iOS Controlling Video Capture FPS rate

videocapturefps.m

- (void)captureOutput:(AVCaptureOutput *)captureOutput
didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
       fromConnection:(AVCaptureConnection *)connection
{
    
    if (connection.isVideoMinFrameDurationSupported && connection.videoMinFrameDuration.timescale != FPS) {
        connection.videoMinFrameDuration = CMTimeMake(1, FPS);
    }
    if (connection.isVideoMaxFrameDurationSupported && connection.videoMaxFrameDuration.timescale != FPS) {
        connection.videoMaxFrameDuration = CMTimeMake(1, FPS);
    }
}