My newbie stupid question of the day: Why?

Trying to follow a tutorial. MoviefileinTOP followed by a fitTOP ​​and then a CircleTOP. In the tutorial the circle has the checkerboard as a background, but for me it’s the picture. I can’t for the life of me find the difference. Where am I turning wrong?

In parameter window of the Circle TOP, on the tab Output Page, you can set different composite modes.
Try them out!

• sound of clapping on my the forehead • Thank you and going back to the screen in shame. :wink:

No shame… composite modes were added relatively recently, probably after the tutorial.