diff --git a/libavdevice/v4l2.c b/libavdevice/v4l2.c
index d356a11bf0..6726b0b89f 100644
--- a/libavdevice/v4l2.c
+++ b/libavdevice/v4l2.c
@@ -808,6 +808,7 @@ static int v4l2_set_parameters(AVFormatContext *s1)
     }
     s1->streams[0]->avg_frame_rate.num = tpf->denominator;
     s1->streams[0]->avg_frame_rate.den = tpf->numerator;
+    s1->streams[0]->r_frame_rate = s1->streams[0]->avg_frame_rate;
 
     return 0;
 }