storage device: option) and content Export: Mandatory for both device (Storage device: option) and content UHD Blu-ray device will handle these three types of discs

1. UHD Blu-ray disc: Bound copy: BDMV-FE and Export: UHD SFF2. Blu-ray 3D disc: Bound copy: MVC and NO Export3. Blu-ray disc：Bound copy: BDMV and Export: FHD SFF

Storage device(Internal & portable)

Mobile Device/Media

SFF/Common Encryption WorldBlu-ray WorldExportUHD

Logo

UHD BDMV

UHD SFF

UHD SFF

FHD SFF

FHD SFF

Bound Copy


SFF format Converter

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AACS Managed Copy rules for Current Blu-ray disc

For AACS Managed copy rules: BDMV copy (Device Bind/Media Bind by any AACS authorized DRM):

Mandatory for content, Option for Device SFF Exported copy (Device Bind/Media Bind by any AACS authorized DRM):

Mandatory for content, Option for Device Ref: Export function: Option for both Content and device


Mobile Device/Media


Logo

FHD SFF

FHD SFF

BDMV Copy



3D SFF

3D SFF

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Panasonic understanding of UHD Bridge function No AACS Managed copy rules for UHD disc (To be discussed) Export: Mandatory for both device (Storage device: option) and content

Studios express that Exported UHD SFF content is not played in Blu-ray device without a retailer authorization (not like Managed copy content)

If BDMV copy is not Mandatory for content, why device manufactures supports Export functionality? Because this situation is much worse than the current Managed copy rules.


Mobile Device/Media


Logo

UHD BDMV

UHD SFF

UHD SFF

Bound Copy


SFF format Converter Mandatory!!

No playback right without retailer authorizationIn Blu‐ray device ??

No Managed copy type BDMV‐FE Copywith Blu‐ray device ??

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Panasonic position for Bridge function We need reasonable (compatible with the current AACS Managed copy) rules

for Bridge function. The current Blu-ray disc case:

Both BDMV copy and SFF export should be follow the current AACS MC rules. We can add new rules (e.g. UV support, Retailer support)

UHD Blu-ray disc case: As same as the current Blu-ray rules or a brand new rules for UHD?


Mobile Device/Media


Logo

UHD BDMV

UHD SFF

UHD SFF

FHD SFF

FHD SFF

BDMVCopy



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Digital BridgeContinued

Copy Protection: List of approved DRMs – List to be defined, updated and managed under strict criteria using a process

to be proposed by AACS that involves MovieLabs and is subject to approval by CPG.

Legacy Support: Optional – Output format must be same container format as FE export; technical

feasibility of converting requires further study; may be mandatory (on both devices and new discs, with exceptions) if determined to be cost‐effective and no Studio objects. In any case, the BDA will create a specification to support digital bridge as defined in this proposal.

11/20/2013 BDA Confidential


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Our understanding of Multi DRM Support

In Bangkok, we agreed Multi-DRM support by using “List of approved DRMs” Same common encryption method allows simple export, User does not need

to choose output DRM/devices. Exported SFF file can be used by any devices which have approved DRM

BDA-SFF content

C-EST SFF PlayerUHD Blu-ray Device

A EST-SFF Player

B-EST SFF Player

Export

DRMa)

DRM c) DRM c) Sites

DRM b) DRM b) Sites

DRMb)

DRMc)AACS

TK for BDA‐SFF

One export file forevery authorized DRMs

AACSAACS‐Export TK Sites

TK for Export

DRM a) DRM a) Sites

TK for BDA‐SFF

TK for BDA‐SFF

TK for BDA‐SFF

TK for BDA‐SFF

TK for BDA‐SFF

TK for BDA‐SFF

AACS

AACS Approved DRMsAACS Approved DRMs

AACS Approved DRMs

AACS Approved DRMs

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Some studio position?: no Multi DRM Support

Some studio mentioned Digital World controlled by Digital retailers. SFF file can be played back any Device which can get playback rights from Digital

retailer. No AACS involvement. UHD Blu-ray Device may or may not play back SFF file which is converted by it.

BDA-SFF content

C-EST SFF PlayerUHD Blu-ray Device

A EST-SFF Player

B-EST SFF Player

Export

DRMa)

Retailer c) Retailer c) Sites

Retailer b) Retailer b) Sites

DRMb)

DRMc)AACS

??

TK for BDA‐SFF

One export file forevery devices

StudioRetailers a) Retailers a)

Sites

TK for BDA‐SFF

TK for BDA‐SFF

TK for BDA‐SFF

Studio Approved RetailersRetailer Selected DRM

Retailer Selected DRM

Retailer Selected DRM

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Digital Bridge Use case

Multi DRM support VS Digital retailer control If we do not understand the current agreement and business situation, we

will spend meaningless discussion. We need any new reasonable solution.

Digital Bridge Use case: Five types of use cases1. Bound copy for BDMV(-FE)/AACS content2. Bound copy for SFF/CENC content3. Media Bind (Authorized DRMs, e.g. AACS MB) for BDMV(-FE) & SFF/CENC

content4. Domain Bind (Authorized multiple DRMs support, e.g. DECE) for SFF/CENC

content5. Retailer Bind (e.g. Apple, Amazon, VUDU) for SFF/CENC content

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４K映画


４K Image

USB, etc.

BDMV FE Format


BDMV FE Format


device‐boundcopy

JUST COPY Function

Next Gen AACS



Format Converter


Outside DRM





AdditionalBDA Scope

Export



FromInternet


Concern 1: Export to WHOM?How can user understand this unknown functionality in the UHD Blu‐ray player? How to explain to user about this Bridge functionality and SFF data?

User Experience is Key factor of success:Several concerns from the UHD Blu‐ray device users’ view points=> How to realize Simple, Easy, Understandable User experience

Concern 2: Playback of Export content in UHD playerHow can user use (or even verify) this exported SFF content in the UHD Blu‐ray player?

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４K映画


４K Image

USB, etc.

BDMV FE Format


BDMV FE Format


device‐boundcopy

JUST COPY Function

Next Gen AACS



Format Converter


Outside DRM





AdditionalBDA Scope

Export



FromInternet


Concern 1: Export to WHOM?How can user understand this unknown functionality in the UHD Blu‐ray player? How to explain to user about this Bridge functionality and SFF data?

User Experience is Key factor of success:Several concerns from the UHD Blu‐ray device users’ view points=> How to realize Simple, Easy, Understandable User experience

Concern 2: Playback of Export content in UHD playerHow can user use (or even verify) this exported SFF content in the UHD Blu‐ray player?

1. User can understand Bound Copy (Device bind) for both BDMV and SFF

2. User can understand “MOVE” bound copy BDMV / SFF file to Media Bind physical media (e.g. CPRM/SD Card)

1. User expect to play back Bridged content (both BDMV / SFF) in any UHD Blu‐ray device.

2. User expect to play back “MOVEed” BDMV / SFF file to Media Bind physical media in any UHD Blu‐ray device.

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Digital Bridge Use case (to answer concern 1&2) UHD Blu-ray device has to support two types of AACS Device Bind Copy1. Bound copy for BDMV-FE/AACS content with AACS TK2. Bound copy for SFF/C-Enc content with AACS TK UHD Blu-ray device must play back both BDMV file and SFF file in AACS DB

storage.

Internal HDDPortable HDD

N.G. AACSBDMV-FE

Blu-ray World

AACS Device BindUHD Logo

* AV data means not only AV data, but also subtitle and meta data

N.G. AACS(TK)

N.G. AACS(TK)

(NG-)AACSBDMV(-FE)

(NG-)AACS(TK)C-EncSFF

N.G-AACS(TK)AACSBDMV

AACS(TK)

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Digital Bridge Use case (to answer concern 1&2)

UHD Blu-ray device may support Media bind copy (MOVE).1. Media Bind copy (Authorized DRMs) for SFF/C-Enc content with MB TK2. UHD Blu-ray Device can “MOVE” Both BDMV and SFF content (AACS DB) to

AACS authorized Media Bind media(device)


N.G. AACSBDMV-FE

Media Bind Blu-ray World

AACS Device BindUHD Logo


N.G. AACS(TK)

N.G. AACS(TK)

(NG-)AACSBDMV(-FE)


N.G-AACS(TK)

Portable HDD Mobile Device

AACSBDMV

AACS(TK)

MB(TK)

Media Bind

C-EncSFF

MB(TK)C-EncSFF

MB(TK)

Portable HDD Mobile Device

MB(TK)

MOVE

MB EncBDMV(-FE)

MD EncBDMV(-FE)

MB(TK) MB(TK)

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Digital Bridge Use case (to answer concern 1&2) UHD Blu-ray device will bridge four types of output files1. Domain Bind or Multiple Retailers (multi Authorized DRMs support system)

for SFF/C-Enc content with DB TK (e.g. UV)2. Retailer Bind (e.g. Apple, Amazon, VUDU) for SFF/CENC content (CP can

decide to rule and TK delivery mechanism)


Portable HDDN.G. AACSBDMV-FE

Mobile Device

Blu-ray World

AACS Device Bindor Media BindUHD

Logo


N.G. AACS(TK)

N.G. AACS(TK)

(NG-)AACSBDMV(-FE)


N.G-AACS(TK)

C-EncSFF

Retailer (TK)

Domain Bind or Multiple Retailers bind

C-EncSFF

Retailer (TK)

AACSBDMV

AACS(TK)

Retailer (TK)

Retailer bind: e.g. Apple ecosystem

Retailer bind: e.g. Amazon ecosystem

Retailer Bind: e.g. Vudu ecosystem

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