Screen Black and Can Hear but Not See Subscriber


When in a video session, I can hear the subscriber but I can't see them. I see only a black screen.

Applies To

  • Video API
  • Video Quality


  1. Make sure that the subscriber.subscribeToVideo() is set to true.
  2. Make sure that the Publisher on the other side has publishVideo() set to true.


If you are using a Routed Session, it is possible that due to bandwidth limitation, the Media Server has triggered Audio-Only Fallback.

Additional Information

For more information, see How do I know if I have gone into Audio-Only Fallback mode?

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