擅长:python、mysql、java
<p>每个参数都应该是列表中单独的元素。<a href="https://docs.python.org/2/library/subprocess.html#subprocess.call" rel="nofollow">doc page</a>有一个如何调用它的示例。你的应该是这样的:</p>
<pre><code>['C:/ffmpeg/bin/ffmpeg.exe','ffmpeg','-i 2.mp4','-vn','-ab','128','outputaudio.mp3']
</code></pre>