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ffmpegwsm-reactjs-expressjs

Making FfmpegWasm WebAssembly working with cross-origin enabled.

I'm trying to learn WebAssembly with FFmpeg in JS, I have faced an issue of
Your browser doesn't support SharedArrayBuffer Issue #102 I followed the mentioned solution and implemented it here, and so far seems working fine, I have not finished it yet, switched to JavaFX but wanted to share my finding.

as mentioned above #102 ffmpegwasm needs to have Cross-Origin-Opener-Policy & Cross-Origin-Embedder-Policy restricted on the server side, while many ReactJS may need an access to an external js scripts served by different origin i.e hosted checkout page of Stripe or Google Analysis JS etc. Here I have cloned 2 micro-reactjs-frontends [wasm + ffmpeg] from 2 github repos + Expressjs app that renders both micro-frontends.

  • first micro-frontend run ffmpeg you can import any. mp4 video it will convert it to mp3

  • second micro-frontend run normal ReactJS with cross-origin enabled for testing stripe hosted checkout. Once you attach your Stripe API key and API secret from Stripe dashboard it should work

Build the 2 micro-frontend apps + copy build folders to one folder:

from root folder, run npm run build-ffmpeg

Run the ExpressJS app

from backend run npm run start

This should build 2 frontend, add them to build-all folder which served by 2 expressjs endpoints.

  • http://localhost:7777/fffmpeg
    res.header('Cross-Origin-Opener-Policy', 'same-origin');

    res.header('Cross-Origin-Embedder-Policy', 'require-corp');

  • http://localhost:7777/payment res.header("Access-Control-Allow-Origin", "*");

    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");

Notes & Thanks

https://github.com/rwieruch/react-express-stripe

  • Tested with Chrome Version 101.0.4951.64 (Official Build) (x86_64)

To test with firefox ffmpeg endpoint needs to add this header:

res.header('Cross-Origin-Embedder-Policy', 'require-corp')