Operational Considerations for Streaming Media
draft-ietf-mops-streaming-opcons-02

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MOPS                                                          J. Holland
Internet-Draft                                 Akamai Technologies, Inc.
Intended status: Informational                                  A. Begen
Expires: 13 January 2021                                 Networked Media
                                                              S. Dawkins
                                                     Tencent America LLC
                                                            12 July 2020

             Operational Considerations for Streaming Media
                  draft-ietf-mops-streaming-opcons-02

Abstract

   This document provides an overview of operational networking issues
   that pertain to quality of experience in delivery of video and other
   high-bitrate media over the internet.

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
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   This Internet-Draft will expire on 13 January 2021.

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   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Holland, et al.          Expires 13 January 2021                [Page 1]
Internet-Draft             Media Streaming Ops                 July 2020

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Notes for Contributors and Reviewers  . . . . . . . . . .   3
       1.1.1.  Venues for Contribution and Discussion  . . . . . . .   3
       1.1.2.  Template for Contributions  . . . . . . . . . . . . .   3
       1.1.3.  History of Public Discussion  . . . . . . . . . . . .   4
   2.  Bandwidth Provisioning  . . . . . . . . . . . . . . . . . . .   5
     2.1.  Scaling Requirements for Media Delivery . . . . . . . . .   5
       2.1.1.  Video Bitrates  . . . . . . . . . . . . . . . . . . .   5
       2.1.2.  Virtual Reality Bitrates  . . . . . . . . . . . . . .   5
     2.2.  Path Requirements . . . . . . . . . . . . . . . . . . . .   6
     2.3.  Caching Systems . . . . . . . . . . . . . . . . . . . . .   6
     2.4.  Predictable Usage Profiles  . . . . . . . . . . . . . . .   6
     2.5.  Unpredictable Usage Profiles  . . . . . . . . . . . . . .   7
     2.6.  Extremely Unpredictable Usage Profiles  . . . . . . . . .   8
   3.  Adaptive Bitrate  . . . . . . . . . . . . . . . . . . . . . .   9
     3.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .   9
     3.2.  Segmented Delivery  . . . . . . . . . . . . . . . . . . .   9
       3.2.1.  Idle Time between Segments  . . . . . . . . . . . . .   9
       3.2.2.  Head-of-Line Blocking . . . . . . . . . . . . . . . .  10
     3.3.  Unreliable Transport  . . . . . . . . . . . . . . . . . .  10
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   7.  Informative References  . . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   As the internet has grown, an increasingly large share of the traffic
   delivered to end users has become video.  Estimates put the total
   share of internet video traffic at 75% in 2019, expected to grow to
   82% by 2022.  What's more, this estimate projects the gross volume of
   video traffic will more than double during this time, based on a
   compound annual growth rate continuing at 34% (from Appendix D of
   [CVNI]).

   In many contexts, video traffic can be handled transparently as
   generic application-level traffic.  However, as the volume of video
   traffic continues to grow, it's becoming increasingly important to
   consider the effects of network design decisions on application-level
   performance, with considerations for the impact on video delivery.
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