Thanks for the clarification that the left button is the Video start button. I was misinterpreting it as a left press on the 5-D button! LOL! The real one is much more intuitive.
So "Back button + Video Start button" then for instant screen...
Cool! As an Android device, it might be possible that way, unless DJI has somehow sandboxed control over their app, isolating it from being a triggering event. Lots of others have wanted video recording to be automatic upon arming of the motors...
I didn't know about the "Backspace + Left Button Click," so we both learned something that will make our future screen recordings easier and more likely. :)