How to ensure good videoconferencing

General information

  • Check that your microphone works with a minimum level of noise (especially computer fan)
  • Make sure your webcam is up and running and that the latest drivers are installed
  • Close any software using the microphone or webcam other than those currently used for videoconferencing (restart if necessary)
  • Find a Room
    • Sufficiently soundproofed to limit noise pollution
    • Sufficiently illuminated to guarantee the quality of the image
    • Where you will not be disturbed for the duration of the exchange
  • Connect to Ethernet (if possible from a professional or institutional network)
  • Test your internet connection below (Minimum required 1Mb / s sending, ping less than 100ms)

Videoconferencing services

This website uses HTML5 technologies such as WebRTC to capture the image and sound and transmit it very effectively in P2P. The site requires only a recent browser and no registration (except to claim a room). One click and most people can attend the videoconference. I recommend using Chrome (or a recent Webkit browser).

If you are not sure about your installation where it does not work try to get closer to the above criteria and download this script file for Windows. It installs chocolatey (a package manager for Windows) as well as the latest version of Google Chrome and opens the page on the room reserved for LIRIS as well as the plugin necessary for the optimal operation of the site.
Here is the code of the script if needed :
@echo off
@powershell -NoProfile -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString(''))" && SET "PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin"
cinst googlechrome -y
cup all -y
start chrome "" ""


This proprietary software also allows videoconferencing with good reliability. The official client is available on most platforms. It is also possible to use the web version (in beta). Note however:

  • The need to create an account to use the service
  • The data passes through an American server (Patriot Act)
  • The official client contains advertisements
  • The client is known to badly interact with other software, especially on access to the microphone and the webcam


For this service I prefer to refer to the official documentation. Note that during videoconferences in an academic setting the use of this service is highly recommended.

Antoine Gréa

About Antoine Gréa

Passionné de sciences et d'informatique depuis toujours, je cherche à lier l'élégance à l'utilité en poussant toujours plus loin l’innovation. Je suis ingénieur en embarqué et réseau et je poursuit une carrière académique en intelligence artificielle et robotique afin de peut-être un jour créer une intelligence artificielle générale.