public void StartRecordingVideo() {
        Initialize();
        recordingVideo = true;
        cameraManager = (CameraManager) this.getSystemService(Context.CAMERA_SERVICE);



    try {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
            String[] cameraIDs = cameraManager.getCameraIdList();
            //LogAllCameraInfo();
            if (cameraIDs != null)
            {
                for(int x = 0; x < cameraIDs.length; x++)
                {
                    Log.d(LOG_ID, "ID: " + cameraIDs[x]);
                }
            }

            cameraManager.openCamera(deviceCameraID, cameraStateCallback, handler);

            Log.d(LOG_ID, "Successfully opened camera");
        }
        else
        {
            throw new IllegalAccessException();
        }

    }
    catch (Exception e)
    {
        recordingVideo = false;
        Log.e(LOG_ID, "Error during record video start: " + e.getMessage());
    }
}
 private void Initialize()
    {
        videoRecordThread = new HandlerThread("video_capture");
        videoRecordThread.start();
        handler = new Handler((videoRecordThread.getLooper()));

        try
        {
            vidRecorder = new MediaRecorder();
            vidRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE);
           vidRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
            vidRecorder.setVideoFrameRate(30);
            vidRecorder.setCaptureRate(30);

            vidRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
            vidRecorder.setVideoEncodingBitRate(10000000);

            vidRecorder.setVideoSize(1920, 1080);
            String videoFilename = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)+ File.separator + System.currentTimeMillis() + ".mp4";
            vidRecorder.setOutputFile(videoFilename);

            Log.d(LOG_ID, "Starting video: " + videoFilename);
            vidRecorder.prepare();
        }
        catch (Exception e)
        {
            Log.e(LOG_ID, "Error during Initialize: " + e.getMessage());

        }
    }

@Override
        public void onReady(CameraCaptureSession session) {
            Log.d(LOG_ID, "onReady: ");
            super.onReady(session);
            try {
                CaptureRequest.Builder builder = deviceCamera.createCaptureRequest(CameraDevice.TEMPLATE_RECORD);

                builder.addTarget(vidRecorder.getSurface());
                CaptureRequest request = builder.build();
                session.setRepeatingRequest(request, null, handler);
                vidRecorder.start();
            } catch (CameraAccessException e) {
                Log.d(LOG_ID, "Error on Ready: " + e.getMessage());

            }
        }




        @Override
        public void onSurfacePrepared(CameraCaptureSession session, Surface surface) {
            Log.d(LOG_ID, "onSurfacePrepared: ");

            super.onSurfacePrepared(session, surface);
        }




    @Override
    public void onOpened(CameraDevice camera) {
        Log.d(LOG_ID, "onOpened: ");
        deviceCamera = camera;

        try {
            camera.createCaptureSession(Arrays.asList(vidRecorder.getSurface()), recordSessionStateCallback, handler);
        } catch (CameraAccessException e) {
            Log.d(LOG_ID, "onOpened: " + e.getMessage());
        }
    }