调试视频解析错误

@@ -175,6 +175,8 @@ class IndexController extends HomeBaseController
         $video_url = $this->getVideoId($id);
         //页面直接输出视频
         $filePath = 'http://xingqiu.qiniu.brotop.cn/'.$video_url;
+
+        ob_start();
         ini_set('memory_limit', '512M');
         header("Pragma: public");
         header("Expires: 0");
@@ -184,7 +186,7 @@ class IndexController extends HomeBaseController
         //header("Content-Length: 83995");  //文件大小$fsize
         ob_clean();
         flush();
-        ob_end_clean();
+//        ob_end_clean();
         @readfile($filePath);
     }