ชักว่าว Inverse - มุมมองการช่วยตัวเองที่แตกต่างกันเล็กน้อย

In this free version of this video there is another view in the background. The colours of this view are inverted. Black therefore appears white. Hence the title of the video. The purchased version contains the main view without effects. Instead, it fills the image and has no cropping.