diff --git a/examples/resizeHorizontal.json5 b/examples/resizeHorizontal.json5
index 7ce2420..46096b5 100644
--- a/examples/resizeHorizontal.json5
+++ b/examples/resizeHorizontal.json5
@@ -1,4 +1,5 @@
 {
+  width: 320, height: 240,
   outPath: './resizeHorizontal.mp4',
   defaults: {
     transition: null,