diff --git a/src/modules/avformat/resolution_scale.yml b/src/modules/avformat/resolution_scale.yml
index 2cd07b83f..cf8217428 100644
--- a/src/modules/avformat/resolution_scale.yml
+++ b/src/modules/avformat/resolution_scale.yml
@@ -47,3 +47,9 @@ vignette:
 zoompan:
   x: 1.0
   y: 1.0
+
+fillborders:
+  left: 1.0
+  right: 1.0
+  top: 1.0
+  bottom: 1.0