#496 – FFmpeg: The Incredible Technology Behind Video on the Internet
Lex Fridman Podcast
Lex Fridman
4.7 • 13.6K Ratings
🗓️ 6 May 2026
⏱️ 264 minutes
🧾️ Download transcript
Summary
Jean-Baptiste Kempf is lead developer of VLC and president of VideoLAN. Kieran Kunhya is a longtime FFmpeg contributor, codec engineer, and the person behind the now-infamous FFmpeg account on X.
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Transcript:
https://lexfridman.com/ffmpeg-transcript
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EPISODE LINKS:
FFmpeg on X: https://x.com/FFmpeg
FFmpeg: https://ffmpeg.org/
VideoLAN (VLC): https://www.videolan.org/
VideoLAN on X: https://x.com/videolan
Jean-Baptiste’s Website: https://jbkempf.com/
Jean-Baptiste’s LinkedIn: https://www.linkedin.com/in/jbkempf/
Jean-Baptiste’s GitHub: https://github.com/jbkempf
Kieran’s X: https://x.com/kierank_
Kieran’s LinkedIn: https://bit.ly/3OORhmC
Kieran’s GitHub: https://github.com/kierank
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OUTLINE:
(00:00) – Introduction
(03:00) – Sponsors, Comments, and Reflections
(10:48) – Weirdest things VLC opens
(15:12) – How video playback works
(24:33) – Video codecs and containers
(35:20) – FFmpeg explained
(56:20) – Linus Torvalds
(1:00:59) – Turning down millions to keep VLC ad-free
(1:15:17) – FFmpeg & Google drama
(1:34:31) – FFmpeg developers
(1:41:08) – VLC and FFmpeg
(1:45:42) – History of FFmpeg
(1:48:59) – Reverse engineering codecs
(2:02:14) – FFmpeg testing
(2:06:21) – Assembly code (handwritten)
(2:30:39) – Rust programming language
(2:39:55) – FFmpeg and Libav fork
(2:48:17) – Open source burnout
(2:56:04) – x264 and internet video
(3:09:20) – Video compression basics
(3:16:17) – CIA and fake VLC
(3:26:52) – Ultra low latency streaming
(3:44:20) – AV2 codec and video patents
(3:54:12) – VLC backdoors
(4:04:27) – Video archiving
(4:11:04) – Future of FFmpeg and VLC
Transcript
Click on a timestamp to play from that location
| 0:00.0 | The following is a conversation all about FFEMPEG and VLC with Jean-Baptiste Kempf and Karen Kunya. |
| 0:08.6 | FFMPEG is an open source software system that is the invisible backbone behind YouTube, Netflix, Chrome, VLC, Discord, |
| 0:17.5 | and basically every platform that touches video or audio on the internet. |
| 0:24.3 | It can decode and code, transcode, stream, and play, almost any video or audio format ever created. |
| 0:33.3 | To me, it is one of the most incredible software systems ever developed, and it's all done |
| 0:39.8 | by volunteers. VLC is also a legendary piece of software. It is an open source media player |
| 0:47.3 | that plays basically anything you throw at it, any format, any platform, no ads, no tracking. |
| 0:53.8 | It has been downloaded over six billion times, |
| 0:57.3 | and again, for me, it had been one of my favorite pieces of software ever, with the most legendary |
| 1:04.2 | logo, which I, of course, had to honor in this conversation by wearing the VLC traffic cone hat the whole time. |
| 1:14.5 | So again, above all else, thank you to the incredible volunteer engineers who put their |
| 1:19.6 | heart and soul into this code that has been used and loved by billions of people. |
| 1:25.2 | Thank you. |
| 1:26.6 | And about the two great engineers and human beings I'm talking to |
| 1:31.1 | in this episode, Jean-Baptiste is the president of Videoland and is a key figure behind VLC |
| 1:39.1 | and FFMPEG. Kieran is a longtime Kodak engineer, FFFNPeg contributor, and the man behind the now infamous |
| 1:48.1 | FFMPEG account on Twitter X that I recommend everybody follow for the memes and for the unapologetic |
| 1:56.7 | celebration of open source and great low-level software engineering. |
| 2:03.2 | Let me also say that it's inspiring and humbling that so much of modern civilization |
| 2:08.9 | rests on software built by people who are not chasing fame or money, but are obsessed |
| 2:15.6 | with the craft of engineering. |
| 2:21.4 | We live in a world where billions of people consume video every day without ever thinking about the invisible machinery underneath it. |
... |
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