Access multiple cameras at the same time in Flutter

Question

I have a Flutter app which uses the camera package to display the user's front camera.

This is done by using a CameraController, for example:

final List<CameraDescription> cameras = await availableCameras();
var frontCamera = cameras[0];

final CameraController cameraController = CameraController(
      frontCamera,
      ResolutionPreset.medium,
      enableAudio: enableAudio,
      imageFormatGroup: ImageFormatGroup.jpeg,
    );

// Return a live feed of the user's camera
return CameraPreview(cameraController);

The above is working correctly. However when I use cameras[1] to display an image of the back camera at the same time, the back camera image is blank:

final List<CameraDescription> cameras = await availableCameras();
var frontCamera = cameras[0];
var backCamera = cameras[1];

final CameraController frontCameraController = CameraController(
      frontCamera,
      ResolutionPreset.medium,
      enableAudio: enableAudio,
      imageFormatGroup: ImageFormatGroup.jpeg,
    );

final CameraController backCameraController = CameraController(
      backCamera,
      ResolutionPreset.medium,
      enableAudio: enableAudio,
      imageFormatGroup: ImageFormatGroup.jpeg,
    );


return Column(
    children: [
        // Front camera is shown correctly
        CameraPreview(frontCameraController),

        // Back camera image is blank
        CameraPreview(backCameraController),
    ],
);

How do I show the image from two cameras at the same time with Flutter?

Does this answer your question? [Accessing Front and Back Camera in Android at the same time](https://stackoverflow.com/questions/10679261/accessing-front-and-back-camera-in-android-at-the-same-time) — Sphinx, Mar 23 '21 at 01:02
I can pretty much guarantee that the flutter camera package isn't designed to handle multiple cameras at once. If you need that functionality I think you might have to find a different package or write one yourself/adapt from the flutter plugin... — rmtmckenzie, Mar 23 '21 at 07:44

Access multiple cameras at the same time in Flutter

0 Answers0