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<?php
namespace YouTube;
class Parser
{
public function downloadFormats()
{
$data = file_get_contents("https://raw.githubusercontent.com/ytdl-org/youtube-dl/master/youtube_dl/extractor/youtube.py");
// https://github.com/ytdl-org/youtube-dl/blob/master/youtube_dl/extractor/youtube.py#L429
if (preg_match('/_formats = ({(.*?)})\s*_/s', $data, $matches)) {
$json = $matches[1];
// only "double" quotes are valid in JSON
$json = str_replace("'", "\"", $json);
// remove comments
$json = preg_replace('/\s*#(.*)/', '', $json);
// remove comma from last JSON item
$json = preg_replace('/,\s*}/', '}', $json);
return json_decode($json, true);
}
return array();
}
public function transformFormats($formats)
{
$results = [];
foreach ($formats as $itag => $format) {
$temp = [];
if (!empty($format['ext'])) {
$temp[] = $format['ext'];
}
if (!empty($format['vcodec'])) {
$temp[] = 'video';
}
if (!empty($format['height'])) {
$temp[] = $format['height'] . 'p';
}
if (!empty($format['acodec']) && $format['acodec'] !== 'none') {
$temp[] = 'audio';
}
$results[$itag] = implode(', ', $temp);
}
return $results;
}
public function parseItagInfo($itag)
{
if (isset($this->itag_detailed[$itag])) {
return $this->itag_detailed[$itag];
}
return 'Unknown';
}
// itag info does not change frequently, that is why we cache it here as a plain static array
private $itag_detailed = array(
5 => 'flv, video, 240p, audio',
6 => 'flv, video, 270p, audio',
13 => '3gp, video, audio',
17 => '3gp, video, 144p, audio',
18 => 'mp4, video, 360p, audio',
22 => 'mp4, video, 720p, audio',
34 => 'flv, video, 360p, audio',
35 => 'flv, video, 480p, audio',
36 => '3gp, video, audio',
37 => 'mp4, video, 1080p, audio',
38 => 'mp4, video, 3072p, audio',
43 => 'webm, video, 360p, audio',
44 => 'webm, video, 480p, audio',
45 => 'webm, video, 720p, audio',
46 => 'webm, video, 1080p, audio',
59 => 'mp4, video, 480p, audio',
78 => 'mp4, video, 480p, audio',
82 => 'mp4, video, 360p, audio',
83 => 'mp4, video, 480p, audio',
84 => 'mp4, video, 720p, audio',
85 => 'mp4, video, 1080p, audio',
100 => 'webm, video, 360p, audio',
101 => 'webm, video, 480p, audio',
102 => 'webm, video, 720p, audio',
91 => 'mp4, video, 144p, audio',
92 => 'mp4, video, 240p, audio',
93 => 'mp4, video, 360p, audio',
94 => 'mp4, video, 480p, audio',
95 => 'mp4, video, 720p, audio',
96 => 'mp4, video, 1080p, audio',
132 => 'mp4, video, 240p, audio',
151 => 'mp4, video, 72p, audio',
133 => 'mp4, video, 240p',
134 => 'mp4, video, 360p',
135 => 'mp4, video, 480p',
136 => 'mp4, video, 720p',
137 => 'mp4, video, 1080p',
138 => 'mp4, video',
160 => 'mp4, video, 144p',
212 => 'mp4, video, 480p',
264 => 'mp4, video, 1440p',
298 => 'mp4, video, 720p',
299 => 'mp4, video, 1080p',
266 => 'mp4, video, 2160p',
139 => 'm4a, audio',
140 => 'm4a, audio',
141 => 'm4a, audio',
256 => 'm4a, audio',
258 => 'm4a, audio',
325 => 'm4a, audio',
328 => 'm4a, audio',
167 => 'webm, video, 360p',
168 => 'webm, video, 480p',
169 => 'webm, video, 720p',
170 => 'webm, video, 1080p',
218 => 'webm, video, 480p',
219 => 'webm, video, 480p',
278 => 'webm, video, 144p',
242 => 'webm, video, 240p',
243 => 'webm, video, 360p',
244 => 'webm, video, 480p',
245 => 'webm, video, 480p',
246 => 'webm, video, 480p',
247 => 'webm, video, 720p',
248 => 'webm, video, 1080p',
271 => 'webm, video, 1440p',
272 => 'webm, video, 2160p',
302 => 'webm, video, 720p',
303 => 'webm, video, 1080p',
308 => 'webm, video, 1440p',
313 => 'webm, video, 2160p',
315 => 'webm, video, 2160p',
171 => 'webm, audio',
172 => 'webm, audio',
249 => 'webm, audio',
250 => 'webm, audio',
251 => 'webm, audio',
394 => 'video',
395 => 'video',
396 => 'video',
397 => 'video',
);
}