# Source: options/misc.js

    /*jshint node:true*/
    'use strict';

    var path = require('path');

    /*
     *! Miscellaneous methods
     */

    module.exports = function(proto) {
      /**
       * Use preset
       *
       * @method FfmpegCommand#preset
       * @category Miscellaneous
       * @aliases usingPreset
       *
       * @param {String|Function} preset preset name or preset function
       */
      proto.usingPreset =
      proto.preset = function(preset) {
        if (typeof preset === 'function') {
          preset(this);
        } else {
          try {
            var modulePath = path.join(this.options.presets, preset);
            var module = require(modulePath);

            if (typeof module.load === 'function') {
              module.load(this);
            } else {
              throw new Error('preset ' + modulePath + ' has no load() function');
            }
          } catch (err) {
            throw new Error('preset ' + modulePath + ' could not be loaded: ' + err.message);
          }
        }

        return this;
      };
    };