get_video.php

<?php
/** 
 * 
 * 
 */

define("YOUTUBE_URL", 'http://www.youtube.com/');
define("YOUTUBE_USER_UPLOAD_URL", 'http://gdata.youtube.com/feeds/api/users/%s/uploads');

require_once 'initializer.php';
require_once 'HTTP/Request2.php';

$format_map = array(
    5 =>  'FLV Normal',
    6 =>  'FLV HQ',
    13 =>  '3GP Mobile',
    17 =>  '3GP Mobile(MPEG-4)',
    18 =>  'MP4 HQ(H.264)',
    22 =>  'MP4 HD(H.264)',
    34 =>  'FLV Normal(H.264)',
    35 =>  'FLV HQ(H.264)',
);

$target_youtube_ids = array(
    "PerfumeWave",
);
$max_results = 50;
$options = array(
    //'author' => $target_youtube_id,
);

if ($argc == 2) {
    if ($argv[1] == "help") {
        echo <<<EOF
Usage:
    php get_video.php [Optoins]
Optoins:
    help            show this help.
    id[,id,...]     download all videos uploaded by user.

EOF;
        exit;
    }
    $target_youtube_ids = explode(",", $argv[1]);
}

$total = 0;
try
{
    foreach ($target_youtube_ids as $target_youtube_id) {
        $i = 1;
        $movie_exists = true;

        while($movie_exists) {
            $url = sprintf(YOUTUBE_USER_UPLOAD_URL, $target_youtube_id) . "?" . http_build_query(array('start-index' => $i, 'max-results' => $max_results));
            echo "Loading: " . $url . " ... ";
            $entries = load_xpath($url, "//entry");
            echo count($entries) . " entries loaded\n";

            foreach ($entries as $entry) {
                $id = basename($entry->id);
                echo "\tID: " . $id . " ... \n";
                echo "\tTitle: " . $entry->title . " ... \n";

                $b = new HTTP_Request2(YOUTUBE_URL . "get_video_info?" . http_build_query(array('video_id' => $id)));
                $res = $b->send();

                parse_str($res->getBody(), $query);
                $token = $query['token'];

                // 一番質の良いフォーマットを選択
                echo "\tFormat avaliables: " . $query['fmt_map'] . "\n"; // for debug
                $format = 18;
                foreach(explode(",", $query['fmt_map']) as $fmt) {
                    $fmt_tmp = explode("/", $fmt);
                    if ($fmt_tmp[0] == 22) {
                        $format = $fmt_tmp[0];
                        break;
                    } else if ($fmt_tmp[0] == 35) {
                        $format = $fmt_tmp[0];
                    }
                }

                // ビデオにリダイレクトされるURLへGET
                $request_url = YOUTUBE_URL . "get_video?" . http_build_query(array('video_id' => $id, 't' => $token, 'fmt' => $format));
                echo "\t\tTo get video_url: " . $request_url . "\n";
                echo "\t\tQuarity: " . $format_map[$format] . "\n";
                $b->setUrl($request_url);
                $res = $b->send();

                // headerからビデオURLを取得
                $headers = $res->getHeader();
                $video_url = $headers['location'];
                $video_filename = str_replace(array("/", ",", "'", "\"", " ", "!", ".", ), "_", $entry->title);
                echo "\t\tURL fetched: " . $video_url . "\n";

                // header だけげとー
                foreach (get_headers($video_url) as $h) {
                    if (preg_match("@^Content-Disposition@", $h)) {
                        preg_match("@filename=\"[^\.]+?(\.[0-9a-zA-Z]+)\"@", $h, $out);
                        $video_ext = $out[1];
                        break;
                    }
                }
                $video_filename = VIDEO_DATA_DIR . "/" . $video_filename . $video_ext;

                if (!file_exists($video_filename) || filesize($video_filename) == 0) {
                    if (file_put_contents($video_filename, file_get_contents($video_url), FILE_BINARY)) {
                        echo "\tdone.\n";
                    }
                    else {
                        echo "\tFAILED!\n";
                    }
                }
                else {
                    echo "\tfile exists, skipped.\n";
                }
                echo "\n";
            }

            $total += count($entries);
            $i += $max_results;
            if (count($entries) < $max_results) {
                $movie_exists = false;
            }
        }
    }

    echo "\n";
    echo "Total: " . $total . "\n";
}
catch(Exception $e) {
    echo "Exception:\n\t";
    echo $e->getMessage();
    echo "\n";
}

initializer.php

<?php
/** 
 * 
 * 
 */

initializer();

function initializer()
{
    ini_set("memory_limit", "1G");

    define_ifnot_defined("BASE_DIR", dirname(__FILE__));
    define_and_mkdir("HTML_DATA_DIR", BASE_DIR . "/html");
    define_and_mkdir("IMAGE_DATA_DIR", BASE_DIR . "/images");
    define_and_mkdir("VIDEO_DATA_DIR", BASE_DIR . "/videos");

}

function define_ifnot_defined($key, $value)
{
    if (!defined($key)) {
        define($key, $value);
    }
}

function define_and_mkdir($def_name, $dir_name)
{
    if (!defined($def_name)) {
        define($def_name, $dir_name);
    }
    if (!is_dir($dir_name)) {
        if (!mkdir($dir_name)) {
            throw new Exception (sprintf("Error: mkdir failed [%s]", $dir_name));
        }
    }
}

function load_xpath($url, $xpath)
{
    require_once 'HTTP/Request2.php';

    if (!class_exists('HTTP_Request2')) {
        throw new Exception("Error: PEAR::HTTP_Request2 required!");
    }

    $b = new HTTP_Request2($url);
    $res = $b->send();
    if ($res->getStatus() != '200') {
        throw new Exception(sprintf("Error: Youtube.com returned status %s!", $res->getStatus()));
    }
    return simplexml_import_dom(@DOMDocument::loadHTML($res->getBody()))->xpath($xpath);
}