Schedule. HTML Media Extensions WG. Meeting. Meeting. W3C Web & TV IG TPAC 2016

Transcription

1 Schedule Auditorium IV, First Floor 08:30-10:00 HTML Media Extensions WG - Web & TV IG Joint Meeting 11:00-11:30 Timed Text WG - Web & TV IG Joint Meeting 11:30-12:00 TV Control WG - Web & TV IG Joint Meeting 15:00-18:00 Web & TV IG Cloud Browser TF Meeting 1.07, Hall 4, First Floor HTML Media Extensions WG Meeting 1

2 Web and TV Interest Group Status Co-chairs: Yosuke Funahashi - W3C Giuseppe Pascale - Opera Software Mark Vickers Comcast Team Contact: Kazuyuki Ashimura W3C 2

3 Web & TV IG: Charter Scope Web-based media distribution which is currently done by media services over a variety of distribution channels (IP, satellite and terrestrial broadcasting, cable, telecomm, etc.) to a variety of devices (TV-sets, phones, tablets, PCs, game machines, etc.). Tasks Identification of requirements for tighter support of media-centric applications on the Web Platform Identification of gaps in the Web Platform that do not allow the identified requirements to be met Review of deliverables under development by other W3C groups that are relevant to the IG scope and report bugs as appropriate Liaison with other organizations in the media industry to promote adherence to W3C standards within global media specifications. 3

4 Web & TV IG: Work Flow Standards & trade orgs. New ideas & issues 4

5 Web & TV IG: Work Flow Standards & trade orgs. Web & TV IG (Task Force) 5

6 Web & TV IG: Work Flow Standards & trade orgs. Use cases Requirements Gap analysis Web & TV IG (Task Force) 6

7 Web & TV IG: Work Flow Standards & trade orgs. Use cases Requirements Specs Gap analysis Web & TV IG (Task Force) 7

8 Web & TV IG: Work Flow Standards & trade orgs. Use cases Bug reports current spec WG Requirements Specs Gap analysis Web & TV IG (Task Force) 8

9 Web & TV IG: Work Flow Standards & trade orgs. Use cases Bug reports current spec WG Specs Requirements Gap analysis New API new spec WG Web & TV IG (Task Force) 9

10 Web & TV IG: Work Flow Standards & trade orgs. Use cases Bug reports current spec WG Requirements Specs Gap analysis Web & TV IG (Task Force) New API New API draft spec CG new spec WG new spec WG 10

11 Web & TV IG: Task Forces Active Glass to Glass Internet Ecosystem (GGIE) TF Cloud Browser APIs TF Closed Web Media Profile TF Media Pipeline TF Home Network TF Testing TF Timed Text TF Media APIs TF 11

12 Web & TV IG: Task Forces Active Glass to Glass Internet Ecosystem (GGIE) TF Cloud Browser APIs TF Closed Web Media Profile TF Media Pipeline TF Home Network TF Testing TF Timed Text TF Media APIs TF Cloud Browser TF F2F Meeting this afternoon, Here! 12

13 Media Pipeline TF (closed) Gap analysis Bug reports HTML5 Adaptive Bitrate Requirements New API New API MSE EME Content Protection Requirements Web & TV IG New CG Sourcing M.R.I.T. CG Sourcing HTML WG Goal: Improve HTML5 media pipeline to support media services Outcome: IG Bug reports addressed. HTML5 is a W3C Recommendation, wide browser support MSE (Media Source Extensions): Candidate Recommendation, wide browser support EME (Encrypted Media Extensions): Candidate Recommendation, wide browser support Sourcing In-band Media Resource Tracks from Media Containers into HTML informative reference by HTML5 & MSE, but not implemented by browsers. Media Resource In-band Tracks CG inactive 13

14 Media Pipeline TF (closed) Gap analysis Adaptive Bitrate Requirements Bug reports New API New API HTML5 MSE EME MSE & EME v2 discussion today Content Protection Requirements Web & TV IG New CG Sourcing M.R.I.T. CG Sourcing HTML WG Goal: Improve HTML5 media pipeline to support media services Outcome: IG Bug reports addressed. HTML5 is a W3C Recommendation, wide browser support MSE (Media Source Extensions): Candidate Recommendation, wide browser support EME (Encrypted Media Extensions): Candidate Recommendation, wide browser support Sourcing In-band Media Resource Tracks from Media Containers into HTML informative reference by HTML5 & MSE, but not implemented by browsers. Media Resource In-band Tracks CG inactive 14

15 Web Media Profile (closed) Media Standards organizations Web Media Profile Web & TV IG New CG Web Media API spec Web Media API CG Goal: Create profile of HTML5 specs to support media applications Outcome & status: Draft Web Media Profile Put on hold because at the time (2011): a. HTML5 and related specs changing too rapidly b. Media standards organizations interested in HTML5 not public New CG Started: Web Media API CG associated with CTA WAVE (Web Application Video Ecosystem) 15

16 Web Media Profile (closed) Media Standards organizations Web Media Profile Web & TV IG New CG Web Media API spec Web Media API CG Goal: Create profile of HTML5 specs to support media applications Outcome & status: Draft Web Media Profile Put on hold because at the time (2011): a. HTML5 and related specs changing too rapidly b. Media standards organizations interested in HTML5 not public New CG Started: Web Media API CG associated with CTA WAVE (Web Application Video Ecosystem) I plan to present CTA WAVE & Web Media API CG in a Wednesday breakout 16

17 Home Network TF (closed) Requirements for Home Networking Scenarios New API Network Service Discovery Web & TV IG DAP WG Goal: Enable discovery & control of devices & services on the LAN Outcome: Use cases and requirements for potential specifications Network Service Discovery API (Working Draft) Security/privacy concerns raised by Privacy IG (PING), some Status: No browser implementations 17

18 Testing TF (closed) ATSC, DLNA, IPTV Forum Japan OIPF, SmartTV Alliance Testing Use Cases Testing Requirements Planning input Open Web Platform Testing Plan Web & TV Testing Survey Results Web & TV IG Testing group Goal: Improve HTML5 platform test coverage. Outcome: 10 external organizations surveyed, 5 returned survey Use cases & requirements completed Reports delivered to Testing group 18

19 Timed Text TF (closed) DECE, EBU SMPTE Timed Text Efforts Timed Text Use Cases Consensus Input Web & TV IG input TTML WebVTT Timed Text WG Goal: Facilitate use and interoperability of TTML and WebVTT Outcome & status: Document scope and variations of TTML and WebVTT Gather Web-based timed text use cases from the TV and Media industry & IG members Delivered IG Consensus Input to Timed Text WG charter New charter for TT WG (a) included both TTML and WebVTT (b) added a deliverable to create a mapping doc between TTML and WebVTT Mapping Between TTML and WebVTT Editor s Draft 19

20 Timed Text TF (closed) DECE, EBU SMPTE Timed Text Efforts Timed Text Use Cases Consensus Input Web & TV IG input TTML WebVTT Timed Text WG Goal: Facilitate use and interoperability of TTML and WebVTT Outcome & status: Document scope and variations of TTML and WebVTT Timed Text TF joint meeting 11:00-11:30 today Gather Web-based timed text use cases from the TV and Media industry & IG members Delivered IG Consensus Input to Timed Text WG charter New charter for TT WG (a) included both TTML and WebVTT (b) added a deliverable to create a mapping doc between TTML and WebVTT Mapping Between TTML and WebVTT Editor s Draft 20

21 Media APIs TF (closed) Media APIs Use Cases Media APIs Requirements New CG TV Control API Specification New WG TV Control API Specification Media APIs Gap Analysis Web & TV IG TV Control API CG TV Control WG Goal: Identify requirements for: Recording and downloading media Discovery and control of device capabilities (e.g. tuner control) Exposing TV metadata to web applications Mapping between Media Element API and in-band metadata Synchronization of broadcast content and web applications up to frame accurate Outcome & status: Started TV Control API CG, which produced TV Control API Specification 21

22 Media APIs TF (closed) Media APIs Use Cases Media APIs Requirements New CG TV Control API Specification New WG TV Control API Specification Media APIs Gap Analysis Web & TV IG TV Control API CG TV Control WG Goal: Identify requirements for: Recording and downloading media Discovery and control of device capabilities (e.g. tuner control) Exposing TV metadata to web applications Mapping between Media Element API and in-band metadata Synchronization of broadcast content and web applications up to frame accurate Outcome & status: Started TV Control API CG, which produced TV Control API Specification TV Control WG joint meeting 11:30-12:00 today 22

23 Glass to Glass Internet Ecosystem (GGIE) (active) GGIE Use Cases New CG? Media Standards organizations Further documents Web & TV IG IETF Related work Goal: identify new technical standards work to help improve web & Internet video capture edit package - distribute - watch Professional & Non-Professional & User-Generated Content (professional cameras, GoPro, smartphones) Outcome & status: 33 GGIE Use Cases Currently working on Content Identification Requirements 2 IETF Internet Drafts (more under development) Discussion: public-web-and-tv@w3.org & ggie@ietf.org 23

24 Cloud Browser TF (active) Cloud Browser Use Cases Cloud browser Architecture Cloud Browser Requirements Web & TV IG New API? New CG? Goal: Standard architecture and interface for cloud-based browser for light-weight devices Definition of Scenarios and Use Cases Definition of missing interfaces for Cloud runtime environment adaptation Discussion on the architecture and model of the Cloud Browser API Align the definition of existing gaps with the work of the TV Control API CG Outcome & status: Developed Architecture (incl. introduction to Cloud Browser), draft use cases (in progress), requirements (in progress). 24

25 Cloud Browser TF (active) Cloud Browser Use Cases Cloud browser Architecture Cloud Browser Requirements Web & TV IG New API? New CG? Goal: Standard architecture and interface for cloud-based browser for light-weight devices Definition of Scenarios and Use Cases Definition of missing interfaces for Cloud runtime environment adaptation Discussion on the architecture and model of the Cloud Browser API Align the definition of existing gaps with the work of the TV Control API CG Outcome & status: Developed Architecture (incl. introduction to Cloud Browser), draft use cases (in progress), requirements (in progress). Cloud Browser TF F2F Meeting this afternoon, Here! 25

26 MSE FOR CLOUD BROWSER CONCEPT Entrix Cloud UI evaluation

27 MSE FOR CLOUD BROWSER Initial reqs The CB client downloads the data on behalf of the CB. Req1: XMLHttpRequests must be made distinguishable to the CB that would identify which kind of resource is requested or what kind of an XMLHttpRequest it is. (negligible)the CB client should be able to signal available bitrate data to the CB The web app (CB) should be able to manipulate the data even if it only exists on the CB client. Req2: The mechanism must be identified to enable remote manipulations with video. The video chunks at the CB server get appended by the appendbuffer method. Here, there is no way for the CB client to know which XMLHttp Request is now getting appended. Req3: appendbuffer must be associated with the memory of CB client As the MSE JavaScript logic is being executed by the CB, the data could get appended before it gets manipulated. Req4: appendbuffer should be able to signal to the CB client only the changes to the data need to be changed The CB client loads the data on behalf of CB, returning the reference to the CB. Here the ordering of the data is impacted, as the web app loads the chunks in any order. Therefore, appendbuffer and clients memory might get out of order. Req5: The chunk ordering must be made available to the client; the different resources (a/v/bitrates) must be made distinguishable for the CB client. XHR data does not 1:1 correspond with appendbuffer. Req6. The CB client must be notified what and

28 EME FOR CLOUD BROWSER CONCEPT Entrix Cloud UI evaluation

29 EME FOR CLOUD BROWSER Initial reqs As both web app and the CB client request the jeys at license servers. Req1: An IP of CB must be associated with an IP of the CB client

30 Related CG updates Multi Device Timing CG Media Resource In-band Tracks CG Second Screen Presentation CG 30

31 Related CG updates Multi-device Timing CG meeting 15:30-17:30 Thursday Multi Device Timing CG Media Resource In-band Tracks CG Second Screen Presentation CG 31