在YouTube上使用get_video下载视频 [英] Using get_video on YouTube to download a video

问题描述

我正在尝试获取任何YouTube视频的视频网址，如下所示：

I am trying to get the video URL of any YouTube video like this:

打开

http://youtube.com/get_video_info?video_id=VIDEOID

然后取 account_playback_token 令牌值，并打开此URL：

then take the account_playback_token token value and open this URL:

http://www.youtube.com/get_video?video_id=VIDEOID&t=TOKEN&fmt=18&asv=2

这应该打开一个页面只是视频或开始下载视频。但没有任何事情发生，Safari的活动窗口会显示未找到，因此网址有问题。我想将它整合到一个iPad应用程序中，并且获取我在iPhone版本的应用程序中使用的视频网址的javascript方法不起作用，所以我需要另一个解决方案。

This should open a page with just the video or start a download of the video. But nothing happens, Safari's activity window says 'Not found', so there is something wrong with the URL. I want to integrate this into a iPad app, and the javascript method to get the video URL I use in the iPhone version of the app isn't working, so I need another solution.

YouTube更改所有时间，我认为网址刚刚过时。请帮助：）

YouTube changes all the time, and I think the URL is just outdated. Please help :)

编辑：似乎get_video方法不再工作了。我真的很感激任何人可以告诉我另一种方式来找到视频网址。

It seems like the get_video method doesn't work anymore. I'd really appreciate if anybody could tell me another way to find the video URL.

谢谢，我真的需要帮助。

Thank you, I really need help.

推荐答案

对不起，这是不可能的。他们将令牌限制在获得它的IP上。

Sorry, that is not possible anymore. They limit the token to the IP that got it.

使用 get_headers（）函数，它为您提供了一个包含视频链接的数组。我不知道任何关于 ios 的信息，所以希望你可以自己重写这个PHP代码。

Here's a workaround by using the get_headers() function, which gives you an array with the link to the video. I don't know anything about ios, so hopefully you can rewrite this PHP code yourself.

<?php
if(empty($_GET['id'])) {
    echo "No id found!";
}

else {

    function url_exists($url) {
        if(file_get_contents($url, FALSE, NULL, 0, 0) === false) return false;
        return true;
    }

    $id = $_GET['id'];

    $page = @file_get_contents('http://www.youtube.com/get_video_info?&video_id='.$id);

    preg_match('/token=(.*?)&thumbnail_url=/', $page, $token);

    $token = urldecode($token[1]);

    $get = $title->video_details;

    $url_array = array ("http://youtube.com/get_video?video_id=".$id."&t=".$token,
    "http://youtube.com/get_video?video_id=".$id."&t=".$token."&fmt=18");

    if(url_exists($url_array[1]) === true) {
        $file = get_headers($url_array[1]);
    }

    elseif(url_exists($url_array[0]) === true) {
        $file = get_headers($url_array[0]);
    }

    $url = trim($file[19],"Location: ");

    echo '<a href="'.$url.'">Download video</a>';
}
?>

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