webqr.com with android g chrome front cam to rear c

[jeffreyho92]

how can i change from front cam to rear cam?

[DeadlySystem]

You can't with the current code. You need to use MediaStreamTrack.getSources to identify the individual cameras and then provide the cam's ID when accessing the webcam. But that standard is not too established yet. It works on Chrome for Android though, I created a browser-based QR code scanner with this library which allows you to select the cam, but it's not public (at least for now).

[rubensalcedo]

DeadlySystem, can I have the code that you mention to test in our web application? Thank you.

[DeadlySystem]

Okay @rubensalcedo see here: https://gist.github.com/DeadlySystem/304d3da710a70ac0545c This is compiled TypeScript, i.e. JavaScript. Please read the gist's description. Also, note that you will need to use requirejs for this to work in the posted form. You may freely use and adapt it, but when you share it please link to this Github issue. This is just a snippet from a large project, and of course it is untested in this form. But you should be able to find the important concepts.

[d00nn1]

hi i have the same problem. I do not know how can I turn rear camera (environment) if they could help me I would be very grateful i want to start automatically the rear camera bicos the qr scan is for a smartphone i found another QR scan but thets is the best of all

[DeadlySystem]

Just look at my gist from my previous comment... On line 33 starts the code that does the magic. It is used to fill a , but you could easily make it select a camera automatically on line 61. I haven't tested this in a while though, it could be that the APIs have changed meanwhile.

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