AVCaptureVideoPreviewLayer smooth orientation rotation

Question

I\'m trying to disable any discernable orientation rotation to an AVCaptureVideoPreviewLayer while still maintaining rotation for any subviews. AVCaptureVideoPreviewLayer does h

Answer 1

You should use CATransform3DMakeRotation which is meant for Layers, like it has been mentioned on the comments:

For instance:

float degreesToRotate = 90.0; //Degrees you want to rotate
self.previewLayer.transform = CATransform3DMakeRotation(degreesToRotate / 180.0 * M_PI, 0.0, 0.0, 1.0);

In my case, being "self.previewLayer" the layer to rotate. Have in mind that you should clip it to it's container view's bounds afterwards:

self.previewLayer.frame = self.view.bounds;

. . .

EDIT: If you are going to rotate as a result of the device being rotated (willAnimateRotationToInterfaceOrientation) you should make the transformation like this:

[CATransaction begin];
    [CATransaction setAnimationDuration:duration];
    [CATransaction setAnimationTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
    //**Perform Transformation here**
    [CATransaction commit];

This way, the layer will rotate as the view does.