CR: Media Source Extensions

Media Source Extensions

http://www.w3.org/TR/2016/CR-media-source-20160705/

feedback due by: 2016-08-10

Abstract

TMLMediaElementHTML51

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Status of the Document


This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at http://www.w3.org/TR/.

The working group maintains a list of all bug reports that the editors have not yet tried to address; there may also be open bugs in the previous bug tracker. This draft highlights some of the pending issues that are still to be discussed in the working group. No decision has been taken on the outcome of these issues including whether they are valid.

Implementors should be aware that this specification is not stable. Implementors who are not taking part in the discussions are likely to find the specification changing out from under them in incompatible ways. Vendors interested in implementing this specification before it eventually reaches the Candidate Recommendation stage should join the mailing list mentioned below and take part in the discussions.

The following features are at risk and may be removed:The appendStream method on the sourceBuffer object and algorithm steps that are used only by it. The VideoPlaybackQuality object and the HTMLVideoElement Extensions that use it. The totalFrameDelay attribute on the VideoPlaybackQuality object. The TrackDefault object and its related objects, attributes, methods and algorithms, including: TrackDefaultList, SourceBuffer.trackDefaults, Default track language, Default track label, and Default track kinds. Implementations still must at least include trivial versions of these default track language/label/kinds algorithms that are used by the initialization segment received algorithm. These trivial versions would behave as follows: Trivial default track language and Trivial default track label algorithms must return an empty string, and Trivial default kinds algorithm must return a sequence with a single empty string element in it.

A list of changes is available.

For this specification to exit the Candidate Recommendation stage, two independent implementations as detailed in the CR Exit Criteria (Public Permissive version 3) document will be required to demonstrate each feature using the MSE test suite developed by the HTML Media Extensions WG.

A preliminary implementation report is available. This Candidate Recommendation is expected to advance to Proposed Recommendation no earlier than 10 August 2016.

This document was published by the HTML Media Extensions Working Group as a Candidate Recommendation. This document is intended to become a W3C Recommendation. If you wish to make comments regarding this document, please send them to public-html-media@w3.org (subscribe, archives). W3C publishes a Candidate Recommendation to indicate that the document is believed to be stable and to encourage implementation by the developer community. All comments are welcome.

Publication as a Candidate Recommendation does not imply endorsement by the W3C Membership. This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.

This document was produced by a group operating under the 5 February 2004 W3C Patent Policy. W3C maintains a public list of any patent disclosures made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) must disclose the information in accordance with section 6 of the W3C Patent Policy.

This document is governed by the 1 September 2015 W3C Process Document.