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<?php
namespace YouTube;
use YouTube\Exception\TooManyRequestsException;
use YouTube\Exception\VideoNotFoundException;
use YouTube\Exception\YouTubeException;
use YouTube\Models\VideoDetails;
use YouTube\Models\YouTubeConfigData;
use YouTube\Responses\GetVideoInfo;
use YouTube\Responses\PlayerApiResponse;
use YouTube\Responses\VideoPlayerJs;
use YouTube\Responses\WatchVideoPage;
use YouTube\Utils\Utils;
class YouTubeDownloader
{
protected $client;
function __construct()
{
$this->client = new Browser();
}
public function getBrowser()
{
return $this->client;
}
/**
* @param $query
* @return array
*/
public function getSearchSuggestions($query)
{
$query = rawurlencode($query);
$response = $this->client->get('http://suggestqueries.google.com/complete/search?client=firefox&ds=yt&q=' . $query);
$json = json_decode($response->body, true);
if (is_array($json) && count($json) >= 2) {
return $json[1];
}
return [];
}
// No longer working...
public function getVideoInfo($video_id)
{
$video_id = Utils::extractVideoId($video_id);
$response = $this->client->get("https://www.youtube.com/get_video_info?" . http_build_query([
'html5' => 1,
'video_id' => $video_id,
'eurl' => 'https://youtube.googleapis.com/v/' . $video_id,
'el' => 'embedded', // or detailpage. default: embedded, will fail if video is not embeddable
'c' => 'TVHTML5',
'cver' => '6.20180913'
]));
return new GetVideoInfo($response);
}
public function getPage($url)
{
$video_id = Utils::extractVideoId($url);
// exact params as used by youtube-dl... must be there for a reason
$response = $this->client->get("https://www.youtube.com/watch?" . http_build_query([
'v' => $video_id,
'gl' => 'US',
'hl' => 'en',
'has_verified' => 1,
'bpctr' => 9999999999
]));
return new WatchVideoPage($response);
}
/**
* To parse the links for the video we need two things:
* contents of `player_response` JSON object that appears on video pages
* contents of player.js script file that's included inside video pages
*
* @param array $player_response
* @param VideoPlayerJs $player
* @return array
*/
public function parseLinksFromPlayerResponse($player_response, VideoPlayerJs $player)
{
return [];
}
protected function getPlayerApiResponse($video_id, YouTubeConfigData $configData)
{
// $api_key = 'AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8';
// exact params matter, because otherwise "slow" download links will be returned
$response = $this->client->post("https://www.youtube.com/youtubei/v1/player?key=" . $configData->getApiKey(), json_encode([
"context" => [
"client" => [
"clientName" => "ANDROID",
"clientVersion" => "16.20",
"hl" => "en"
]
],
"videoId" => $video_id,
"playbackContext" => [
"contentPlaybackContext" => [
"html5Preference" => "HTML5_PREF_WANTS"
]
],
"contentCheckOk" => true,
"racyCheckOk" => true
]), [
'Content-Type' => 'application/json',
'X-Goog-Visitor-Id' => $configData->getGoogleVisitorId(),
'X-Youtube-Client-Name' => $configData->getClientName(),
'X-Youtube-Client-Version' => $configData->getClientVersion()
]);
return new PlayerApiResponse($response);
}
/**
* @param $video_id
* @param array $options
* @return DownloadOptions
* @throws TooManyRequestsException
* @throws YouTubeException
*/
public function getDownloadLinks($video_id, $options = array())
{
$page = $this->getPage($video_id);
$video_id = Utils::extractVideoId($video_id);
if ($page->isTooManyRequests()) {
throw new TooManyRequestsException($page);
} elseif (!$page->isStatusOkay()) {
throw new YouTubeException('Page failed to load. HTTP error: ' . $page->getResponse()->error);
} elseif ($page->isVideoNotFound()) {
throw new VideoNotFoundException();
}
$youtube_config_data = $page->getYouTubeConfigData();
// the most reliable way of fetching all download links no matter what
$player_response = $this->getPlayerApiResponse($video_id, $youtube_config_data);
// get player.js location that holds signature function
$player_url = $page->getPlayerScriptUrl();
$response = $this->getBrowser()->cachedGet($player_url);
$player = new VideoPlayerJs($response);
$parser = PlayerResponseParser::createFrom($player_response);
$parser->setPlayerJsResponse($player);
$links = $parser->parseLinks();
// since we already have that information anyways...
$info = VideoDetails::fromPlayerResponseArray($player_response->getJson());
return new DownloadOptions($links, $info);
}
}