Lex Fridman

Can you speak to the difference between H.264 and AV1 and then X.264 and David?

This is this big step.

Can you help people understand are some of the streaming sites moving more towards that direction of AV1?

Let's be honest.

So we can lay out, let's say, the top five codec container combos would be H.264 inside MP4 containers, AV1 inside MP4 WebM containers, ProRes for nonlinear editing inside MOV containers.

So for people who don't know, I guess ProRes is

There's no or very minimal temporal compression.

And this GOP group of pictures, I think the default for actually FFmpeg for H.264

is like 250 frames, something like this.

And to me, it's just magic.

Like you can predict, you can have a complete frame every... Several seconds, that means.

Several seconds.

And then you can still, you can have this chain of predictions you make.

And the fact that you can, the fact that somebody like me

can use FFmpeg to compress something and not notice that the result still plays back smoothly.

It's like magic.

There's a lot of knobs you can control in this whole process.

There's a lot of really fascinating parameters that I've gotten to know more and more over the years that FFmpeg gives you complete access to.

Maybe you can speak to some of those.

So first of all, obviously, we can lower the resolution.