diff --git a/h222_defns.h b/h222_defns.h
index c744ef0..1582765 100644
--- a/h222_defns.h
+++ b/h222_defns.h
@@ -82,7 +82,7 @@
    (s)==0x03?"11172-3 audio (MPEG-1)":				\
    (s)==0x04?"13818-3 audio (MPEG-2)":				\
    (s)==0x05?"H.222.0/13818-1  private sections":		\
-   (s)==0x06?"H.222.0/13818-1 PES private data":                \
+   (s)==0x06?"H.222.0/13818-1 PES private data (maybe Dolby/AC-3 in DVB)": \
    (s)==0x07?"13522 MHEG":					\
    (s)==0x08?"H.222.0/13818-1 Annex A - DSM CC":		\
    (s)==0x09?"H.222.1":						\
@@ -107,7 +107,7 @@
    (s)==0x42?"AVS Video":                                       \
    (0x1C < (s)) && ((s) < 0x7E)?"H.220.0/13818-1 reserved":     \
    (s)==0x7F?"IPMP stream":					\
-   (s)==0x81?"User private":	                        	\
+   (s)==0x81?"User private (commonly Dolby/AC-3 in ATSC)":     	\
    (0x80 <= (s)) && ((s) <= 0xFF)?"User private":		\
    "Unrecognised")
 
diff --git a/ts2es.c b/ts2es.c
index a3f9b27..3936b3f 100644
--- a/ts2es.c
+++ b/ts2es.c
@@ -267,7 +267,7 @@ static int extract_pid_packets(TS_reader_p  tsreader,
         if (written != 1)
         {
           fprintf(stderr,"### Error writing TS packet - units written = %d\n",
-                  written);
+                  (int)written);
           return 1;
         }
       }