During our church services I show the lyrics (song texts) in a PIP windows, but the lyrics vary quite a bit in width and height.
So I've created a number of PIP screens that I can choose from depending on the size of the lyrics.
Each PIP screen then has its own crop and zoom settings.
But often new song lyrics deviate just a bit, so that a small piece is not visible.
Does anyone have an idea how I can automatically crop and zoom the lyrics so that they fit in a given PIP screen?
I have to use a PIP windows because Luma key only is not clear enough.

Automatically resizing a PIP window to the dimensions of the text block is also an option if that is easier to achieve.

The lyrics images enter vMix via desktop capture as they are displayed on the projector screen and are all white text with on a black background.