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Comment by jackbeck | Hacker News Reader

Hey HN, This is the first of many media oriented tools I plan on creating that are focused on user privacy. With this tool, you can extract audio from any video. Currently it only supports Chrome or Chromium based browser seeing as the underlying tech uses SharedArrayBuffer.

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> Currently it only supports Chrome or Chromium based browser seeing as the underlying tech uses SharedArrayBuffer

...which Firefox supports. You already properly cross-origin isolate your website, so it is already available on it.

There seems to be an issue with compiling FFmpeg to wasm which prevents it from working on Firefox

Funny to see this mentioned. Just this morning I was struggling to get ffmpeg-wasm working on Firefox. It should theoretically be possible with HTTPS and configured headers:

  Cross-Origin-Opener-Policy: same-origin
  Cross-Origin-Embedder-Policy: require-corp

Related links:

Does not work in Firefox 79+ because SharedArrayBuffer is undefined - https://github.com/ffmpegwasm/ffmpeg.wasm/issues/106

SharedArrayBuffer: Planned changes to shared memory - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

Yeah, I get an error saying something like f.asm is undefined and the maintainer is MIA. I’m taking a look at creating a form of the project and seeing what can be done at some point.

I was super disappointed when Apple removed support for SharedWorkers…. Seems SharedArrayBuffer could have easily been part of Safari.

I’m working on a solution for this, I hope to have this working cross browser within a week.

I have a version up that in theory should support Safari (both desktop and mobile). The only limitation at the moment is that there's no progress indicator.

Edit: limitation is gone, it should work 100% now

> ... that are focused on user privacy. ... Currently it only supports Chrome or Chromium

To me, that is an obvious contradiction.

Believe me, I feel the same way. I launched the first version of this tool to gauge interest. As we speak a new version has gone up with complete cross-browser support. Although it isn’t easy that the browser with the most privacy issues has the most features...

That's a feature of Google's web dominance - they can churn out tons of features which means their competitors have to expend most of their productive output just to keep parity.

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