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<h2 style="TEXT-ALIGN: left; PADDING-BOTTOM: 0px; LINE-HEIGHT: 25px; BACKGROUND-COLOR: rgb(250,250,250); MARGIN: 5px auto; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial, sans-serif, verdana, helvetica; WHITE-SPACE: normal; COLOR: rgb(64,64,64); FONT-SIZE: 14px; PADDING-TOP: 0px"> <h2 style="TEXT-ALIGN: left; PADDING-BOTTOM: 0px; LINE-HEIGHT: 25px; BACKGROUND-COLOR: rgb(250,250,250); MARGIN: 5px auto; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial, sans-serif, verdana, helvetica; WHITE-SPACE: normal; COLOR: rgb(64,64,64); FONT-SIZE: 14px; PADDING-TOP: 0px">　PHP 操作 MACOS 剪切板。当然这不成能是 B/S 形式那种，操作客户端署理(阅读器地点系统)的剪切板。B/S构造我们只能运用 JAVASCRIPT 或 FLASH去操作，关于PHP来讲只能操作效劳端。

　　这里将讲的是经过挪用系统 MACOS 下的 pbcopy、pbpaste 完成操作剪切板。

<span style="COLOR: rgb(169,169,169)">　　pbcopy takes the standard input and places it in the specified pasteboard. If no pasteboard is specified, the general pasteboard will be used by default. The input is

<span style="COLOR: rgb(169,169,169)">　　placed in the pasteboard as plain text data unless it begins with the Encapsulated PostScript (EPS) file header or the Rich Text Format (RTF) file header, in which case

<span style="COLOR: rgb(169,169,169)">　　it is placed in the pasteboard as one of those data types.

<span style="COLOR: rgb(169,169,169)">　　pbpaste removes the data from the pasteboard and writes it to the standard output. It normally looks first for plain text data in the pasteboard and writes that to the

<span style="COLOR: rgb(169,169,169)">　　standard output; if no plain text data is in the pasteboard it looks for Encapsulated PostScript; if no EPS is present it looks for Rich Text. If none of those types

<span style="COLOR: rgb(169,169,169)">　　is present in the pasteboard, pbpaste produces no output.

　　来看下简略的运用样例，运用 exec 函数是不是很简略?呵呵!

<span style="COLOR: rgb(0,128,0)">　　/**

<span style="COLOR: rgb(0,128,0)">　　* 读取剪切板内容

<span style="COLOR: rgb(0,128,0)">　　*/

<span style="COLOR: rgb(0,128,0)">　　exec('pbpaste', $output, $return);

<span style="COLOR: rgb(0,128,0)">　　var_dump($output, $return);

<span style="COLOR: rgb(0,128,0)">　　/**

<span style="COLOR: rgb(0,128,0)">　　* 写内容(go to clipboard)到剪切板

<span style="COLOR: rgb(0,128,0)">　　*/

<span style="COLOR: rgb(0,128,0)">　　exec('echo go to clipboard | pbcopy', $output, $return);

<span style="COLOR: rgb(0,128,0)">　　var_dump($output, $return);

<table style="TEXT-ALIGN: left; PADDING-BOTTOM: 0px; LINE-HEIGHT: 25px; BACKGROUND-COLOR: rgb(250,250,250); MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial, sans-serif, verdana, helvetica; WHITE-SPACE: normal; COLOR: rgb(64,64,64); FONT-SIZE: 14px; PADDING-TOP: 0px" class="reference" border="1"> <tbody style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <th style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px" width="25%" align="left">办法 <th style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px" width="75%" align="left">描绘 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">addTextTrack() <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">为音视频参加一个新的文本轨迹 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">canPlayType() <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">反省指定的音视频花样能否获得支撑 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">load() <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">从新加载音视频标签 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">play() <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">播放音视频 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">pause() <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">暂停播放当时的音视频 <h2 style="TEXT-ALIGN: left; PADDING-BOTTOM: 0px; LINE-HEIGHT: 25px; BACKGROUND-COLOR: rgb(250,250,250); MARGIN: 5px auto; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial, sans-serif, verdana, helvetica; WHITE-SPACE: normal; COLOR: rgb(64,64,64); FONT-SIZE: 14px; PADDING-TOP: 0px">  <table style="TEXT-ALIGN: left; PADDING-BOTTOM: 0px; LINE-HEIGHT: 25px; BACKGROUND-COLOR: rgb(250,250,250); MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial, sans-serif, verdana, helvetica; WHITE-SPACE: normal; COLOR: rgb(64,64,64); FONT-SIZE: 14px; PADDING-TOP: 0px" border="1"> <tbody style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <th style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px" align="left">属性 <th style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px" width="75%" align="left">描绘 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">audioTracks <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回可用的音轨列表（MultipleTrackList对象） <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">autoplay <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">媒体加载后主动播放 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">buffered <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回缓冲部件的工夫局限(TimeRanges对象) <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">controller <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回当时的媒体节制器（MediaController对象） <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">controls <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">显示播控控件 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">crossOrigin <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">CORS设置 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">currentSrc <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回当时媒体的URL <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">currentTime <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">当时播放的工夫，单元秒 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">defaultMuted <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">缺省能否静音 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">defaultPlaybackRate <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">播控的缺省倍速 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">duration <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回媒体的播放总时长，单元秒 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">ended <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回当时播放能否完毕标记 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">error <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回当时播放的错误形态 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">initialTime <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回初始播放的地位 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">loop <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">能否轮回播放 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">mediaGroup <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">当时音视频所属媒体组 (用来链接多个音视频标签) <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; HEIGHT: 21px; PADDING-TOP: 0px">muted <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; HEIGHT: 21px; PADDING-TOP: 0px">能否静音 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">networkState <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回当时收集形态 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">paused <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">能否暂停 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">playbackRate <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">播放的倍速 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">played <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">当时播放部件曾经播放的工夫局限(TimeRanges对象) <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; HEIGHT: 21px; PADDING-TOP: 0px">preload <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; HEIGHT: 21px; PADDING-TOP: 0px">页面加载时能否还加载音视频 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">readyState <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回当时的预备形态 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">seekable <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回当时可跳转部件的工夫局限(TimeRanges对象) <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">seeking <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回用户能否做了跳转操作 <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; HEIGHT: 21px; PADDING-TOP: 0px">src <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; HEIGHT: 21px; PADDING-TOP: 0px">当时音视频源的URL <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">startOffsetTime <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回当时的工夫偏移(Date对象) <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">textTracks <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回可用的文本轨迹(TextTrackList对象) <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">videoTracks <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">返回可用的视频轨迹(VideoTrackList对象) <tr style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px"> <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 130px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">volume <td style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px">音量值 <h2 style="TEXT-ALIGN: left; PADDING-BOTTOM: 0px; LINE-HEIGHT: 25px; BACKGROUND-COLOR: rgb(250,250,250); MARGIN: 5px auto; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial, sans-serif, verdana, helvetica; WHITE-SPACE: normal; COLOR: rgb(64,64,64); FONT-SIZE: 14px; PADDING-TOP: 0px">