diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 25c462d9c9..7991ada384 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -551,7 +551,13 @@ static int mov_write_dvc1_structs(MOVTrack *track, uint8_t *buf)
     put_bits(&pbc, 1, !slices); /* no slice code */
     put_bits(&pbc, 1, 0); /* no bframe */
     put_bits(&pbc, 1, 0); /* reserved */
-    put_bits32(&pbc, track->enc->time_base.den); /* framerate */
+
+    /* framerate */
+    if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)
+        put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);
+    else
+        put_bits32(&pbc, 0xffffffff);
+
     flush_put_bits(&pbc);
 
     av_free(unescaped);