Php 在使用HTML5视频播放器播放视频时，如果用户单击其他链接，则需要时间加载新页面

我使用以下HTML5代码来播放视频

<video class="myvideoplr" autobuffer controls autoplay poster="abc.jpg">
  <source src="play_video.php?link=".$link?>" type="video/mp4">
</video>

一切正常。但当用户点击网站上的任何其他链接播放视频时，需要几分钟才能停止视频并加载新页面。问题是什么？如何解决

ob_get_clean();
    header("Content-Type: video/mp4");
    header("Cache-Control: max-age=2592000, public");
    header("Expires: ".gmdate('D, d M Y H:i:s', time()+2592000) . ' GMT');
    header("Last-Modified: ".gmdate('D, d M Y H:i:s', @filemtime($this->path)) . ' GMT' );
    $this->start = 0;
    $this->size  = filesize($this->path);
    $this->end   = $this->size - 1;
    header("Accept-Ranges: 0-".$this->end);

    if (isset($_SERVER['HTTP_RANGE'])) {

        $c_start = $this->start;
        $c_end = $this->end;

        list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2);
        if (strpos($range, ',') !== false) {
            header('HTTP/1.1 416 Requested Range Not Satisfiable');
            header("Content-Range: bytes $this->start-$this->end/$this->size");
            exit;
        }
        if ($range == '-') {
            $c_start = $this->size - substr($range, 1);
        }else{
            $range = explode('-', $range);
            $c_start = $range[0];

            $c_end = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $c_end;
        }
        $c_end = ($c_end > $this->end) ? $this->end : $c_end;
        if ($c_start > $c_end || $c_start > $this->size - 1 || $c_end >= $this->size) {
            header('HTTP/1.1 416 Requested Range Not Satisfiable');
            header("Content-Range: bytes $this->start-$this->end/$this->size");
            exit;
        }
        $this->start = $c_start;
        $this->end = $c_end;
        $length = $this->end - $this->start + 1;
        fseek($this->stream, $this->start);
        header('HTTP/1.1 206 Partial Content');
        header("Content-Length: ".$length);
        header("Content-Range: bytes $this->start-$this->end/".$this->size);
    }
    else
    {
        header("Content-Length: ".$this->size);
    }