title: Broken audio output when writing to pipe source mic using ffmpeg
body: <p>I am trying to read a audio file and write to a pipe source mic created using pulseaudio i am using ffmpeg to do so</p>
  <p>this is the command i am using</p>
  <pre><code>ffmpeg -re -i AudioFilepath -f s16le -ar 44100 -ac 1 - &gt; /tmp/virtmic
  </code></pre>
  <p>What the real problem is that it is creating a broken audio, i do think this is because of a cpu issue as while monitoring i observe that my cpu usage spike to around 70-80% at this point (many more processing running in background)</p>
  <p>Few Question that i had in mind</p>
  <ol>
  <li>can i reduce the cpu usage of this command ( i learnt about a copy command on ffmpeg which skips some decoding and rencoding does that help in this case)</li>
  <li>is there a pulseaudio config i am missing that can cause the audio breaking</li>
  </ol>