How to zoom into contents of PIP

[pughrc]

Used the ‘Size, Position Rotate’ filter to move a video track to the top left corner of the screen.
I wanted to use ‘key frames’ with the ‘Size, Position Rotate’ filter to slowly zoom into the contents of the PIP.
My result is that the size of the PIP changes
I want to keep the size of the PIP constant, and zoom into the contents of the PIP.
How do I do this?

[SergeC]

Hi @pughrc
Select a 1st Size, Position & Rotate filter
Add a 2nd Size, Position & Rotate filter.
Make sure it is selected and place the video in the chosen position.

Select the 1st SPR. This is the one that will activate the zoom.
Click on keyframes picto and place the keyframes to zoom into the contents.

[pughrc]

Got it !
Thank you for the help.