初始化环境文件
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node_modules/fluent-ffmpeg/doc/inputs.js.html
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node_modules/fluent-ffmpeg/doc/inputs.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/inputs.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/inputs.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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*! Input-related methods
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*/
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module.exports = function(proto) {
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/**
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* Add an input to command
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*
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* Also switches "current input", that is the input that will be affected
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* by subsequent input-related methods.
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*
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* Note: only one stream input is supported for now.
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*
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* @method FfmpegCommand#input
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* @category Input
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* @aliases mergeAdd,addInput
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*
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* @param {String|Readable} source input file path or readable stream
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* @return FfmpegCommand
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*/
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proto.mergeAdd =
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proto.addInput =
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proto.input = function(source) {
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var isFile = false;
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if (typeof source !== 'string') {
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if (!('readable' in source) || !(source.readable)) {
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throw new Error('Invalid input');
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}
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var hasInputStream = this._inputs.some(function(input) {
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return typeof input.source !== 'string';
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});
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if (hasInputStream) {
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throw new Error('Only one input stream is supported');
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}
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source.pause();
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} else {
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var protocol = source.match(/^([a-z]{2,}):/i);
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isFile = !protocol || protocol[0] === 'file';
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}
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this._inputs.push(this._currentInput = {
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source: source,
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isFile: isFile,
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options: utils.args()
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});
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return this;
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};
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/**
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* Specify input format for the last specified input
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*
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* @method FfmpegCommand#inputFormat
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* @category Input
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* @aliases withInputFormat,fromFormat
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*
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* @param {String} format input format
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* @return FfmpegCommand
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*/
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proto.withInputFormat =
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proto.inputFormat =
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proto.fromFormat = function(format) {
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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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this._currentInput.options('-f', format);
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return this;
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};
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/**
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* Specify input FPS for the last specified input
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* (only valid for raw video formats)
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*
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* @method FfmpegCommand#inputFps
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* @category Input
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* @aliases withInputFps,withInputFPS,withFpsInput,withFPSInput,inputFPS,inputFps,fpsInput
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*
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* @param {Number} fps input FPS
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* @return FfmpegCommand
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*/
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proto.withInputFps =
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proto.withInputFPS =
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proto.withFpsInput =
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proto.withFPSInput =
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proto.inputFPS =
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proto.inputFps =
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proto.fpsInput =
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proto.FPSInput = function(fps) {
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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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this._currentInput.options('-r', fps);
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return this;
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};
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/**
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* Use native framerate for the last specified input
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*
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* @method FfmpegCommand#native
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* @category Input
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* @aliases nativeFramerate,withNativeFramerate
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*
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* @return FfmmegCommand
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*/
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proto.nativeFramerate =
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proto.withNativeFramerate =
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proto.native = function() {
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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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this._currentInput.options('-re');
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return this;
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};
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/**
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* Specify input seek time for the last specified input
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*
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* @method FfmpegCommand#seekInput
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* @category Input
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* @aliases setStartTime,seekTo
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*
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* @param {String|Number} seek seek time in seconds or as a '[hh:[mm:]]ss[.xxx]' string
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* @return FfmpegCommand
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*/
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proto.setStartTime =
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proto.seekInput = function(seek) {
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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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this._currentInput.options('-ss', seek);
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return this;
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};
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/**
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* Loop over the last specified input
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*
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* @method FfmpegCommand#loop
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* @category Input
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*
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* @param {String|Number} [duration] loop duration in seconds or as a '[[hh:]mm:]ss[.xxx]' string
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* @return FfmpegCommand
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*/
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proto.loop = function(duration) {
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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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this._currentInput.options('-loop', '1');
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if (typeof duration !== 'undefined') {
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this.duration(duration);
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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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