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This specification defines the byte stream formats for use with the Media Source Extensions™ specification [MEDIA-SOURCE].
This section describes the status of this document at the time of its publication. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at https://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 related open bugs in the GitHub repository of the Media Source Extensions™ specification.
This document was published by the Media Working Group as a Draft Registry using the Registry track.
Publication as a Draft Registry does not imply endorsement by W3C and its Members.
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.
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This document is governed by the 03 November 2023 W3C Process Document.
This registry is intended to enhance interoperability among implementations and users of SourceBuffer
objects described in the
Media Source Extensions™ specification. In particular, this registry provides the means (1) to identify
and avoid MIME-type collisions among byte stream formats, and (2) to disclose information about byte stream formats accepted by MSE
implementations to promote interoperability.
The registry maintains a mapping between MIME-type/subtype pairs and byte stream format specifications. The byte stream format specifications describe the
structure and semantics of byte streams accepted by SourceBuffer
objects
created with the associated MIME-type/subtype pair.
This registry is not intended to include any information on whether a byte stream format is encumbered by intellectual property claims. Implementors and users are advised to seek appropriate legal counsel in this matter if they intend to implement or use a specific byte stream format.
[[generate timestamps flag]]
value that MUST be used by
SourceBuffer
when handling the byte stream format.MIME type/subtype | Public Specification(s) | Generate Timestamps Flag |
---|---|---|
audio/webm video/webm |
WebM Byte Stream Format [MSE-BYTE-STREAM-FORMAT-WEBM] | false |
audio/mp4 video/mp4 |
ISO BMFF Byte Stream Format [MSE-BYTE-STREAM-FORMAT-ISOBMFF] | false |
audio/mp2t video/mp2t |
MPEG-2 TS Byte Stream Format [MSE-BYTE-STREAM-FORMAT-MP2T] | false |
audio/mpeg audio/aac |
MPEG Audio Byte Stream Format [MSE-BYTE-STREAM-FORMAT-MPEG-AUDIO] | true |
As well as sections marked as non-normative, all authoring guidelines, diagrams, examples, and notes in this specification are non-normative. Everything else in this specification is normative.
The key words MAY, MUST, and SHOULD in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.