The CTA WAVE Project. Jon Piesing. CTA.tech

Transcription

1 The CTA WAVE Project Jon Piesing 1

2 Problems in OTT m3u8 HLS mpd Content DASH ismc Preparation Smooth Problem f4m HDS ios Player HTML5 Application Windows Environment Problem Android Brightscript Tizen, WebOS Glitches when switching bitrate Codec incompatibility Scaling display issues Device Partial profile support Long-term playback instability Playback Audio discontinuities Request protocol Problem deficiencies Memory problems CPU weakness Variable HDR support Unknown capabilities Ad splicing problems 2

3 WAVE Recognizing these challenges, in Dec 2015 the Consumer Technology Association (CTA) established an open-process, cross-industry engineering effort to identify a standards-based solution to audio-video interoperability. Web Application Video Ecosystem 3

4 3 important facts about WAVE WAVE is global in scope, not just North American. We welcome increased global participation. The MPEG Common Media Application Format (CMAF) is the basis for content preparation. HTML5 APIs are the basis for the preferred common video application environment. 4

5 Members Adobe, AGP, Akamai, AT&T, BBC, BSkyB, CableLabs, Comcast, Cox, Deutsche Telekom, Discovery, Disney, Dolby, Eurofins Digital Testing, Facebook, Fraunhofer, Global Eagle Entertainment, Google, HBO, Intel, LG, Microsoft, MLB Advanced Media, MovieLabs, Netflix, Opera, Qualcomm, Roku, Samsung, SCTE, Sony, Starz, Toshiba, TP Vision, Verance, Verizon, Viacom International and WWE 5

6 Organization Steering Committee Technical Working Group Content Specification Task Force HTML5 API Task Force Device Playback Capability Task Force Test & Compliance Task Force 6

7 Content Specification Task Force Problem they are solving: How to package and prepare content to play across the broadest number of CE devices. Solution they are proposing: Develop a profile of ISO MPEG CMAF. Create a content specification which mandates that profile along with key system elements and other metadata required for compliant playback. Work with external groups to define how HLS and DASH should use that profile Timeline: February 1 (CSTF #15) - CSTF draft spec April 19 (post-cstf #20) Publish CSTF Spec for NAB (22-27 Apr 2017) 7

8 Device Capabilities Task Force Problem they are solving: Segmented media is not reliably decoded, decrypted and displayed on many CE devices Applications want to use the device capabilities (codecs, decryption engine, etc.) for consistent and high-quality playback of WAVE-based content Solution they are proposing: Develop a specification with normative definitions around the quality of segmented media playback. These requirements will be applicable to HTML5 and non-html5 devices, but the tests will be developed for the HTML5 devices only. Timeline: Q4 2016: Use case specification with prioritized use cases, issues and functions Q2 2017: Requirements specification including expected behavior(s), requirements, potential unit tests, minimum set of streaming/playback requirements 8

9 HTML5 API Task Force Problem they are solving: MSE/EME implementations vary widely across devices and browsers. Solution they are proposing: Identify a minimum set of media application APIs specific to the playback of audio-video content. This set will be developed in the newly formed Web Media API Community Group in the W3C. ( ) Identify gaps in current W3C APIs. Provide minimum, testable requirements and implementation guidance for User Agents and provide web application developer guidance. Timeline: August- Oct iterate feature set with community, identify gaps in existing W3C Specs, develop guidance for user agent implementation. Spring Release candidate HTML5 API set. 9

10 Test & Conformance Task Force Problem they are solving: How to test content for compliance with the Content, HTML5API and Device playback specs. Solution they are proposing: Defining how testing will be conducted (self-test, 3 rd -party; test only and/or certification; etc.); Documenting test requirements and test plans from specifications and use-cases; defining test tools/harnesses; cataloguing and evaluating existing test materials for suitability for use in WAVE. Providing and maintaining test materials (including streams) as needed. Timeline: F2F@IBC 14th Sept Proposed test plan for WAVE, Recommend WAVE test approach to SC. CES th Jan Prioritized use cases from other TFs, list of detailed test requirements (assertions) and materials. NAB nd April (Sub)set of test material documented and available 10

11 Wave Specs and Scope Note: HLS-CMAF spec may be published by WAVE DASH-CMAF Integration Spec CMAF Specification Other Specification W3C Specifications WAVE Content Spec Reference content 4 CMAF spec Reference content 4 WAVE CMAF Profile WAVE Device Capability Spec zzzzzzzzzzzzzzzz zzzzzzzzz Unit tests for WAVE Device Cap WAVE App API Spec Unit Unit tests for Application Unit tests tests for API for WAVE HTML API HLS-CMAF Integration Spec Key Green = WAVE Yellow = Potential WAVE Red = MPEG Blue = DASH-IF Purple = W3C Magenta = Apple Gray = others = WAVE device test suite Plays DASH MPDs DASH MPDs DASH MPD HTML5 HTML5 Test Test App HTML5 Test App App Manifest-like Thing Manifest-like Thing Test Object List WAVE HTML5 Test App WAVE HTML5 Test App WAVE HTML5 Test App Other Manifest Other Manifest Other Manifest Plays HLS Manifest HLS Manifest HLS m3u8 HTML5 Test App Plays Devices Supporting DASH but Not HTML5 Executes Devices Supporting HTML5 & DASH but not MSE Executes Device Supporting WAVE HTML5 App Environment Devices Only Supporting Proprietary Streaming Executes Devices Supporting HTML5 and HLS but not MSE Devices Supporting HLS but not HTML5 11

12 N Who uses what Normative I Informative Unused Content Spec HTML5 API Spec Device Playback Spec AV Service Provider Content developer Application developer Device manufacturer App Platform developer AV Platform developer N I N I I N I I N 12

13 Why is WAVE useful to you? Content providers It will allow you to package content that will play across all CE devices. It will allow you to build/use one JavaScript player library that will work across a larger number of CE devices. When content plays on a CE device, it will do so more reliably and at higher quality. It will reduce (->eliminate) the need for you to develop and maintain specs that device manufacturers must meet Device manufacturers It will reduce (->eliminate) the need for technical discussions to get content on your devices. It will reduce the need for you to analyze, implement & certify multiple different content provider specifications 13

14 WAVE and HbbTV WAVE is addressing a far broader range of devices than HbbTV But really focussing on one particular feature in depth WAVE and HbbTV have common goals in improving interop for OTT content presented by HTML5 apps WAVE device capabilities spec is relevant to improving HbbTV DASH interop Test cases for that should work with HTML5 video element & native DASH player as used in HbbTV Hopefully can benefit 2018 HbbTV products Hopefully in time HbbTV will adopt MSE and more of WAVE s work will be relevant MSE on track to be W3C Recommendation by end

15 How can you participate? Join WAVE by ing 15