diff --git a/libavformat/mov.c b/libavformat/mov.c
index 34ca8095c2..f7b5ec7a35 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -9006,7 +9006,7 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
         pkt->flags |= AV_PKT_FLAG_DISCARD;
     }
     if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
-        pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
+        pkt->pts = av_sat_add64(pkt->dts, av_sat_add64(sc->dts_shift, sc->ctts_data[sc->ctts_index].duration));
         /* update ctts context */
         sc->ctts_sample++;
         if (sc->ctts_index < sc->ctts_count &&