TypeError: Failed to execute 'createObjectURL' on 'URL': No function was found that matched the signature provided.

[mchmdarvan]

Hi,
this error happen when i try to access the camera, my code file was same like the example.
I'm still beginner, so i hope you guys can help me.
Thanks

[ghost]

Yes me 2

[mehran-akb]

i have this problem too

[notshekhar]

me too

[notshekhar]

https://github.com/zxing-js/library I found this library, great library for QR code and barcode scanner

[fabionaspolini]

It seems that this project is stopped.
I fixed bug at my fork and published with new package name on npm.

npm install --save instascan-new

For React projects, I did fix these packages:
My fork: https://github.com/fabionaspolini/react-instascan

To install new packages:
npm install react-instascan-new instascan-umd-new --save

[oscarmartins]

Fix:

Attach your stream directly to srcObject property instead of using URL.createObjectURL function.
recomendation: https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL#Using_object_URLs_for_media_streams

const instascan = require('instascan');

const args = { video: document.getElementById('preview') };

window.URL.createObjectURL = (stream) => {
            args.video.srcObject = stream;
            return stream;
};

const scanner = new instascan.Scanner(args);

...