编辑：这样做之后，我注意到您使用的是 YouTube 视频嵌入，而不是实际的视频文件。不过没关系，我就把这个留在这里……
由于您没有在任何地方提到 NodeJS，我猜您希望在浏览器中的 JS 中执行此操作。但是为了在浏览器中发生这种情况，您需要将真实的视频 URL 发送到客户端，并向公众公开您的 URL 签名功能。这违背了签署 URL 的目的。
我尝试使用PHP，它不是很复杂。这是过程：
当用户请求您的页面时，您会为他创建一个临时 URL。此 URL 包含一个签名，其中包含视频的文件路径和到期日期。它通向一个页面，该页面将翻译签名，并在一切正确的情况下提供文件。
我看到您不想使用库，但我使用了“自制”库，这将有助于保持井井有条。这是我使用的文件结构：
/
├── libraries/
│ ├── VideoStream.php
│ └── VideoSignature.php
├── index.php
├── video.mp4
└── getVideo.php
库/VideoSignature.php
请注意，您需要更改顶部的设置以满足您的需要
<?php
/*
* This class allows you to:
* - Encrypt filepaths and expiration dates into signatures
* - Decrypt signatures into filepaths and expiration dates
*
*
* Note: String encryption functions were found here:
* http://stackoverflow.com/a/1289114/1913729
*/
class VideoSignature
{
// Time before a URL expires, in seconds
private $expires = 10;
// Key used to sign your URLs
private $encryption_key = 'soMeStr0ngP455W0rD!!';
// Public URL used to serve the content
private $proxy_url = '/getVideo.php';
// Encrypts a string
private function encryptStr($str){
$iv = mcrypt_create_iv(
mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC),
MCRYPT_DEV_URANDOM
);
$encrypted = base64_encode(
$iv .
mcrypt_encrypt(
MCRYPT_RIJNDAEL_128,
hash('sha256', $this->encryption_key, true),
$str,
MCRYPT_MODE_CBC,
$iv
)
);
return $encrypted;
}
// Decrypts a String
private function decryptStr($str){
$data = base64_decode($str);
$iv = substr($data, 0, mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC));
$decrypted = rtrim(
mcrypt_decrypt(
MCRYPT_RIJNDAEL_128,
hash('sha256', $this->encryption_key, true),
substr($data, mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC)),
MCRYPT_MODE_CBC,
$iv
),
"\0"
);
return $decrypted;
}
// Returns a temporary URL
public function getSignedURL($filepath){
$data = json_encode(
array(
"filepath" => $filepath,
"expires" => time() + $this->expires
)
);
$signature = $this->encryptStr($data);
return $this->proxy_url . "?s=" . urlencode($signature);
}
// Returns a filepath from a signature if it did not expire
public function getFilepath($signature){
$data = json_decode( $this->decryptStr($signature), true);
if($data !== null && $data['expires'] > time() && file_exists($data['filepath'])){
return $data['filepath'];
}
return false;
}
}
库/VideoStream.php
<?php
/*
* This class was found here:
* http://stackoverflow.com/a/39897793/1913729
*
* It allows you to stream video without giving the real file URL
*/
class VideoStream
{
private $path = "";
private $stream = "";
private $buffer = 102400;
private $start = -1;
private $end = -1;
private $size = 0;
function __construct($filePath)
{
$this->path = $filePath;
}
/**
* Open stream
*/
private function open()
{
if (!($this->stream = fopen($this->path, 'rb'))) {
die('Could not open stream for reading');
}
}
/**
* Set proper header to serve the video content
*/
private function setHeader()
{
ob_get_clean();
header("Content-Type: video/mp4");
header("Cache-Control: max-age=2592000, public");
header("Expires: ".gmdate('D, d M Y H:i:s', time()+2592000) . ' GMT');
header("Last-Modified: ".gmdate('D, d M Y H:i:s', @filemtime($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);
}
}
/**
* close curretly opened stream
*/
private function end()
{
fclose($this->stream);
exit;
}
/**
* perform the streaming of calculated range
*/
private function stream()
{
$i = $this->start;
set_time_limit(0);
while(!feof($this->stream) && $i <= $this->end) {
$bytesToRead = $this->buffer;
if(($i+$bytesToRead) > $this->end) {
$bytesToRead = $this->end - $i + 1;
}
$data = fread($this->stream, $bytesToRead);
echo $data;
flush();
$i += $bytesToRead;
}
}
/**
* Start streaming video content
*/
function start()
{
$this->open();
$this->setHeader();
$this->stream();
$this->end();
}
}
索引.php
<?php
// Load the signature helper functions
include "libraries/VideoSignature.php";
$vs = new VideoSignature();
?><!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Check out my video!</title>
</head>
<body>
<!-- /!\ Here, you need to insert a path to your video,
relative to the getVideo.php file, not an actual URL! -->
<video src="<?=$vs->getSignedURL("server/path/to/video.mp4");?>"></video>
</body>
</html>
获取视频.php
<?php
// Load the signature helper functions
include "libraries/VideoSignature.php";
$vs = new VideoSignature();
// Load the video streaming functions
include "libraries/VideoStream.php";
if(isset($_REQUEST['s']) && $filepath = $vs->getFilepath($_REQUEST['s'])){
$stream = new VideoStream($filepath);
$stream->start();
} else {
header("HTTP/1.0 403 Forbidden");
echo "This URL has expired.";
}