FileNotFoundError...System cannot find the path specified

[snippsat]

already put full script here some one please edit it correctl and give me please

We can of course not run this,because of missing files needed eg wvDecrypter.exe, challenge.bin, licence.bin
The structure is as i told you.

foo\
  |-- sunnxt.py
  |-- encryptedvideo.mp4  
  binaries\
    |-- mp4dump.exe
    |-- wvDecrypter.exe
    |-- challenge.bin
    |-- licence.bin

So i have mp4dump.exe now i don't get error at line 35.
So it work til line 54.

E:\div_code\foo
λ python sunnxt.py
unable to extract PSSSH

I don't have a encrypted mp4 video to test with,so it make sense that it don't find PSSSH.
Do you have a source for this script like eg GitHub with all files needed?