-diff -urN a/libavfilter/formats.c b/libavfilter/formats.c
---- a/libavfilter/formats.c 2019-12-02 08:48:03.073361317 -0700
-+++ b/libavfilter/formats.c 2019-12-02 08:52:32.155270978 -0700
-@@ -107,11 +107,13 @@
+diff --git a/libavfilter/formats.c b/libavfilter/formats.c
+index de4315369d..f430908343 100644
+--- a/libavfilter/formats.c
++++ b/libavfilter/formats.c
+@@ -107,11 +107,13 @@ AVFilterFormats *ff_merge_formats(AVFilterFormats *a, AVFilterFormats *b,