DJI MSDK v4 FPV video stream

Hi, I'm trying to retreive the FPV video stream using MSDK v4. When I add a video listener and then look up the listeners, none are listed. Is there any known reasons why it would never register the listener? `addVideoDataListener` does return true, so I'm not sure why it's not working. 

standardVideoFeeder = VideoFeeder.getInstance().provideTranscodedVideoFeed();
standardVideoFeeder.addVideoDataListener(videoDataListener);
Log.d(TAG, "getListeners: " + standardVideoFeeder.getListeners());

2025-02-05 11:41:18.361 28568-28792 DjiFpvView              com.test.sdkv4.debug              D  Physical source: dji.internal.camera.dcb$uio@5ce5565 status: FPV_CAM
2025-02-05 11:41:18.361 28568-29087 DjiFpvView              com.test.sdkv4.debug              D  getListeners: []