diff --git a/Makefile b/Makefile
index 9903d45..467fb5d 100644
--- a/Makefile
+++ b/Makefile
@@ -25,4 +25,6 @@ pip: ## Install with pip
 pipx: ## Install with pipx
 	pipx install -f .
 
+hatchling: ## Run hatchling
+	hatchling build
 
diff --git a/tsmark/video_annotator.py b/tsmark/video_annotator.py
index 0ed9a2e..a613d23 100755
--- a/tsmark/video_annotator.py
+++ b/tsmark/video_annotator.py
@@ -509,7 +509,7 @@ class Marker:
             if h < 0:
                 y = y + h
                 h = -h
-            cropstr = ["-filter:vf", f"crop={w}:{h}:{x}:{y}"]
+            cropstr = ["-vf", f"crop={w}:{h}:{x}:{y}"]
         self.stamps.sort()
         print("# Timestamps:")
         audio_str = AUDIO_COPY if self.opts.ffmpeg_copy else AUDIO_COMPRESS