X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavfilter%2Faf_join.c;h=4f86e1355841706f85d608f7f64b8fd13f725966;hb=061337a073236cb0bc6c56036f50f883d2887681;hp=cf5131e8dcaf0409d40983383ef978133f056f93;hpb=b855b570c811d208bfadeb4e140bee90c1598e72;p=ffmpeg

diff --git a/libavfilter/af_join.c b/libavfilter/af_join.c
index cf5131e8dca..4f86e135584 100644
--- a/libavfilter/af_join.c
+++ b/libavfilter/af_join.c
@@ -485,6 +485,9 @@ static int activate(AVFilterContext *ctx)
                 return 0;
             }
         }
+        if (!s->input_frames[0]) {
+            return 0;
+        }
     }
 
     nb_samples = s->input_frames[0]->nb_samples;