diff --git a/src/input/mpegts.h b/src/input/mpegts.h
index b669f033..6ac7de1d 100644
--- a/src/input/mpegts.h
+++ b/src/input/mpegts.h
@@ -578,6 +578,8 @@ mpegts_service_t *mpegts_mux_find_service(mpegts_mux_t *ms, uint16_t sid);
 int mpegts_mux_instance_start
   ( mpegts_mux_instance_t **mmiptr );
 
+int mpegts_mux_instance_weight ( mpegts_mux_instance_t *mmi );
+
 int mpegts_mux_set_tsid ( mpegts_mux_t *mm, uint16_t tsid );
 int mpegts_mux_set_onid ( mpegts_mux_t *mm, uint16_t onid );
 int mpegts_mux_set_crid_authority ( mpegts_mux_t *mm, const char *defauth );
diff --git a/src/input/mpegts/mpegts_mux.c b/src/input/mpegts/mpegts_mux.c
index 2bdc32bb..1813ebd3 100644
--- a/src/input/mpegts/mpegts_mux.c
+++ b/src/input/mpegts/mpegts_mux.c
@@ -116,6 +116,33 @@ mpegts_mux_instance_start
   return 0;
 }
 
+int
+mpegts_mux_instance_weight ( mpegts_mux_instance_t *mmi )
+{
+  int w = 0;
+  const service_t *s;
+  const th_subscription_t *ths;
+  mpegts_input_t *mi = mmi->mmi_input;
+  lock_assert(&mi->mi_delivery_mutex);
+
+  /* Direct subs */
+  LIST_FOREACH(ths, &mmi->mmi_subs, ths_mmi_link) {
+    w = MAX(w, ths->ths_weight);
+  }
+
+  /* Service subs */
+  LIST_FOREACH(s, &mi->mi_transports, s_active_link) {
+    mpegts_service_t *ms = (mpegts_service_t*)s;
+    if (ms->s_dvb_mux == mmi->mmi_mux) {
+      LIST_FOREACH(ths, &s->s_subscriptions, ths_service_link) {
+        w = MAX(w, ths->ths_weight);
+      }
+    }
+  }
+
+  return w;
+}
+
 /* ****************************************************************************
  * Class definition
  * ***************************************************************************/