Extensible Binary Meta Language
draft-ietf-cellar-ebml-16
The information below is for an old version of the document | |||
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Document | Type | Active Internet-Draft (cellar WG) | |
Authors | Steve Lhomme , Dave Rice , Moritz Bunkus | ||
Last updated | 2020-01-20 (latest revision 2019-12-22) | ||
Replaces | draft-lhomme-cellar-ebml | ||
Stream | IETF | ||
Intended RFC status | Proposed Standard | ||
Formats | pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication (wg milestone: Jun 2019 - Submit specification... ) | |
Document shepherd | Steven Villereal | ||
Shepherd write-up | Show (last changed 2018-12-04) | ||
IESG | IESG state | IESG Evaluation::Revised I-D Needed | |
Consensus Boilerplate | Yes | ||
Telechat date |
Needs a YES. Has enough positions to pass. |
||
Responsible AD | Alexey Melnikov | ||
Send notices to | Steven Villereal <villereal@gmail.com> | ||
IANA | IANA review state | Version Changed - Review Needed |
cellar S. Lhomme Internet-Draft Intended status: Standards Track D. Rice Expires: 24 June 2020 M. Bunkus 22 December 2019 Extensible Binary Meta Language draft-ietf-cellar-ebml-16 Abstract This document defines the Extensible Binary Meta Language (EBML) format as a binary container format designed for audio/video storage. EBML is designed as a binary equivalent to XML and uses a storage- efficient approach to build nested Elements with identifiers, lengths, and values. Similar to how an XML Schema defines the structure and semantics of an XML Document, this document defines how EBML Schemas are created to convey the semantics of an EBML Document. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at https://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on 24 June 2020. Copyright Notice Copyright (c) 2019 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/ license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components Lhomme, et al. Expires 24 June 2020 [Page 1] Internet-Draft EBML December 2019 extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Notation and Conventions . . . . . . . . . . . . . . . . . . 4 3. Structure . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4. Variable Size Integer . . . . . . . . . . . . . . . . . . . . 7 4.1. VINT_WIDTH . . . . . . . . . . . . . . . . . . . . . . . 7 4.2. VINT_MARKER . . . . . . . . . . . . . . . . . . . . . . . 7 4.3. VINT_DATA . . . . . . . . . . . . . . . . . . . . . . . . 7 4.4. VINT Examples . . . . . . . . . . . . . . . . . . . . . . 8 5. Element ID . . . . . . . . . . . . . . . . . . . . . . . . . 9 6. Element Data Size . . . . . . . . . . . . . . . . . . . . . . 11 6.1. Data Size Format . . . . . . . . . . . . . . . . . . . . 11 6.2. Unknown Data Size . . . . . . . . . . . . . . . . . . . . 12 6.3. Data Size Values . . . . . . . . . . . . . . . . . . . . 14 7. EBML Element Types . . . . . . . . . . . . . . . . . . . . . 15 7.1. Signed Integer Element . . . . . . . . . . . . . . . . . 15 7.2. Unsigned Integer Element . . . . . . . . . . . . . . . . 16 7.3. Float Element . . . . . . . . . . . . . . . . . . . . . . 16 7.4. String Element . . . . . . . . . . . . . . . . . . . . . 16 7.5. UTF-8 Element . . . . . . . . . . . . . . . . . . . . . . 16 7.6. Date Element . . . . . . . . . . . . . . . . . . . . . . 17 7.7. Master Element . . . . . . . . . . . . . . . . . . . . . 17 7.8. Binary Element . . . . . . . . . . . . . . . . . . . . . 17 8. EBML Document . . . . . . . . . . . . . . . . . . . . . . . . 18 8.1. EBML Header . . . . . . . . . . . . . . . . . . . . . . . 18 8.2. EBML Body . . . . . . . . . . . . . . . . . . . . . . . . 18 9. EBML Stream . . . . . . . . . . . . . . . . . . . . . . . . . 19 10. EBML Versioning . . . . . . . . . . . . . . . . . . . . . . . 19 10.1. EBML Header Version . . . . . . . . . . . . . . . . . . 19 10.2. EBML Document Version . . . . . . . . . . . . . . . . . 19 11. Elements semantic . . . . . . . . . . . . . . . . . . . . . . 19 11.1. EBML Schema . . . . . . . . . . . . . . . . . . . . . . 19 11.1.1. EBML Schema Example . . . . . . . . . . . . . . . . 20 11.1.2. <EBMLSchema> Element . . . . . . . . . . . . . . . . 21Show full document text