diff --git a/cmd/root.go b/cmd/root.go
index 66e424a..ad7b530 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -28,6 +28,8 @@ import (
 
 var transition bool
 var softCutDuration float64
+var width int32
+var height int32
 
 /*
  * checkStdin checks if any data has been passed in through stdin and returns
@@ -157,7 +159,7 @@ func milkbucket(cmd *cobra.Command, args []string) {
 	}
 	defer sdl.Quit()
 
-	m, err := newMilkDropWindow(800, 600, args, softCutDuration)
+	m, err := newMilkDropWindow(width, height, args, softCutDuration)
 	if err != nil {
 		cobra.CheckErr(err)
 	}
@@ -205,4 +207,6 @@ func init() {
 	// when this action is called directly.
 	rootCmd.Flags().BoolVarP(&transition, "transition", "t", false, "smoothly transition between presets")
 	rootCmd.Flags().Float64VarP(&softCutDuration, "soft-cut-duration", "s", 3, "time in seconds for a soft transition between two presets (use with --transition)")
+	rootCmd.Flags().Int32Var(&width, "width", 800, "window width")
+	rootCmd.Flags().Int32Var(&height, "height", 600, "window height")
 }