HTTP Live Streaming
draft-pantos-http-live-streaming-08

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Informational                                             R. Pantos, Ed.
Internet-Draft                                                    W. May
Intended status: Informational                                Apple Inc.
Expires: September 24, 2012                               March 23, 2012

                          HTTP Live Streaming
                  draft-pantos-http-live-streaming-08

Abstract

   This document 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 4 of this protocol.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.  This document may not be modified,
   and derivative works of it may not be created, and it may not be
   published except as an Internet-Draft.

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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on September 24, 2012.

Copyright Notice

   Copyright (c) 2012 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
   (http://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 Informational Internet Draft is submitted as an RFC Editor

Pantos & May           Expires September 24, 2012               [Page 1]
Internet-Draft             HTTP Live Streaming                March 2012

   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 . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Summary  . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  The Playlist file  . . . . . . . . . . . . . . . . . . . . . .  4
     3.1.  Introduction . . . . . . . . . . . . . . . . . . . . . . .  4
     3.2.  Attribute Lists  . . . . . . . . . . . . . . . . . . . . .  5
     3.3.  Standard Tags  . . . . . . . . . . . . . . . . . . . . . .  6
       3.3.1.  EXTM3U . . . . . . . . . . . . . . . . . . . . . . . .  6
       3.3.2.  EXTINF . . . . . . . . . . . . . . . . . . . . . . . .  6
     3.4.  New Tags . . . . . . . . . . . . . . . . . . . . . . . . .  7
       3.4.1.  EXT-X-BYTERANGE  . . . . . . . . . . . . . . . . . . .  7
       3.4.2.  EXT-X-TARGETDURATION . . . . . . . . . . . . . . . . .  7
       3.4.3.  EXT-X-MEDIA-SEQUENCE . . . . . . . . . . . . . . . . .  8
       3.4.4.  EXT-X-KEY  . . . . . . . . . . . . . . . . . . . . . .  8
       3.4.5.  EXT-X-PROGRAM-DATE-TIME  . . . . . . . . . . . . . . .  9
       3.4.6.  EXT-X-ALLOW-CACHE  . . . . . . . . . . . . . . . . . .  9
       3.4.7.  EXT-X-PLAYLIST-TYPE  . . . . . . . . . . . . . . . . . 10
       3.4.8.  EXT-X-ENDLIST  . . . . . . . . . . . . . . . . . . . . 10
       3.4.9.  EXT-X-MEDIA  . . . . . . . . . . . . . . . . . . . . . 10
         3.4.9.1.  Rendition Groups . . . . . . . . . . . . . . . . . 11
       3.4.10. EXT-X-STREAM-INF . . . . . . . . . . . . . . . . . . . 12
         3.4.10.1. Alternative Renditions . . . . . . . . . . . . . . 13
       3.4.11. EXT-X-DISCONTINUITY  . . . . . . . . . . . . . . . . . 14
       3.4.12. EXT-X-I-FRAMES-ONLY  . . . . . . . . . . . . . . . . . 14
       3.4.13. EXT-X-I-FRAME-STREAM-INF . . . . . . . . . . . . . . . 15
       3.4.14. EXT-X-VERSION  . . . . . . . . . . . . . . . . . . . . 16
   4.  Media segments . . . . . . . . . . . . . . . . . . . . . . . . 16
   5.  Key files  . . . . . . . . . . . . . . . . . . . . . . . . . . 17
     5.1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . 17
     5.2.  IV for AES-128 . . . . . . . . . . . . . . . . . . . . . . 17
   6.  Client/Server Actions  . . . . . . . . . . . . . . . . . . . . 17
     6.1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . 17
     6.2.  Server Process . . . . . . . . . . . . . . . . . . . . . . 18
       6.2.1.  Introduction . . . . . . . . . . . . . . . . . . . . . 18
       6.2.2.  Sliding Window Playlists . . . . . . . . . . . . . . . 20
       6.2.3.  Encrypting media segments  . . . . . . . . . . . . . . 20
       6.2.4.  Providing variant streams  . . . . . . . . . . . . . . 21
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