网站在流媒体mp4时没有响应

我正在使用此处的函数流式传输大型（500mb+）mp4文件。这个想法是隐藏视频源，到目前为止它是有效的。

唯一的问题是，在视频完成之前，即使你暂停它，也不可能与网站互动（点击链接等）。此外，你几乎必须关闭选项卡和/或浏览器才能让网站做出响应。似乎可以在另一个浏览器上发出请求，所以我知道服务器本身没有被锁定。

功能如下：

$file = "/home/webtest/videos/720p/video.mp4"; // The media file's location     
    $fp = @fopen($file, 'rb');
    $size   = filesize($file); // File size
    $length = $size;           // Content length
    $start  = 0;               // Start byte
    $end    = $size - 1;       // End byte
    $content_type = 'application/octet-stream'; // type
    header('Content-Type: '.$content_type);
    header("Accept-Ranges: 0-$length");
    if (isset($_SERVER['HTTP_RANGE'])){
        $c_start = $start;
        $c_end   = $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 $start-$end/$size");
            exit;
        }
        if ($range == '-'){
            $c_start = $size - substr($range, 1);
        } else {
            $range  = explode('-', $range);
            $c_start = $range[0];
            $c_end   = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $size;
        }
        $c_end = ($c_end > $end) ? $end : $c_end;
        if ($c_start > $c_end || $c_start > $size - 1 || $c_end >= $size){
            header('HTTP/1.1 416 Requested Range Not Satisfiable');
            header("Content-Range: bytes $start-$end/$size");
            exit;
        }
        $start  = $c_start;
        $end    = $c_end;
        $length = $end - $start + 1;
        fseek($fp, $start);
        header('HTTP/1.1 206 Partial Content');
    }
    // Notify the client the byte range we'll be outputting
    header("Content-Range: bytes $start-$end/$size");
    header("Content-Length: $length");
    // Start buffered download
    $buffer = 1024 * 8;
    while(!feof($fp) && ($p = ftell($fp)) <= $end){
        if ($p + $buffer > $end){
            $buffer = $end - $p + 1;
        }
        set_time_limit(0);
        echo fread($fp, $buffer);
        flush();
    }
    fclose($fp);

这是标题：

HTTP/1.1 206 Partial Content
Date: Mon, 18 Apr 2016 23:36:59 GMT
Server: Apache
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Accept-Ranges: 0-203395220
Content-Range: bytes 0-203395219/203395220
Content-Length: 203395220
Connection: close
Content-Type: video/mp4

请求标头

Accept:*/*
Accept-Encoding:identity;q=1, *;q=0
Accept-Language:en-US,en;q=0.8
Cache-Control:max-age=0
Connection:keep-alive
Cookie:PHPSESSID=24mf06f150895og6s59b9nfte5
DNT:1
Host:
Range:bytes=0-
Referer:
User-Agent:Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.75 Safari/537.36

如果你认为这种方法是不正确或有缺陷的，我绝对愿意接受其他流媒体方法。谢谢