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YouTubeビデオの直接URLを取得する方法

独自のYouTube動画ダウンローダーの作成に関する現在のチュートリアルはすべて古くなっています。ビデオ情報からのトークン挿入全体が機能せず、JavaScriptメソッドを使用しても機能しません。誰か他の人のプログラムをダウンロードすることなく、現在これを行う方法を誰かが知っていますか?自分でプログラムを作成できるように、方法を知りたいだけです(楽しみのために:D)

前もって感謝します!

15
Feng Huo

今日現在、2012年6月15日は非常に単純です。しかし、将来の変化に注意する必要があります。ここにあります(JavaScript)

try{
    var urls = document.body.innerHTML.match(/"url_encoded_fmt_stream_map": "url=([^"]+)/)[1]
    urls = decodeURIComponent(urls).replace(/\\u0026/g,'&')
    urls = urls.replace(/&quality.+?(?=,url)/g,'');;
    urls = urls.split(',url=')
    // urls is an array of all the possible qualities
    // To download one you could use something like:
    // document.location = urls[0]
    // The first one is usually in the highest quality available
} catch(e){
    console.error("Youtube may have changed its API")
}
18

2018年1月1日の時点で、以下に説明する古い手法は確実に機能するとは思われません。 YouTubeのページはめ込み変数の構造が変更されたようで、更新されたバージョンを理解できませんでした。

これは、任意のブラウザーで利用可能な開発ツールコンソールから直接機能する更新されたバージョン(2017年6月)です。現在のところ、利用可能な場合は最大4kを含む、あらゆるYouTubeメディアタイプで機能するはずです。

https://Gist.github.com/geuis/8b1b2ea57d7f9a9ae22f80d4fbf5b97f

// ES6 version
const videoUrls = ytplayer.config.args.adaptive_fmts
  .split(',')
  .map(item => item
    .split('&')
    .reduce((prev, curr) => (curr = curr.split('='),
      Object.assign(prev, {[curr[0]]: decodeURIComponent(curr[1])})
    ), {})
  )
  .reduce((prev, curr) => Object.assign(prev, {
    [curr.quality_label || curr.type]: curr
  }), {});

console.log(videoUrls);

// ES5 version
var videoUrls = ytplayer.config.args.adaptive_fmts
  .split(',')
  .map(function (item) {
    return item
      .split('&')
      .reduce(function (prev, curr) {
        curr = curr.split('=');
        return Object.assign(prev, {[curr[0]]: decodeURIComponent(curr[1])})
      }, {});
  })
  .reduce(function (prev, curr) {
    return Object.assign(prev, {
      [curr.quality_label || curr.type]: curr
    });
  }, {});

console.log(videoUrls);

https://www.youtube.com/watch?v=9bZkp7q19f のサンプル出力

{
  "1080p": {
    "itag": "248",
    "xtags": "",
    "lmt": "1440215955569849",
    "url": "https://r16---sn-n4v7kn7r.c.youtube.com/videoplayback?itag=248&keepalive=ye…2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csc%2Csource%2Cexpire&mt=1498245944",
    "type": "video/webm;+codecs=\"vp9\"",
    "bitrate": "1733724",
    "index": "243-1977",
    "size": "1920x1080",
    "projection_type": "1",
    "fps": "30",
    "clen": "31192903",
    "init": "0-242",
    "quality_label": "1080p"
  },
  "720p": {
    "itag": "247",
    "xtags": "",
    "lmt": "1440215905109639",
    "url": "https://r16---sn-n4v7kn7r.c.youtube.com/videoplayback?itag=247&keepalive=ye…2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csc%2Csource%2Cexpire&mt=1498245944",
    "type": "video/webm;+codecs=\"vp9\"",
    "bitrate": "726076",
    "index": "243-1933",
    "size": "1280x720",
    "projection_type": "1",
    "fps": "30",
    "clen": "15801933",
    "init": "0-242",
    "quality_label": "720p"
  },
  "480p": {
    "itag": "244",
    "xtags": "",
    "lmt": "1440215890236689",
    "url": "https://r16---sn-n4v7kn7r.c.youtube.com/videoplayback?itag=244&keepalive=ye…2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csc%2Csource%2Cexpire&mt=1498245944",
    "type": "video/webm;+codecs=\"vp9\"",
    "bitrate": "396541",
    "index": "243-1933",
    "size": "854x480",
    "projection_type": "1",
    "fps": "30",
    "clen": "7928237",
    "init": "0-242",
    "quality_label": "480p"
  },
  "360p": {
    "itag": "243",
    "xtags": "",
    "lmt": "1440215888783441",
    "url": "https://r16---sn-n4v7kn7r.c.youtube.com/videoplayback?itag=243&keepalive=ye…2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csc%2Csource%2Cexpire&mt=1498245944",
    "type": "video/webm;+codecs=\"vp9\"",
    "bitrate": "223695",
    "index": "243-1933",
    "size": "640x360",
    "projection_type": "1",
    "fps": "30",
    "clen": "5127362",
    "init": "0-242",
    "quality_label": "360p"
  },
  "240p": {
    "itag": "242",
    "xtags": "",
    "lmt": "1440215900971640",
    "url": "https://r16---sn-n4v7kn7r.c.youtube.com/videoplayback?itag=242&keepalive=ye…2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csc%2Csource%2Cexpire&mt=1498245944",
    "type": "video/webm;+codecs=\"vp9\"",
    "bitrate": "113952",
    "index": "242-1931",
    "size": "426x240",
    "projection_type": "1",
    "fps": "30",
    "clen": "2597162",
    "init": "0-241",
    "quality_label": "240p"
  },
  "144p": {
    "itag": "278",
    "xtags": "",
    "lmt": "1440215900119192",
    "url": "https://r16---sn-n4v7kn7r.c.youtube.com/videoplayback?itag=278&keepalive=ye…2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csc%2Csource%2Cexpire&mt=1498245944",
    "type": "video/webm;+codecs=\"vp9\"",
    "bitrate": "60303",
    "index": "242-1930",
    "size": "256x144",
    "projection_type": "1",
    "fps": "15",
    "clen": "1798744",
    "init": "0-241",
    "quality_label": "144p"
  },
  "audio/mp4;+codecs=\"mp4a.40.2\"": {
    "bitrate": "128266",
    "itag": "140",
    "xtags": "",
    "lmt": "1440578358539132",
    "index": "592-1271",
    "clen": "8482615",
    "projection_type": "1",
    "url": "https://r16---sn-n4v7kn7r.c.youtube.com/videoplayback?itag=140&keepalive=ye…2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csc%2Csource%2Cexpire&mt=1498245944",
    "type": "audio/mp4;+codecs=\"mp4a.40.2\"",
    "init": "0-591"
  },
  "audio/webm;+codecs=\"vorbis\"": {
    "bitrate": "118499",
    "itag": "171",
    "xtags": "",
    "lmt": "1440215938192462",
    "index": "4452-5366",
    "clen": "6383456",
    "projection_type": "1",
    "url": "https://r16---sn-n4v7kn7r.c.youtube.com/videoplayback?itag=171&keepalive=ye…2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csc%2Csource%2Cexpire&mt=1498245944",
    "type": "audio/webm;+codecs=\"vorbis\"",
    "init": "0-4451"
  },
  "audio/webm;+codecs=\"opus\"": {
    "bitrate": "154966",
    "itag": "251",
    "xtags": "",
    "lmt": "1440215889283443",
    "index": "272-1186",
    "clen": "9526605",
    "projection_type": "1",
    "url": "https://r16---sn-n4v7kn7r.c.youtube.com/videoplayback?itag=251&keepalive=ye…2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csc%2Csource%2Cexpire&mt=1498245944",
    "type": "audio/webm;+codecs=\"opus\"",
    "init": "0-271"
  }
}
41
Geuis

なぜ車輪を再発明したいのですか? Rapidleechスクリプトを使用してください!

ところで、ホイールを再発明する必要がある場合は、RapidleechのYoutubeプラグインのソースコードを次に示します(非常に読みやすいです:


class youtube_com extends DownloadClass {

    /*
    Some blah blah about the age verification and erroneous URLs
    $fmt is quality/format number and is an integer
   */
    public function Download($link) {
        $this->fmts = array(38,37,22,45,35,44,34,43,18,5,17);
        $yt_fmt = empty($_REQUEST['yt_fmt']) ? '' : $_REQUEST['yt_fmt'];
        $this->fmturlmaps = $this->GetVideosArr($fmt_url_maps);

        if (empty($yt_fmt) && !isset($_GET["audl"])) return $this->QSelector($link);
        elseif (isset($_REQUEST['ytube_mp4']) && $_REQUEST['ytube_mp4'] == 'on' && !empty($yt_fmt)) {
            //look for and download the highest quality we can find?
            if ($yt_fmt == 'highest') {
                foreach ($this->fmts as $fmt) {
                    if (array_key_exists($fmt, $this->fmturlmaps)) {
                        $furl = $this->fmturlmaps[$fmt];
                        break;
                    }
                }
            } else { //get the format the user specified (making sure it actually exists)
                if (!$furl = $this->fmturlmaps[$yt_fmt]) html_error ('Specified video format not found');
                $fmt = $yt_fmt;
            }
        } else { //just get the one Youtube plays by default (in some cases it could also be the highest quality format)
            $fmt = key($this->fmturlmaps);
            $furl = $this->fmturlmaps[$fmt];
        }

        if (preg_match ('%^5|34|35$%', $fmt)) $ext = '.flv';
        elseif (preg_match ('%^17$%', $fmt)) $ext = '.3gp';
        elseif (preg_match ('%^18|22|37|38$%', $fmt)) $ext = '.mp4';
        elseif (preg_match ('%^43|44|45$%', $fmt)) $ext = '.webm';
        else $ext = '.flv';

        if (!preg_match('#<title>(.*)\s+-\sYouTube[\r|\n|\t|\s]*</title>#Us', $this->page, $title)) html_error('No video title found! Download halted.');
        if (!preg_match ('/video_id=(.+?)(\\\|"|&|(\\\u0026))/', $this->page, $video_id)) html_error('Video id not found.');

        $FileName = str_replace (Array ("\\", "/", ":", "*", "?", "\"", "<", ">", "|"), "_", html_entity_decode(trim($title[1]), ENT_QUOTES)) . "-[{$video_id[1]}][f$fmt]$ext";

        if (stristr($furl, '|')) {
            $u_arr = explode('|', $furl);
            $furl = preg_replace('#://([^/]+)#', "://".$u_arr[2], $u_arr[0]);
        }
        if (isset($_REQUEST['ytdirect']) && $_REQUEST['ytdirect'] == 'on')
        {
            echo "<br /><br /><h4><a style='color:yellow' href='" . urldecode($furl) . "'>Click here or copy the link to your download manager to download</a></h4>";
            echo "<input name='dlurl' style='width: 1000px; border: 1px solid #55AAFF; background-color: #FFFFFF; padding:3px' value='" . urldecode($furl) . "' onclick='javascript:this.select();' readonly></input>";
        }
        else
        {
            $this->RedirectDownload (urldecode($furl), $FileName, $this->cookie, 0, 0, $FileName);
        }
    }
1
Sepehr