meta,
  args = {
       "audiotestsrc num-buffers=10 ! audio/x-raw,format=S16LE,channels=2,layout=non-interleaved ! interaudiosink interaudiosrc num-buffers=10 ! audioconvert ! audio/x-raw,layout=interleaved,format=S16LE,channels=2 ! queue ! fakeaudiosink",
  }