HTTP Live Streaming 2nd Edition
draft-pantos-hls-rfc8216bis-08

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Informational                                             R. Pantos, Ed.
Internet-Draft                                                Apple Inc.
Obsoletes: 8216 (if approved)                           October 29, 2020
Intended status: Informational
Expires: May 2, 2021

                    HTTP Live Streaming 2nd Edition
                     draft-pantos-hls-rfc8216bis-08

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 10 of this protocol.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on May 2, 2021.

Copyright Notice

   Copyright (c) 2020 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
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Pantos                     Expires May 2, 2021                  [Page 1]
Internet-Draft       HTTP Live Streaming 2nd Edition        October 2020

   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
       3.1.1.  MPEG-2 Transport Streams  . . . . . . . . . . . . . .   8
       3.1.2.  Fragmented MPEG-4 . . . . . . . . . . . . . . . . . .   8
       3.1.3.  Packed Audio  . . . . . . . . . . . . . . . . . . . .   9
       3.1.4.  WebVTT  . . . . . . . . . . . . . . . . . . . . . . .   9
       3.1.5.  IMSC Subtitles  . . . . . . . . . . . . . . . . . . .  10
     3.2.  Partial Segments  . . . . . . . . . . . . . . . . . . . .  11
   4.  Playlists . . . . . . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  Definition of a Playlist  . . . . . . . . . . . . . . . .  12
     4.2.  Attribute Lists . . . . . . . . . . . . . . . . . . . . .  13
     4.3.  Variable Substitution . . . . . . . . . . . . . . . . . .  14
     4.4.  Playlist Tags . . . . . . . . . . . . . . . . . . . . . .  14
       4.4.1.  Basic Tags  . . . . . . . . . . . . . . . . . . . . .  15
         4.4.1.1.  EXTM3U  . . . . . . . . . . . . . . . . . . . . .  15
         4.4.1.2.  EXT-X-VERSION . . . . . . . . . . . . . . . . . .  15
       4.4.2.  Media or Master Playlist Tags . . . . . . . . . . . .  15
         4.4.2.1.  EXT-X-INDEPENDENT-SEGMENTS  . . . . . . . . . . .  16
         4.4.2.2.  EXT-X-START . . . . . . . . . . . . . . . . . . .  16
         4.4.2.3.  EXT-X-DEFINE  . . . . . . . . . . . . . . . . . .  17
       4.4.3.  Media Playlist Tags . . . . . . . . . . . . . . . . .  18
         4.4.3.1.  EXT-X-TARGETDURATION  . . . . . . . . . . . . . .  18
         4.4.3.2.  EXT-X-MEDIA-SEQUENCE  . . . . . . . . . . . . . .  18
         4.4.3.3.  EXT-X-DISCONTINUITY-SEQUENCE  . . . . . . . . . .  19
         4.4.3.4.  EXT-X-ENDLIST . . . . . . . . . . . . . . . . . .  19
         4.4.3.5.  EXT-X-PLAYLIST-TYPE . . . . . . . . . . . . . . .  19
         4.4.3.6.  EXT-X-I-FRAMES-ONLY . . . . . . . . . . . . . . .  20
         4.4.3.7.  EXT-X-PART-INF  . . . . . . . . . . . . . . . . .  20
         4.4.3.8.  EXT-X-SERVER-CONTROL  . . . . . . . . . . . . . .  21
       4.4.4.  Media Segment Tags  . . . . . . . . . . . . . . . . .  22
         4.4.4.1.  EXTINF  . . . . . . . . . . . . . . . . . . . . .  22
         4.4.4.2.  EXT-X-BYTERANGE . . . . . . . . . . . . . . . . .  23
         4.4.4.3.  EXT-X-DISCONTINUITY . . . . . . . . . . . . . . .  23