我想下载一个可用的视频here。如右上角所示，它可能会托管在Crunchyroll上，因此请检查页面来源。
这是感兴趣的html代码段：
<div id="zype_5387dd4269702d063f000000" style="position: relative; padding-bottom: 56.25%; padding-top: 0; height: 0; overflow: hidden;">
<div style="position: relative; padding-bottom: 56.25%; padding-top: 0; height: 0; overflow: hidden;">
<iframe frameborder="0" width="100%" height="100%" id="_video_5387dd4269702d063f000000" src="https://www.crunchyroll.com/affiliate_iframeplayer?aff=af-88206-hkyj&media_id=663121&video_format=0&video_quality=0&auto_play=0" style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;" nuan_newframe="true"></iframe>
</div>
</div>
检查显示视频嵌入iframe，并且确实托管在Crunchyroll上。同样重要的是要注意src attribute是直接连接到视频播放器页面的链接。
在播放器页面上，HTML如下所示：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"lang="de" xml:lang="de">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
<link rel="icon" href="/favicon.png" />
<title></title>
<script type="text/javascript" src="https://www.crunchyroll.com/common/static/js/swfobject.js"></script>
<link rel="stylesheet" type="text/css" href="https://www.crunchyroll.com/css//20150727144515.1ae5987b9d8aa2552cc16fb8eadc8e78/crcommon/reset.css"/>
<style>
body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
background-color: #000;
color: #FFF;
}
#content {
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
}
</style>
<!--[if IE]>
<style type="text/css">
.clearfix { zoom: 1; /* triggers hasLayout */ display: block; /* resets display for IE/Win */}
.clearfix {display: inline-block;} /* for IE/Mac */
</style>
<![endif]-->
</head>
<body>
<div id="content"><div id="the_embedded_player" style="display:block;" ><div style="color:red; text-align:center; margin:16px 0px;">You either have Javascript turned off or an old version of Flash Player.<br/><br/> <a href="http://www.adobe.com/go/getflashplayer" rel="nofollow">Get the latest Flash Player</a></div></div><script type="text/javascript"><!--
swfobject.embedSWF("https:\/\/www.crunchyroll.com\/flash\/20150615120132.eb0aab8f716ea6981edb6397bd93ffc3\/StandardVideoPlayer.swf",'the_embedded_player','100%', '100%', '9.0.115','https://www.crunchyroll.com/common/static/flash/express_install.swf',{"config_url":"http%3A%2F%2Fwww.crunchyroll.com%2Fxml%2F%3Freq%3DRpcApiVideoPlayer_GetStandardConfig%26media_id%3D663121%26video_format%3D0%26video_quality%3D0%26auto_play%3D0%26aff%3Daf-88206-hkyj%26show_pop_out_controls%3D0%26enable_next%3D0%26lang%3DdeDE"},{"wmode":"transparent","allowFullScreen":"true","allowscriptaccess":"always","allownetworking":"all"},{"id":"the_embedded_player","style":"display:block;"},null);
//--></script></div>
<!-- pylon16 : c64387480c -->
</body>
</html>
很明显，视频必须是swf Flash视频文件。 embedSWF被调用，其定义为here，看起来像这样（after beautifying）：
embedSWF: function(ab, ah, ae, ag, Y, aa, Z, ad, af, ac) {
var X = {
success: false,
id: ah
};
if (M.w3 && !(M.wk && M.wk < 312) && ab && ah && ae && ag && Y) {
w(ah, false);
K(function() {
ae += "";
ag += "";
var aj = {};
if (af && typeof af === r) {
for (var al in af) {
aj[al] = af[al]
}
}
aj.data = ab;
aj.width = ae;
aj.height = ag;
var am = {};
if (ad && typeof ad === r) {
for (var ak in ad) {
am[ak] = ad[ak]
}
}
if (Z && typeof Z === r) {
for (var ai in Z) {
if (typeof am.flashvars != D) {
am.flashvars += "&" + ai + "=" + Z[ai]
} else {
am.flashvars = ai + "=" + Z[ai]
}
}
}
if (F(Y)) {
var an = u(aj, am, ah);
if (aj.id == ah) {
w(ah, true)
}
X.success = true;
X.ref = an
} else {
if (aa && A()) {
aj.data = aa;
P(aj, am, ah, ac);
return
} else {
w(ah, true)
}
}
if (ac) {
ac(X)
}
})
} else {
if (ac) {
ac(X)
}
}
}
这个混淆的代码看起来不会在任何地方领先。
将html中找到的每个链接复制并粘贴到浏览器中似乎不允许下载视频（从here获取的想法）。我如何获得正确的网址？