使用一个uiwebview加载一个视频网页，然后在回调方法中

- (void)webViewDidFinishLoad:(UIWebView *)webView

{     NSString *lJs = @"document.documentElement.innerHTML"; NSString *lHtml = [webView stringByEvaluatingJavaScriptFromString:lJs]; NSLog(@"html内容:%@",lHtml1); 

   // NSString *lJs2 = @"(document.getElementsByTagName_r(\"video\")[0]).getElementsByTagName_r(\"source\")[0].src";  //qiyi

  NSString *lJs2 = @"(document.getElementsByTagName_r(\"video\")[0]).src";  // youku,tudou,ku6 ,souhu    NSString *lm3u8 = [webView stringByEvaluatingJavaScriptFromString:lJs2];   NSLog(@"video source:%@",lm3u8); }

拿去试试吧，youku、tudou、ku6、qiyi都一个没问题的