title: Android video camera with TRRS external microphone recording
body: <p>Most android audio recording apps automatically recognize audio input when external microphone jack that is plugged in is TRRS compatible (usually one of 2 standards: CTIA and OMTP) .  </p>
  
  <p><a href="https://i.stack.imgur.com/yUBQb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yUBQb.png" alt="CTIA vs OMTP"></a></p>
  
  <p>Search as i may, i have not come across a camera app which records video with the external microphone.  Therefore, as a last resource, I am considering eventually developing one.  </p>
  
  <p>Before i embark on a project which just might be a reinvention of the proverbial wheel or worse, a lead balloon:</p>
  
  <p>Is there any impediment for such an app to work?</p>
  
  <p>Corollary: Is there any camera app which recognizes external mic's (automatically or via setup)?  </p>