narration when streaming TV - XFinity

All of a sudden for no reason some of the shows I watch online or through the Xfinity app have a very annoying narration that is describing the actions of the characters in the show. I don't know why this is happening. Is there any way to shut this off? or mute the narration? or at least turn it down so that it isn't drowning out the dialogue?

This question, "narration when streaming TV," is about XFinity-Comcast TV television equipment.

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