// 将当前元素的「下一个更大值」存入Map
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The V3 approach obliterates this race condition by hooking addSourceBuffer at the MediaSource.prototype level, I intercept the creation of every SourceBuffer. The moment a buffer is created and returned, I immediately install a hooked appendBuffer directly on that specific instance; before any page code can even see the instance, let alone cache a reference to its methods. The hooked appendBuffer is installed as an own property of the instance, which takes precedence over the prototype chain. There is no window for fermaw to cache the original. The hook is always first.，更多细节参见WPS下载最新地址
Go to worldnews。关于这个话题，safew官方版本下载提供了深入分析
Easy import/export of settings