diff --git a/libavformat/dump.c b/libavformat/dump.c
index 5e9a03185f..06bafc272d 100644
--- a/libavformat/dump.c
+++ b/libavformat/dump.c
@@ -615,7 +615,7 @@ void av_dump_format(AVFormatContext *ic, int index,
     if (!is_output) {
         av_log(NULL, AV_LOG_INFO, "  Duration: ");
         if (ic->duration != AV_NOPTS_VALUE) {
-            int hours, mins, secs, us;
+            int64_t hours, mins, secs, us;
             int64_t duration = ic->duration + (ic->duration <= INT64_MAX - 5000 ? 5000 : 0);
             secs  = duration / AV_TIME_BASE;
             us    = duration % AV_TIME_BASE;
@@ -623,7 +623,7 @@ void av_dump_format(AVFormatContext *ic, int index,
             secs %= 60;
             hours = mins / 60;
             mins %= 60;
-            av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
+            av_log(NULL, AV_LOG_INFO, "%02"PRId64":%02"PRId64":%02"PRId64".%02"PRId64"", hours, mins, secs,
                    (100 * us) / AV_TIME_BASE);
         } else {
             av_log(NULL, AV_LOG_INFO, "N/A");