HTTP Live Streaming 2nd Edition
draft-pantos-hls-rfc8216bis-05
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Informational R. Pantos, Ed.
Internet-Draft Apple Inc.
Obsoletes: 8216 (if approved) September 23, 2019
Intended status: Informational
Expires: March 26, 2020
HTTP Live Streaming 2nd Edition
draft-pantos-hls-rfc8216bis-05
Abstract
This document obsoletes RFC 8216. It describes a protocol for
transferring unbounded streams of multimedia data. It specifies the
data format of the files and the actions to be taken by the server
(sender) and the clients (receivers) of the streams. It describes
version 8 of this protocol.
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 March 26, 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.
This document may not be modified, and derivative works of it may not
be created, except to format it for publication as an RFC or to
translate it into languages other than English.
Pantos Expires March 26, 2020 [Page 1]
Internet-Draft HTTP Live Streaming 2nd Edition September 2019
This Informational Internet Draft is submitted as an RFC Editor
Contribution and/or non-IETF Document (not as a Contribution, IETF
Contribution, nor IETF Document) in accordance with BCP 78 and BCP
79.
Table of Contents
1. Introduction to HTTP Live Streaming . . . . . . . . . . . . . 5
2. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Media Segments . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Supported Media Segment Formats . . . . . . . . . . . . . 7
3.2. MPEG-2 Transport Streams . . . . . . . . . . . . . . . . 8
3.3. Fragmented MPEG-4 . . . . . . . . . . . . . . . . . . . . 8
3.4. Packed Audio . . . . . . . . . . . . . . . . . . . . . . 9
3.5. WebVTT . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.6. IMSC Subtitles . . . . . . . . . . . . . . . . . . . . . 10
4. Playlists . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1. Definition of a Playlist . . . . . . . . . . . . . . . . 11
4.2. Attribute Lists . . . . . . . . . . . . . . . . . . . . . 12
4.3. Variable Substitution . . . . . . . . . . . . . . . . . . 13
4.4. Playlist Tags . . . . . . . . . . . . . . . . . . . . . . 14
4.4.1. Basic Tags . . . . . . . . . . . . . . . . . . . . . 14
4.4.1.1. EXTM3U . . . . . . . . . . . . . . . . . . . . . 14
4.4.1.2. EXT-X-VERSION . . . . . . . . . . . . . . . . . . 14
4.4.2. Media Segment Tags . . . . . . . . . . . . . . . . . 15
4.4.2.1. EXTINF . . . . . . . . . . . . . . . . . . . . . 15
4.4.2.2. EXT-X-BYTERANGE . . . . . . . . . . . . . . . . . 15
4.4.2.3. EXT-X-DISCONTINUITY . . . . . . . . . . . . . . . 16
4.4.2.4. EXT-X-KEY . . . . . . . . . . . . . . . . . . . . 16
4.4.2.5. EXT-X-MAP . . . . . . . . . . . . . . . . . . . . 18
4.4.2.6. EXT-X-PROGRAM-DATE-TIME . . . . . . . . . . . . . 19
4.4.2.7. EXT-X-GAP . . . . . . . . . . . . . . . . . . . . 20
4.4.2.8. EXT-X-BITRATE . . . . . . . . . . . . . . . . . . 20
4.4.3. Media Metadata Tags . . . . . . . . . . . . . . . . . 20
4.4.3.1. EXT-X-DATERANGE . . . . . . . . . . . . . . . . . 20
4.4.3.1.1. Mapping SCTE-35 into EXT-X-DATERANGE . . . . 22
4.4.4. Media Playlist Tags . . . . . . . . . . . . . . . . . 24
4.4.4.1. EXT-X-TARGETDURATION . . . . . . . . . . . . . . 24
4.4.4.2. EXT-X-MEDIA-SEQUENCE . . . . . . . . . . . . . . 25
4.4.4.3. EXT-X-DISCONTINUITY-SEQUENCE . . . . . . . . . . 25
4.4.4.4. EXT-X-ENDLIST . . . . . . . . . . . . . . . . . . 26
4.4.4.5. EXT-X-PLAYLIST-TYPE . . . . . . . . . . . . . . . 26
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