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Jean-Baptiste Kempf

πŸ‘€ Speaker
850 total appearances

Appearances Over Time

Podcast Appearances

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

The fact it works so smoothly every day is kind of miraculous in some ways.

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

You can have a stream that works across the world on their decoder versus one in the US versus one here of different manufacturers, and they produce bit for bit exactly the same material.

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

that's quite remarkable, and do quite complex things and getting more and more complex and still be a bit exact.

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

There's a lot of work that goes into that.

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

They're different.

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

They're control systems challenges, whereas some are more mathematical.

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

I think there's a difference.

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

I think actually the interesting one is the audio.

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

That's true.

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

You can kind of notice when they move from full fat AAC to the... There are compressed versions of AAC that use spectral band replication.

12614.91 View full episode β†’
Lex Fridman Podcast
#496 – FFmpeg: The Incredible Technology Behind Video on the Internet

You can kind of see it goes a bit tinny.

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

And that up and down is very jarring.

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

The video side...

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

is a lot smoother and there's less notice.

12629.45 View full episode β†’
Lex Fridman Podcast
#496 – FFmpeg: The Incredible Technology Behind Video on the Internet

It's really the audio.

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

You can definitely feel it from when it's moved you from a different audio profile to one or the other.

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

I don't know.

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

We're surprisingly tolerant at skipping audio glitches.

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

I'm surprised people I know who are not video engineers, how tolerant they are, how tolerant they are to watching sports at 30 FPS, for example, whereas it should really be 60 FPS.

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

The world is a lot more tolerant to that, but audio people are very, it's an immediate feedback mechanism of all.