Turning Video mid-way in script

[EpheMeroN]

I have a cell phone video of my daughter learning how to ride her bike for the first time. The first 1/3 or so of the video is recorder vertically, and then I turned the phone horizontally for a wider shot and proceeded to record the remainder of the video that way. In my script if I add "TurnLeft()" it corrects the video for that, but how can I keep the beginning video as is and adjust the video mid-way within 1 script?

So far I have this:

LoadPlugin("C:\Program Files\AviSynth\Plugins\ffms2.dll")
Import("C:\Program Files\AviSynth\Plugins\FFMS2.avsi")

FFmpegSource2("C:\Users\User1\Desktop\VIDEO0007.mp4",atrack=-1)

Trim(730,1543)

TurnLeft()