title: Can you call out to FFMPEG in a Firebase Cloud Function
body: <p>Per the Firebase Cloud Functions documentation, you can leverage ImageMagick from within a cloud function:  <a href="https://firebase.google.com/docs/functions/use-cases" rel="noreferrer">https://firebase.google.com/docs/functions/use-cases</a></p>
  
  <p>Is it possible do something similar but call out to FFMPEG instead of ImageMagick?  While thumbnailing images is great, I'd also like the capability to append incoming images to a video file stored out on Firebase Storage.</p>