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#496 – FFmpeg: The Incredible Technology Behind Video on the Internet

#496 – FFmpeg: The Incredible Technology Behind Video on the Internet

Lex Fridman Podcast
May 6, 2026 4h 24m
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About this episode

<p>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.<br /> Thank you for listening ❤ Check out our sponsors: <a href="https://lexfridman.com/sponsors/ep496-sc">https://lexfridman.com/sponsors/ep496-sc</a><br /> See below for timestamps, transcript, and to give feedback, submit questions, contact Lex, etc.</p> <p><b>Transcript:</b><br /> <a href="https://lexfridman.com/ffmpeg-transcript">https://lexfridman.com/ffmpeg-transcript</a></p> <p><b>CONTACT LEX:</b><br /> <b>Feedback</b> &#8211; give feedback to Lex: <a href="https://lexfridman.com/survey">https://lexfridman.com/survey</a><br /> <b>AMA</b> &#8211; submit questions, videos or call-in: <a href="https://lexfridman.com/ama">https://lexfridman.com/ama</a><br /> <b>Hiring</b> &#8211; join our team: <a href="https://lexfridman.com/hiring">https://lexfridman.com/hiring</a><br /> <b>Other</b> &#8211; other ways to get in touch: <a href="https://lexfridman.com/contact">https://lexfridman.com/contact</a></p> <p><b>EPISODE LINKS:</b><br /> FFmpeg on X: <a href="https://x.com/FFmpeg">https://x.com/FFmpeg</a><br /> FFmpeg: <a href="https://ffmpeg.org/">https://ffmpeg.org/</a><br /> VideoLAN (VLC): <a href="https://www.videolan.org/">https://www.videolan.org/</a><br /> VideoLAN on X: <a href="https://x.com/videolan">https://x.com/videolan</a><br /> Jean-Baptiste&#8217;s Website: <a href="https://jbkempf.com/">https://jbkempf.com/</a><br /> Jean-Baptiste&#8217;s LinkedIn: <a href="https://www.linkedin.com/in/jbkempf/">https://www.linkedin.com/in/jbkempf/</a><br /> Jean-Baptiste&#8217;s GitHub: <a href="https://github.com/jbkempf">https://github.com/jbkempf</a><br /> Kieran&#8217;s X: <a href="https://x.com/kierank_">https://x.com/kierank_</a><br /> Kieran&#8217;s LinkedIn: <a href="https://bit.ly/3OORhmC">https://bit.ly/3OORhmC</a><br /> Kieran&#8217;s GitHub: <a href="https://github.com/kierank">https://github.com/kierank</a></p> <p><b>SPONSORS:</b><br /> To support this podcast, check out our sponsors &#38; get discounts:<br /> <b>Larridin:</b> Measure AI adoption in your business.<br /> Go to <a href="https://lexfridman.com/s/larridin-ep496-sc">https://larridin.com</a><br /> <b>Blitzy:</b> AI agent for large enterprise codebases.<br /> Go to <a href="https://lexfridman.com/s/blitzy-ep496-sc">https://blitzy.com/lex</a><br /> <b>BetterHelp:</b> Online therapy and counseling.<br /> Go to <a href="https://lexfridman.com/s/betterhelp-ep496-sc">https://betterhelp.com/lex</a><br /> <b>Fin:</b> AI agent for customer service.<br /> Go to <a href="https://lexfridman.com/s/fin-ep496-sc">https://fin.ai/lex</a><br /> <b>LMNT:</b> Zero-sugar electrolyte drink mix.<br /> Go to <a href="https://lexfridman.com/s/lmnt-ep496-sc">https://drinkLMNT.com/lex</a><br /> <b>Perplexity:</b> AI-powered answer engine.<br /> Go to <a href="https://lexfridman.com/s/perplexity-ep496-sc">https://perplexity.ai/</a></p> <p><b>OUTLINE:</b><br /> (00:00) &#8211; Introduction<br /> (03:00) &#8211; Sponsors, Comments, and Reflections<br /> (10:48) &#8211; Weirdest things VLC opens<br /> (15:12) &#8211; How video playback works<br /> (24:33) &#8211; Video codecs and containers<br /> (35:20) &#8211; FFmpeg explained<br /> (56:20) &#8211; Linus Torvalds<br /> (1:00:59) &#8211; Turning down millions to keep VLC ad-free<br /> (1:15:17) &#8211; FFmpeg &#38; Google drama<br /> (1:34:31) &#8211; FFmpeg developers<br /> (1:41:08) &#8211; VLC and FFmpeg<br /> (1:45:42) &#8211; History of FFmpeg<br /> (1:48:59) &#8211; Reverse engineering codecs<br /> (2:02:14) &#8211; FFmpeg testing<br /> (2:06:21) &#8211; Assembly code (handwritten)<br /> (2:30:39) &#8211; Rust programming language<br /> (2:39:55) &#8211; FFmpeg and Libav fork<br /> (2:48:17) &#8211; Open source burnout<br /> (2:56:04) &#8211; x264 and internet video<br /> (3:09:20) &#8211; Video compression basics<br /> (3:16:17) &#8211; CIA and fake VLC<br /> (3:26:52) &#8211; Ultra low latency streaming<br /> (3:44:20) &#8211; AV2 codec and video patents<br /> (3:54:12) &#8211; VLC backdoors<br /> (4:04:27) &#8211; Video archiving<br /> (4:11:04) &#8211; Future of FFmpeg and VLC</p>

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