Camera Crop

CameraCrop.ts

@component
export class CameraCrop extends BaseScriptComponent {
  @input
  nonCropImage: Image;
  @input
  croppedImage: Image;
  //Generate this through Asset Browser > Screen Crop Texture
  @input
  screenCropCameraTexture: Texture;

  private cameraTexture: Texture;
  private cameraTextureControl: CameraTextureProvider;
  private cameraModule: CameraModule = require("LensStudio:CameraModule");

  onAwake() {
    //Requesting Camera needs to be done in OnStartEvent
    this.createEvent("OnStartEvent").bind(() => {
      // Create a camera request to get the default color camera (i.e. Left vs Right camera)
      let imageRequest = CameraModule.createCameraRequest();
      imageRequest.cameraId = CameraModule.CameraId.Default_Color;

      // Request the camera and get the camera texture
      this.cameraTexture = this.cameraModule.requestCamera(imageRequest);
      //Need to call onNewFrame to start camera streaming remain streaming
      this.cameraTextureControl = this.cameraTexture
        .control as CameraTextureProvider;
      this.cameraTextureControl.onNewFrame.add(() => {});

      //Setting crop texture to use the camera texture
      let screenCropTextureControl = this.screenCropCameraTexture
        .control as CropTextureProvider;
      screenCropTextureControl.inputTexture = this.cameraTexture;
      this.croppedImage.mainPass.baseTex = this.screenCropCameraTexture;

      // Set the non-cropped image to use the camera texture
      this.nonCropImage.mainPass.baseTex = this.cameraTexture;
    });
  }
}

Configure your Screen Crop Texture

Result: