Question

我正在使用JWPlayer来提供带有闪回后备功能的html5视频。

如果既没有html5也没有flash支持，我也希望有一个图像后备，但我看不到怎么做。

我的代码如下：

modes:  [
   { type: "html5", },
   { type: "flash", src="http://www.mysite.com/jwplayer/player.swf"}
],

levels: [
   { file: "myvideo.mp4" }, // H.264 version
   { file: "myvideo.webm" }, // WebM version
   { file: "myvideo.ogg" } // Ogg Theroa version
],

有什么想法吗？感谢

Answer 1

您可以使用两个utils函数来检查HTML5和Flash。您可以在source（复制并粘贴网址：http://developer.longtailvideo.com/trac/browser/trunk/js/src/utils/jwplayer.utils.js?rev=1311）中找到它们：

/**
 * Detects whether the browser can handle HTML5 video. 
 * Using this as a proxy for detecting all HTML5 features needed for the JW HTML5 Player.  Do we need more granularity?
 */
jwplayer.utils.hasHTML5 = function() {
    return !!document.createElement('video').canPlayType;
};

/**
 * Detects whether or not the current player has flash capabilities
 * TODO: Add minimum flash version constraint: 9.0.115
 */
jwplayer.utils.hasFlash = function() {
    return (typeof navigator.plugins != "undefined" && typeof navigator.plugins['Shockwave Flash'] != "undefined") || (typeof window.ActiveXObject != "undefined");
};

JWplayer图像后备，如果没有html5或flash支持？

1 个答案: