code: function runFfprobe(command) {
    const inputProbeIndex = 0;
    if (command._inputs[inputProbeIndex].isStream) {
      // Don't probe input streams as this will consume them
      return;
    }
    command.ffprobe(inputProbeIndex, function(err, data) {
      command._ffprobeData = data;
    });
  }
docs: /*
  ! Processor methods
   
  Run ffprobe asynchronously and store data in command
  
  @param {FfmpegCommand} command
  @private