Taxonomy of Issues in Internet Media
draft-jholland-mops-taxonomy-00

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Mops                                                          J. Holland
Internet-Draft                                 Akamai Technologies, Inc.
Intended status: Informational                             July 07, 2019
Expires: January 8, 2020

                  Taxonomy of Issues in Internet Media
                    draft-jholland-mops-taxonomy-00

Abstract

   This document provides a taxonomy of networking issues that pertain
   to quality of experience in delivery of video or 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
   Task Force (IETF).  Note that other groups may also distribute
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   This Internet-Draft will expire on January 8, 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
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   described in the Simplified BSD License.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Bandwidth Provisioning  . . . . . . . . . . . . . . . . . . .   3
     2.1.  Scaling Requirements for Media Delivery . . . . . . . . .   3
       2.1.1.  Video Bitrates  . . . . . . . . . . . . . . . . . . .   3
       2.1.2.  Virtual Reality Bitrates  . . . . . . . . . . . . . .   3
     2.2.  Path Requirements . . . . . . . . . . . . . . . . . . . .   4
     2.3.  Caching Systems . . . . . . . . . . . . . . . . . . . . .   4
     2.4.  Predictable Usage Profiles  . . . . . . . . . . . . . . .   4
   3.  Adaptive Bit Rate . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  Segmented Delivery  . . . . . . . . . . . . . . . . . . .   5
       3.2.1.  Idle Time Between Segments  . . . . . . . . . . . . .   5
       3.2.2.  Head of Line Blocking . . . . . . . . . . . . . . . .   6
     3.3.  Unreliable Transport  . . . . . . . . . . . . . . . . . .   6
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   7
     6.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   8

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.

   This document aims to provide a taxonomy of networking issues as they
   relate to quality of experience in internet video delivery.  The
   focus is on capturing characteristics of video delivery that have
   surprised network designers or transport experts without specific
   video expertise, since these highlight key differences between common
   assumptions in existing networking documents and observations of
   video delivery issues in practice.

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