Buffer impacted streams

The Buffer impacted streams metric counts sessions in which the player entered a buffer state at least once. The metric is a session-level boolean — multiple buffer events within the same session count as one impacted stream. For total buffer volume, use Buffer events.

How this metric is calculated

The media backend sets mediaReporting.qoeDataDetails.hasBufferImpactedStreams = true the first time a buffer start event is received during the session. The metric is reported on the close call.