diff --git a/subprojects/gst-plugins-bad/ext/avtp/gstavtpcrfbase.c b/subprojects/gst-plugins-bad/ext/avtp/gstavtpcrfbase.c
index f2ac6c1e11..b349cf1448 100644
--- a/subprojects/gst-plugins-bad/ext/avtp/gstavtpcrfbase.c
+++ b/subprojects/gst-plugins-bad/ext/avtp/gstavtpcrfbase.c
@@ -451,7 +451,8 @@ calculate_average_period (GstAvtpCrfBase * avtpcrfbase,
     }
 
     data->past_periods[past_periods_iter] =
-        first_pkt_tstamp - data->last_received_tstamp;
+        (first_pkt_tstamp - data->last_received_tstamp) /
+        data->timestamp_interval;
     data->last_received_tstamp = first_pkt_tstamp;
     data->last_seqnum = seqnum;
   } else {
diff --git a/subprojects/gst-plugins-bad/ext/avtp/gstavtpcrfbase.h b/subprojects/gst-plugins-bad/ext/avtp/gstavtpcrfbase.h
index 87e8c64c0a..d14d5b9c3c 100644
--- a/subprojects/gst-plugins-bad/ext/avtp/gstavtpcrfbase.h
+++ b/subprojects/gst-plugins-bad/ext/avtp/gstavtpcrfbase.h
@@ -54,6 +54,9 @@ struct _GstAvtpCrfThreadData
   GstClockTime *past_periods;
   int past_periods_iter;
   int periods_stored;
+  /** The time in ns between two events. The type of the event is depending on
+   *  the CRF type: Audio sample, video frame sync, video line sync, ...
+   */
   GstClockTime average_period;
   GstClockTime current_ts;
   GstClockTime last_received_tstamp;