CODEWITHSUNDEEP
androidopencv
michael
michael

Reputation: 3

set frame rate in JavaCameraView

i would like to set frame rate to 1 fps using JavaCameraView. When i turn on camera the frame rate is about 20 fps. My purpose is to change this value to 1 fps after click on the button.

Could someone help me ? I've searched a lot on the Internet, but i could not find nothing interesting ( in the documentation also http://docs.opencv.org/java/org/opencv/android/JavaCameraView.html). I'm using JavaCameraView because i am working with openCV.

Upvotes: 0

Views: 9323

Answers (1)

reynev
reynev

Reputation: 336

You can manipulate camera preview fps by creating class that extends JavaCameraView and change parameters of mCamera Object:

public class CustomizableCameraView extends JavaCameraView {

    public CustomizableCameraView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public void setPreviewFPS(double min, double max){
        Camera.Parameters params = mCamera.getParameters();
        params.setPreviewFpsRange((int)(min*1000), (int)(max*1000));
        mCamera.setParameters(params);
    }
}

similar to OpenCV Tutorial 3 - Camera Control.

But you have to check if fps range you will set is in mCamera.getSupportedPreviewFpsRange() - reference. In my case [min:10000, max:31000], so theoretically minimum is 10fps.

Upvotes: 3

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