wrong with subprocess.check_output

[sumaliqinghua]

I tried the following command, but got the wrong result. Can you tell me what went wrong? Thank you very much.

python split_by_subs.py .\400652224-1-192.avi .\400652224-1-192_hannel_1.srt Traceback (most recent call last): File "split_by_subs.py", line 72, in info = json.loads(subprocess.check_output(['ffprobe','-v','quiet','-print_format','json','-show_format','-show_streams', a File "C:\Python27\lib\subprocess.py", line 212, in check_output process = Popen(stdout=PIPE, *popenargs, **kwargs) File "C:\Python27\lib\subprocess.py", line 390, in init errread, errwrite) File "C:\Python27\lib\subprocess.py", line 640, in _execute_child startupinfo) WindowsError: [Error 2]