When Python calls ffmpeg, 'ffmpeg' is not an internal or external command, nor a runnable program

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solve python call ffmpeg when ‘ffmpeg’ Not an internal or external command , It's not a runnable program

stay windows Under the system , We use windows Next , Use ffmpeg Library call FFmpeg Tools to extract video images / Read video information

import ffmpeg

We may encounter the following problems

'ffmpeg'  Not an internal or external command , It's not a runnable program 

What's the reason for this ？

python Of ffmpeg It's using subprocess.Popen（） Function to call the command line , And then get the returned data . Equivalent to python In your system cmd In the input ffmpeg xxx xxx xxx xxx

Then the system reports you an error ‘ffmpeg’ Not an internal or external command , It's not a runnable program

So there are two reasons ：

• Not installed ffmpeg
  Please refer to install ffmpeg
  
• No environment variables have been added
  Please refer to ：https://blog.csdn.net/tang_chuanlin/article/details/103749351
  

But the quickest way is , When you download well ffmpeg
Then decompress , Write down the bin The path of

E://anaconda//ffmpeg-4.3.1//bin//

And then modify ffmpeg The code of

• 《 Yours python Package path 》/site-packages/ffmpeg/_probe.py
  Add directly ffmpeg The path of
  
  
  
• 《 Yours python Package path 》/site-packages/ffmpeg/_run.py
  Add directly ffmpeg The path of