The Twilio video track with type LocalVideoTrack accepts any video processor that handles the processFrame method. A face mask was applied to the user's face using this method, but it could have been anything! This is where imagination should run wild. Explore the TensorFlow open-source models collection to find many great things. One favorite is Pose Detection; try building another video processor with it! Learn about JEST and write unit tests for all code written in this tutorial to make the app more sustainable.