Limits for the global video consumption

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Type de contrat : CDD

Niveau de diplôme exigé : Bac + 5 ou équivalent

Fonction : Ingénieur scientifique contractuel

A propos du centre ou de la direction fonctionnelle

The Inria Centre at Rennes University is one of Inria's eight centres and has more than thirty research teams. The Inria Centre is a major and recognized player in the field of digital sciences. It is at the heart of a rich R&D and innovation ecosystem: highly innovative PMEs, large industrial groups, competitiveness clusters, research and higher education players, laboratories of excellence, technological research institute, etc.

Contexte et atouts du poste

Type: Research engineer position

Place:  Inria Center of University of Rennes in the team-project COMPACT

Duration: 9 months

Collaboration during the project:
- Collaboration with Anne-Cécile Orgerie (Magelan team at IRISA)
- Collaboration with the GIS Marsouin (Human and Social Sciences)

Mission confiée

Context: Working towards a responsible and resilient digital future naturally means questioning a priori the relevance of any rising technology. But what about existing technologies? Trying to make them less energy-intensive proves insufficient, because of the rebound effect this implies. So we need to define limits for their use.

Goal of the project: In this project, we will explore the conditions for setting such limits, particularly in the case of video streams (which account for a significant proportion of CO2 emissions from the digital world). More specifically, we will study the levers (technical, regulatory, legislative, etc.) that can be put in place, as well as their effectiveness and acceptance by citizens.
This inter-disciplinary question will be addressed in close collaboration with researchers in the Human and Social Sciences.

Bibliography:
- T. Maugey, Towards digital sobriety: why improving the energy efficiency of video streaming is not enough, IEEE MMSP, Poitiers, France, Sept. 2023.
- Demarty, Claire-Hélène, Laurent Blondé, and Olivier Le Meur. "Display power modeling for energy consumption control." 2023 IEEE International Conference on Image Processing (ICIP). IEEE, 2023.
- H. Ferreboeuf, F. Berthoud, P. Bihouix, P. Fabre, D. Kaplan, L. Lefèvre et al., “Lean ICT-towards digital sobriety,” Report for the Think Tank The Shift Project, vol. 6, 2019.
- M. Efoui-Hess, “Climate crisis: The unsustainable use of online video,” The Shift Project: Paris, France, 2019.
- G. Guennebaud, A. Bugeau, and A. Dudouit, “Assessing VoD pressure on network power consumption,” arXiv preprint arXiv:2304.03151, 2023.

Principales activités

Detailed tasks:
- model the energy spent over the whole video processing chain during different delivery scenarios.
- identify the high-energetic parts in this pipeline and some related levers that could be put in place to reduce their costs
- discuss with the Human and Social Siences researchers for setting the  foundations of experimentations and inter-discplinary research directions

Compétences

Technical skills and level required : expertise in signal and image processing, strong knowledge in image and video compression

Languages : english and french

Relational skills : integration in a research team

 

Avantages

  • Subsidized meals
  • Partial reimbursement of public transport costs
  • Possibility of teleworking (90 days per year) and flexible organization of working hours
  • Partial payment of insurance costs

Rémunération

Monthly gross salary from 2695 euros based on experience