Nicolas Tizon
Collaboration Tools Engineer
Greater Paris Metropolitan Region France
Summary
👤
Senior🎓
Top SchoolNicolas Tizon is a Collaboration Tools Engineer with 11 years of professional experience applying deep signal and image processing expertise to real-world multimedia and communications systems. Based near Paris, he holds a PhD in Image and Signal Processing and has driven R&D and engineering roles focused on video compression, wireless transmission, and collaboration platforms at RENATER, VITEC, and academic labs. He contributes to open-source telecom projects such as baresip, where he improved audio/video handling, DirectShow support, and DTMF/video frame handling—work that bridges low-level media pipelines with reliable real-time collaboration. Comfortable moving between research and production, he combines rigorous algorithmic background with practical systems engineering to solve interoperability and performance challenges. A less obvious strength is his history of shipping both standards-driven video codec work and hands-on multimedia integrations, which makes him effective at optimizing end-to-end media stacks.
11 years of coding experience
12 years of employment as a software developer
Doctor of Philosophy (PhD), Image and Signal Processing, Doctor of Philosophy (PhD), Image and Signal Processing at Institut national des TélécommunicationsEngineer's degree, Telecommunications, Engineer's degree, Telecommunications at Télécom Bretagne (ex- Enst de Bretagne, école nationale supérieure des télécommunications de Bretagne)
English
Github Skills (10)
sip10
c-language10
sips10
cprogramming-language10
voip10
telephony10
webrtc9
directshow9
audio-processing9
video-processing9
Programming languages (5)
Github contributions (5)
baresip/baresip
Jun 2018 - May 2019
Baresip is a modular SIP User-Agent with audio and video support
Role in this project:
Back-end Developer
Back-end DeveloperContributions:21 commits, 37 PRs, 33 comments in 11 months
Contributions summary:Nicolas primarily focused on enhancing the `baresip` project's audio and video capabilities. They addressed compilation errors and implemented fixes for the DirectShow (dshow) module, including image buffer conversions and pixel format settings. The user also added functionality to send DTMF codes and implemented video frame handling improvements in the vidloop module, including frame rendering in the main thread and video source updates. Furthermore, the user added mediadev support to the audio and video modules.
audiobaresipsipuser-agentvoip
Renater/baresip
Jun 2018 - Jan 2025
Baresip is a modular SIP User-Agent with audio and video support
Contributions:5 PRs, 124 pushes, 53 branches in 6 years 8 months
baresipagentmqttuser-agentaudio
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.