diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c
index 82381b67a9..7813f4485a 100644
--- a/libavformat/dashenc.c
+++ b/libavformat/dashenc.c
@@ -752,6 +752,7 @@ static int dash_init(AVFormatContext *s)
         avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
         st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
         st->time_base = s->streams[i]->time_base;
+        st->avg_frame_rate = s->streams[i]->avg_frame_rate;
         ctx->avoid_negative_ts = s->avoid_negative_ts;
         ctx->flags = s->flags;