Setting up Composure with Live Footage

In the Composure Quick Start guide. The following is stated. “You could also use Composure for an augmented reality experience where the backplate texture is a video feed from the camera.” Using 4.20, Media Framework and an SDI device, we can bring in live camera feed but are unable to use any of Composure Editor’s tools or Blueprints. Attempting to build everything even in the sample tab still leads to failures where live video data cant be streamed into sequencer.

Is there any explicit documentation or examples of Composure working with live video feed?