configurability on posenet frame size or at least make them immutable properties

[wr200m]

Describe the desired feature
Currently I feel the posenet video frame has hardcoded size of 300x250. Can these become properties for the posenet extension? At least expose the height and width on the extension if they are immutable.

https://github.com/mit-cml/appinventor-extensions/blob/extension/posenet/appinventor/components/src/edu/mit/appinventor/ai/posenet/assets/app.js

const videoWidth = 300; const videoHeight = 250;

Give an example of how this feature would be used
This can give flexibility to the sizing of user defined video display/canvas area. Making them at least immutable properties can help user scale the canvas accordingly when these posenet key points X,Y are only relative to the 300x250 orignal video size.

Why doesn't the current App Inventor system address this use case?

Why is this feature beneficial to App Inventor's educational mission?