Python subprocess arguments
<p>For example I am using ffplay and want to run this command  ‘-bufsize[:stream_specifier] integer (output,audio,video)’</p>

<p>At the moment I have this         </p>

<pre><code> subprocess.call(["ffplay", "-vn", "-nodisp","-bufsize 4096", "%s" % url])
</code></pre>

<p>But this says it is invalid</p>
