"Talk is cheap. Send patches" - FFmpeg | Lex Fridman Podcast
In this closing segment of a Lex Fridman podcast, the creators of FFmpeg and VLC discuss their favorite tweets, notable real-world deployments of their software, and share a philosophy of living without regret. The conversation highlights the remarkable reach of open-source software, from Mars rovers to CERN's Large Hadron Collider.
Summary
The conversation opens with a discussion of memorable tweets from the FFmpeg and VLC communities. Two standout tweets are highlighted: 'Talk is cheap, send patches,' which reflects the open-source ethos that software only gets built when someone actually does the work, and 'FFmpeg - nothing is beyond our reach,' which was inspired by a US military satellite patch motto.
The guests then discuss the extraordinary places their software has been deployed. FFmpeg is notably used by the Mars 2020 rover to compress pictures, a fact backed by a published paper. The rover team deliberately sought commercial off-the-shelf technology, and FFmpeg made the cut, making it a 'multi-planetary open source library.' VLC similarly appears in surprising contexts: Formula 1 paddocks use it to play live feeds, and both the European Space Agency and SpaceX have been spotted using it to monitor launches.
One of the most memorable deployment stories involves CERN's Large Hadron Collider. In 2010, the guest visited CERN with a colleague named Laurent because VLC was being used to monitor cameras along the 27 km ring, streaming analog camera feeds over CERN's multicast network. They resolved the technical issue in about an hour, and as a reward, were given a full tour of CERN's facilities, including areas housing antimatter and colliders — a deeply meaningful experience given the guest's physics background.
The conversation closes on a philosophical note about regret. The guest expresses that he regrets no tweets, invoking the French song 'Je ne regrette rien' and arguing that regrets are 'a tax on your mind.' The sentiment is echoed with a reference to a Johnny Depp quote about hate being 'a very expensive emotion.' Lex Fridman closes the episode with gratitude for the software, the community, and the guests' willingness to speak with him.
Key Insights
- FFmpeg is used by the Mars 2020 rover to compress pictures, as the rover team deliberately prioritized commercial off-the-shelf technology, making FFmpeg a 'multi-planetary open source library.'
- The tweet 'Talk is cheap, send patches' is cited as a favorite because it embodies the open-source principle that software doesn't appear from the ether — it only gets built when someone actually does the work.
- VLC was used at CERN to monitor analog cameras along the 27 km LHC ring by streaming feeds over CERN's multicast network, and the guest personally visited in 2010 to fix a configuration issue that was resolved in about an hour.
- VLC has been spotted in use by Formula 1 teams in paddocks for live feeds, the European Space Agency, and SpaceX for monitoring rocket launches, illustrating the software's unexpected reach across high-stakes industries.
- The guest argues that regret is 'a tax on your mind' — one should learn from mistakes but not dwell on them, since without a time machine there is no utility in regret.
Topics
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