How to manually adjust the size of a shape

Question

This may be a bit tricky to explain so I am going to do my best.

I have a video of people watching a movie on a screen. I want to replace that video of myself so it looks like the people in the movie are watching me.

However, that screen in the actual fottage is a little crooked and the edges higher on one side than the other.

I am trying to adjust my green screen to fit it exactly, but the scaling doesnt allow me to adjust the corners to make it perfectly fit. Is there something I am missing? How can I change the left side so its bigger than the right without the whole green screen scaling? I hope this makes sense.

Thanks

Richard van den Boogaard · Answer

This can typically be achieved with a corner pin effect, which allows you to position any of the four corner pins on a desired location.

You can search for it in the Effects panel by typing in Corner Pin, or scrolling to Video Effects > Distort > Corner Pin and then dragging it onto the clip or into the Effect Control panel.

You will need to adjust the position of the corners by changing the values in the Effect. There is no direct-to-canvas changing of the effect in the Program Monitor. Since this a form of Visual FX, it may be better to switch over to After Effects via dynamic linking and apply the Corner Pin there.

Hope this helps.

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