Ecole d'ingénieur et centre de recherche en Sciences du numérique

Analyzing the impact of YouTube delivery policies on user experience

Plissonneau, Louis; Biersack, Ernst W; Juluri, Parikshit

ITC 2012, 24th International Teletraffic Congress (ITC 24), September 4-7, 2012, Krakow, Poland

This paper presents an in-depth study of YouTube video service delivery. We have designed a tool that crawls YouTube videos in order to precisely evaluate the quality of experience (QoE) as perceived by the user. We enrich the main QoE metric, the number of video stalls, with many network measurements and use multiple DNS servers to understand the main factors that impact QoS and QoE. This tool has been used in multiple configurations: first, to understand the main delivery policies of YouTube videos, then to understand the impact of the ISP on these policies and finally, to compare the US and Europe YouTube policies. Our main results are that: (i) geographical proximity does not matter inside Europe or the US, but link cost and ISP-dependent policies do; (ii) usual QoS metrics (RTT) have no impact on QoE (video stall); (iii) QoE is not impacted nowadays (with good access networks) by access capacity but by peering agreements between ISPs and CDNs, and by server load. We also indicate a network monitoring metric that can be used by ISPs to roughly evaluate the QoE of HTTP video streaming of a large set of clients at a reduced computational cost.

Document Bibtex

Titre:Analyzing the impact of YouTube delivery policies on user experience
Type:Conférence
Langue:English
Ville:Krakow
Pays:POLOGNE
Date:
Département:Sécurité numérique
Eurecom ref:3737
Copyright: © ITC. Personal use of this material is permitted. The definitive version of this paper was published in ITC 2012, 24th International Teletraffic Congress (ITC 24), September 4-7, 2012, Krakow, Poland and is available at :
Bibtex: @inproceedings{EURECOM+3737, year = {2012}, title = {{A}nalyzing the impact of {Y}ou{T}ube delivery policies on user experience}, author = {{P}lissonneau, {L}ouis and {B}iersack, {E}rnst {W} and {J}uluri, {P}arikshit}, booktitle = {{ITC} 2012, 24th {I}nternational {T}eletraffic {C}ongress ({ITC} 24), {S}eptember 4-7, 2012, {K}rakow, {P}oland}, address = {{K}rakow, {POLOGNE}}, month = {09}, url = {http://www.eurecom.fr/publication/3737} }
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