You can pass a stream chunk as you can see in the example at:
https://tfhub.dev/tensorflow/movinet/a5/stream/kinetics-600/classification/2 6
You need to access to the camera with your code (Opencv, TFIO, Video4Linux etc…)
Instead If you want to run this on Android you need to use TF lite and write your own demo/example.
You can also try to use Mediapipe if you like:

  
      

      Medium – 21 Feb 21
  

  
    

MediaPipe with custom tflite model 3

  Getting started with MediaPipe and using it with your own tflite model

  
    Reading time: 9 min read