Remeber the pcr pid the program comes from

src/streaming.h

@@ -51,6 +51,8 @@ typedef struct streaming_start {
 
   source_info_t ss_si;
 
+  uint16_t ss_pcr_pid;
+
   streaming_start_component_t ss_components[0];
 
 } streaming_start_t;

src/transports.c

@@ -813,6 +813,7 @@ transport_build_stream_start(th_transport_t *t)
   t->tht_setsourceinfo(t, &ss->ss_si);
 
   ss->ss_refcount = 1;
+  ss->ss_pcr_pid = t->tht_pcr_pid;
   return ss;
 }