diff --git a/libavformat/utils.c b/libavformat/utils.c
index 223d567f75..271502327f 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -680,7 +680,10 @@ static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
             *pnum = st->codec->time_base.num;
             *pden = st->codec->time_base.den;
             if (pc && pc->repeat_pict) {
-                *pnum = (*pnum) * (1 + pc->repeat_pict);
+                if (*pnum > INT_MAX / (1 + pc->repeat_pict))
+                    *pden /= 1 + pc->repeat_pict;
+                else
+                    *pnum *= 1 + pc->repeat_pict;
             }
         }
         break;