初始化环境文件
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CN-JS-HuiBai
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node_modules/fluent-ffmpeg/doc/custom.js.html
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node_modules/fluent-ffmpeg/doc/custom.js.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>JSDoc: Source: options/custom.js</title>
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<script src="scripts/prettify/prettify.js"> </script>
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<script src="scripts/prettify/lang-css.js"> </script>
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<!--[if lt IE 9]>
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<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
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<![endif]-->
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<link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
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<link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css">
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</head>
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<body>
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<div id="main">
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<h1 class="page-title">Source: options/custom.js</h1>
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<section>
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<article>
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<pre class="prettyprint source linenums"><code>/*jshint node:true*/
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'use strict';
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var utils = require('../utils');
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/*
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*! Custom options methods
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*/
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module.exports = function(proto) {
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/**
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* Add custom input option(s)
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*
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* When passing a single string or an array, each string containing two
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* words is split (eg. inputOptions('-option value') is supported) for
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* compatibility reasons. This is not the case when passing more than
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* one argument.
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*
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* @example
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* command.inputOptions('option1');
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*
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* @example
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* command.inputOptions('option1', 'option2');
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*
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* @example
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* command.inputOptions(['option1', 'option2']);
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*
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* @method FfmpegCommand#inputOptions
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* @category Custom options
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* @aliases addInputOption,addInputOptions,withInputOption,withInputOptions,inputOption
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*
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* @param {...String} options option string(s) or string array
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* @return FfmpegCommand
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*/
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proto.addInputOption =
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proto.addInputOptions =
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proto.withInputOption =
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proto.withInputOptions =
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proto.inputOption =
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proto.inputOptions = function(options) {
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if (!this._currentInput) {
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throw new Error('No input specified');
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}
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var doSplit = true;
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if (arguments.length > 1) {
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options = [].slice.call(arguments);
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doSplit = false;
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}
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if (!Array.isArray(options)) {
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options = [options];
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}
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this._currentInput.options(options.reduce(function(options, option) {
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var split = option.split(' ');
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if (doSplit && split.length === 2) {
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options.push(split[0], split[1]);
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} else {
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options.push(option);
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}
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return options;
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}, []));
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return this;
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};
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/**
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* Add custom output option(s)
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*
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* @example
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* command.outputOptions('option1');
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*
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* @example
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* command.outputOptions('option1', 'option2');
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*
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* @example
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* command.outputOptions(['option1', 'option2']);
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*
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* @method FfmpegCommand#outputOptions
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* @category Custom options
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* @aliases addOutputOption,addOutputOptions,addOption,addOptions,withOutputOption,withOutputOptions,withOption,withOptions,outputOption
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*
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* @param {...String} options option string(s) or string array
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* @return FfmpegCommand
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*/
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proto.addOutputOption =
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proto.addOutputOptions =
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proto.addOption =
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proto.addOptions =
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proto.withOutputOption =
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proto.withOutputOptions =
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proto.withOption =
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proto.withOptions =
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proto.outputOption =
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proto.outputOptions = function(options) {
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var doSplit = true;
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if (arguments.length > 1) {
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options = [].slice.call(arguments);
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doSplit = false;
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}
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if (!Array.isArray(options)) {
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options = [options];
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}
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this._currentOutput.options(options.reduce(function(options, option) {
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var split = option.split(' ');
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if (doSplit && split.length === 2) {
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options.push(split[0], split[1]);
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} else {
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options.push(option);
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}
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return options;
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}, []));
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return this;
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};
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/**
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* Specify a complex filtergraph
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*
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* Calling this method will override any previously set filtergraph, but you can set
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* as many filters as needed in one call.
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*
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* @example <caption>Overlay an image over a video (using a filtergraph string)</caption>
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* ffmpeg()
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* .input('video.avi')
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* .input('image.png')
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* .complexFilter('[0:v][1:v]overlay[out]', ['out']);
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*
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* @example <caption>Overlay an image over a video (using a filter array)</caption>
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* ffmpeg()
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* .input('video.avi')
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* .input('image.png')
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* .complexFilter([{
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* filter: 'overlay',
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* inputs: ['0:v', '1:v'],
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* outputs: ['out']
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* }], ['out']);
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*
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* @example <caption>Split video into RGB channels and output a 3x1 video with channels side to side</caption>
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* ffmpeg()
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* .input('video.avi')
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* .complexFilter([
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* // Duplicate video stream 3 times into streams a, b, and c
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* { filter: 'split', options: '3', outputs: ['a', 'b', 'c'] },
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*
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* // Create stream 'red' by cancelling green and blue channels from stream 'a'
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* { filter: 'lutrgb', options: { g: 0, b: 0 }, inputs: 'a', outputs: 'red' },
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*
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* // Create stream 'green' by cancelling red and blue channels from stream 'b'
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* { filter: 'lutrgb', options: { r: 0, b: 0 }, inputs: 'b', outputs: 'green' },
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*
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* // Create stream 'blue' by cancelling red and green channels from stream 'c'
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* { filter: 'lutrgb', options: { r: 0, g: 0 }, inputs: 'c', outputs: 'blue' },
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*
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* // Pad stream 'red' to 3x width, keeping the video on the left, and name output 'padded'
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* { filter: 'pad', options: { w: 'iw*3', h: 'ih' }, inputs: 'red', outputs: 'padded' },
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*
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* // Overlay 'green' onto 'padded', moving it to the center, and name output 'redgreen'
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* { filter: 'overlay', options: { x: 'w', y: 0 }, inputs: ['padded', 'green'], outputs: 'redgreen'},
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*
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* // Overlay 'blue' onto 'redgreen', moving it to the right
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* { filter: 'overlay', options: { x: '2*w', y: 0 }, inputs: ['redgreen', 'blue']},
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* ]);
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*
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* @method FfmpegCommand#complexFilter
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* @category Custom options
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* @aliases filterGraph
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*
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* @param {String|Array} spec filtergraph string or array of filter specification
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* objects, each having the following properties:
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* @param {String} spec.filter filter name
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* @param {String|Array} [spec.inputs] (array of) input stream specifier(s) for the filter,
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* defaults to ffmpeg automatically choosing the first unused matching streams
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* @param {String|Array} [spec.outputs] (array of) output stream specifier(s) for the filter,
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* defaults to ffmpeg automatically assigning the output to the output file
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* @param {Object|String|Array} [spec.options] filter options, can be omitted to not set any options
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* @param {Array} [map] (array of) stream specifier(s) from the graph to include in
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* ffmpeg output, defaults to ffmpeg automatically choosing the first matching streams.
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* @return FfmpegCommand
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*/
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proto.filterGraph =
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proto.complexFilter = function(spec, map) {
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this._complexFilters.clear();
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if (!Array.isArray(spec)) {
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spec = [spec];
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}
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this._complexFilters('-filter_complex', utils.makeFilterStrings(spec).join(';'));
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if (Array.isArray(map)) {
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var self = this;
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map.forEach(function(streamSpec) {
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self._complexFilters('-map', streamSpec.replace(utils.streamRegexp, '[$1]'));
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});
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} else if (typeof map === 'string') {
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this._complexFilters('-map', map.replace(utils.streamRegexp, '[$1]'));
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}
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return this;
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};
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};
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</code></pre>
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</article>
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</section>
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</div>
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<nav>
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<h2><a href="index.html">Index</a></h2><ul><li><a href="index.html#installation">Installation</a></li><ul></ul><li><a href="index.html#usage">Usage</a></li><ul><li><a href="index.html#prerequisites">Prerequisites</a></li><li><a href="index.html#creating-an-ffmpeg-command">Creating an FFmpeg command</a></li><li><a href="index.html#specifying-inputs">Specifying inputs</a></li><li><a href="index.html#input-options">Input options</a></li><li><a href="index.html#audio-options">Audio options</a></li><li><a href="index.html#video-options">Video options</a></li><li><a href="index.html#video-frame-size-options">Video frame size options</a></li><li><a href="index.html#specifying-multiple-outputs">Specifying multiple outputs</a></li><li><a href="index.html#output-options">Output options</a></li><li><a href="index.html#miscellaneous-options">Miscellaneous options</a></li><li><a href="index.html#setting-event-handlers">Setting event handlers</a></li><li><a href="index.html#starting-ffmpeg-processing">Starting FFmpeg processing</a></li><li><a href="index.html#controlling-the-ffmpeg-process">Controlling the FFmpeg process</a></li><li><a href="index.html#reading-video-metadata">Reading video metadata</a></li><li><a href="index.html#querying-ffmpeg-capabilities">Querying ffmpeg capabilities</a></li><li><a href="index.html#cloning-an-ffmpegcommand">Cloning an FfmpegCommand</a></li></ul><li><a href="index.html#contributing">Contributing</a></li><ul><li><a href="index.html#code-contributions">Code contributions</a></li><li><a href="index.html#documentation-contributions">Documentation contributions</a></li><li><a href="index.html#updating-the-documentation">Updating the documentation</a></li><li><a href="index.html#running-tests">Running tests</a></li></ul><li><a href="index.html#main-contributors">Main contributors</a></li><ul></ul><li><a href="index.html#license">License</a></li><ul></ul></ul><h3>Classes</h3><ul><li><a href="FfmpegCommand.html">FfmpegCommand</a></li><ul><li> <a href="FfmpegCommand.html#audio-methods">Audio methods</a></li><li> <a href="FfmpegCommand.html#capabilities-methods">Capabilities methods</a></li><li> <a href="FfmpegCommand.html#custom-options-methods">Custom options methods</a></li><li> <a href="FfmpegCommand.html#input-methods">Input methods</a></li><li> <a href="FfmpegCommand.html#metadata-methods">Metadata methods</a></li><li> <a href="FfmpegCommand.html#miscellaneous-methods">Miscellaneous methods</a></li><li> <a href="FfmpegCommand.html#other-methods">Other methods</a></li><li> <a href="FfmpegCommand.html#output-methods">Output methods</a></li><li> <a href="FfmpegCommand.html#processing-methods">Processing methods</a></li><li> <a href="FfmpegCommand.html#video-methods">Video methods</a></li><li> <a href="FfmpegCommand.html#video-size-methods">Video size methods</a></li></ul></ul>
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</nav>
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<br clear="both">
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<footer>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.3.0-alpha5</a> on Tue Jul 08 2014 21:22:19 GMT+0200 (CEST)
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<script> prettyPrint(); </script>
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