How can I make a recording in my application while using device stream?

How can we make the camera image of the magic leap no longer mirror-inverted and make a recording in the glasses while streaming the image and sound in an app?

I'm not sure I understand your question. Are you recording the camera image through the system recorder application?

Only one application can access the microphone at a time. So you will not be able to record sound in the system application while you are accessing the microphone in your application. You might be able to work around this by using the ML Recorder API from the MLSDK. You can see the 1.12.0 Unity Example project for information how to use this API.

Thanks for the answer! And yes, recording through the system recorder application.