Is the main code always downloaded from CDN?

[howtomakeaturn]

Hi, thanks for the great library! It's really awesome!

I have a question: Is the main code always downloaded from CDN?

In the page:

https://ffmpegwasm.netlify.app/docs/getting-started/usage

The main library code is downloaded from CDN.

And these two lines are commented out:

// import { FFmpeg } from '@ffmpeg/ffmpeg';
// import { fetchFile, toBlobURL } from '@ffmpeg/util';

But in another page:

https://ffmpegwasm.netlify.app/docs/getting-started/installation/

As @ffmpeg/ffmpeg spawns a web worker, you cannot import @ffmpeg/ffmpeg from CDN like unpkg. It is recommended to download it and host it on your server most of the time.

It's a bit confusing to me.

Should I host it or just use CDN?

Why those two lines are commented out in the tutorial page?

Do these 2 official pages contradictory to each other?

Thanks! 🙏🙏🙏