QualityReportingBlackDetectConfig Field Type Repeated Description frame_threshold double Fraction of black pixels to count as a "black frame". Default 0.98. min_black_frames uint32 Hysteresis: consecutive black frames before alert. Default 3. min_clear_frames uint32 Hysteresis: consecutive clear frames before recovery. Default 3. Member of Message Description QualityReportingUpdateConfig QualityReportingVideoConfig QualityReportingAudioConfig QualityReportingBlackFrameDetected