diff --git a/fftools/ffmpeg_mux_init.c b/fftools/ffmpeg_mux_init.c
index e84fa9719f..37d626add6 100644
--- a/fftools/ffmpeg_mux_init.c
+++ b/fftools/ffmpeg_mux_init.c
@@ -1012,7 +1012,6 @@ static int streamcopy_init(const Muxer *mux, OutputStream *ost, AVDictionary **e
         else
             sar = par->sample_aspect_ratio;
         ost->st->sample_aspect_ratio = par->sample_aspect_ratio = sar;
-        ost->st->avg_frame_rate = ist->st->avg_frame_rate;
         ost->st->r_frame_rate = ist->st->r_frame_rate;
         break;
         }
diff --git a/tests/ref/fate/time_base b/tests/ref/fate/time_base
index 23875d1fb8..ae96232e60 100644
--- a/tests/ref/fate/time_base
+++ b/tests/ref/fate/time_base
@@ -1 +1 @@
-b28d4ca13029fdc80a114b56467be9d7
+69ffc45e19ab070bc3e964d7b718fe53