diff --git a/libavformat/mov.c b/libavformat/mov.c
index ee44b10435..57d9364ea2 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -3539,7 +3539,7 @@ static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
             av_log(c->fc, AV_LOG_WARNING, "Too large sample offset %u in stts entry %u with count %u in st:%d. Clipping to 1.\n",
                    sample_duration, i, sample_count, st->index);
             sc->stts_data[i].duration = 1;
-            corrected_dts += (delta_magnitude < 0 ? (int64_t)delta_magnitude : 1) * sample_count;
+            corrected_dts = av_sat_add64(corrected_dts, (delta_magnitude < 0 ? (int64_t)delta_magnitude : 1) * sample_count);
         } else {
             corrected_dts += sample_duration * (uint64_t)sample_count;
         }