Assessing the Carbon Reduction Potential for Video Streaming from Short-Term Coding Changes

Daniel Schien, Paul J S Shabajee, Huseyin Burak Akyol, Luke Benson, Angeliki Katsenou

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

With the effects of climate change globally manifesting, all sectors of the economy and society are aiming to reduce their carbon emissions. Increasing attention is given to the carbon footprint of video streaming.

Innovation and optimisation of video codecs can affect the energy consumption in all system parts. Previous work has identified opportunities to reduce electricity consumption, yet methods to reliably estimate the carbon reduction potential from interventions on video streaming systems are currently lacking. In particular, not enough consideration is given to the complex interactions between changes to a service and operational and structural effects at internet-scale systems, and that manifest at varying time scales. This introduces uncertainty.

In this text, we review the state of knowledge and propose a marginal approach for the assessment of short-term decarbonisation potential of interventions. We illustrate this with a simplified example intervention, in which we evaluate the temporary reduction of the video resolution of user-generated content video on demand from 1080p to 720p in a fixed ladder scenario over one month in the UK. We find that the carbon reductions mainly come from savings at user devices, but are overall negligible at 0.5gCO2e per day per typical laptop-viewer.
Original languageEnglish
Title of host publication16th International Conference on Quality of Multimedia Experience (QoMEX)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Publication statusAccepted/In press - 26 Mar 2024
Event16th International Conference on Quality of Multimedia Experience (QoMEX’24) - Karlshamn, Sweden
Duration: 18 Jun 202420 Jun 2024
https://qomex2024.itec.aau.at/

Publication series

NameInternational Workshop on Quality of Multimedia Experience, QoMEx
PublisherIEEE
ISSN (Print)2372-7179
ISSN (Electronic)2472-7814

Conference

Conference16th International Conference on Quality of Multimedia Experience (QoMEX’24)
Country/TerritorySweden
CityKarlshamn
Period18/06/2420/06/24
Internet address

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