diff --git a/libavformat/utils.c b/libavformat/utils.c
index a3b389591da0232a4bd52413c0762bc37cc86b1b..d19e4270bfe7f4131bc9e84a6d3426f2689d4295 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -939,11 +939,11 @@ static void update_initial_durations(AVFormatContext *s, AVStream *st,
             }
         }
         if(pktl && pktl->pkt.dts != st->first_dts) {
-            av_log(s, AV_LOG_DEBUG, "first_dts %"PRIi64" not matching first dts %"PRIi64" in que\n", st->first_dts, pktl->pkt.dts);
+            av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s in que\n", av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts));
             return;
         }
         if(!pktl) {
-            av_log(s, AV_LOG_DEBUG, "first_dts %"PRIi64" but no packet with dts in ques\n", st->first_dts);
+            av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in ques\n", av_ts2str(st->first_dts));
             return;
         }
         pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;