Atm I have this as my code, the first line seems to work well but the 2nd gives errrors.

os.chdir('C://Users/Alex/Dropbox/code stuff/test')
subprocess.call('ffmpeg -i test%d0.png output.avi')

Also when I try to run it as this, it gives a 1s cmd flicker and then nothing happens

os.system('ffmpeg -i test%d0.png output.avi')
python cmd
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