452 lines
13 KiB
PHP
452 lines
13 KiB
PHP
<?php
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/**
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* VideoDownload class.
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*/
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namespace Alltube;
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use Chain\Chain;
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use Symfony\Component\Process\Process;
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/**
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* Extract info about videos.
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*/
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class VideoDownload
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{
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/**
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* Config instance.
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*
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* @var Config
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*/
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private $config;
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/**
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* VideoDownload constructor.
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*
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* @throws \Exception If youtube-dl is missing
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* @throws \Exception If Python is missing
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*/
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public function __construct(Config $config = null)
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{
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if (isset($config)) {
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$this->config = $config;
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} else {
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$this->config = Config::getInstance();
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}
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if (!is_file($this->config->youtubedl)) {
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throw new \Exception("Can't find youtube-dl at ".$this->config->youtubedl);
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} elseif (!$this->checkCommand([$this->config->python, '--version'])) {
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throw new \Exception("Can't find Python at ".$this->config->python);
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}
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}
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/**
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* Return a youtube-dl process with the specified arguments
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*
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* @param string[] $arguments Arguments
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*
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* @return Process
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*/
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private function getProcess(array $arguments)
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{
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return new Process(
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array_merge(
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[$this->config->python, $this->config->youtubedl],
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$this->config->params,
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$arguments
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)
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);
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}
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/**
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* List all extractors.
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*
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* @return string[] Extractors
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* */
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public function listExtractors()
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{
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return explode("\n", trim($this->getProp(null, null, 'list-extractors')));
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}
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/**
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* Get a property from youtube-dl.
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*
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* @param string $url URL to parse
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* @param string $format Format
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* @param string $prop Property
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* @param string $password Video password
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*
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* @throws PasswordException If the video is protected by a password and no password was specified
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* @throws \Exception If the password is wrong
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* @throws \Exception If youtube-dl returns an error
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*
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* @return string
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*/
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private function getProp($url, $format = null, $prop = 'dump-json', $password = null)
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{
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$arguments = [
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'--'.$prop,
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$url
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];
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if (isset($format)) {
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$arguments[] = '-f '.$format;
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}
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if (isset($password)) {
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$arguments[] = '--video-password';
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$arguments[] = $password;
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}
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$process = $this->getProcess($arguments);
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//This is needed by the openload extractor because it runs PhantomJS
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$process->setEnv(['QT_QPA_PLATFORM'=>'offscreen']);
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$process->run();
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if (!$process->isSuccessful()) {
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$errorOutput = trim($process->getErrorOutput());
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if ($errorOutput == 'ERROR: This video is protected by a password, use the --video-password option') {
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throw new PasswordException($errorOutput);
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} elseif (substr($errorOutput, 0, 21) == 'ERROR: Wrong password') {
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throw new \Exception('Wrong password');
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} else {
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throw new \Exception($errorOutput);
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}
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} else {
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return trim($process->getOutput());
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}
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}
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/**
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* Get all information about a video.
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*
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* @param string $url URL of page
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* @param string $format Format to use for the video
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* @param string $password Video password
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*
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* @return object Decoded JSON
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* */
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public function getJSON($url, $format = null, $password = null)
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{
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return json_decode($this->getProp($url, $format, 'dump-single-json', $password));
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}
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/**
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* Get URL of video from URL of page.
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*
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* It generally returns only one URL.
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* But it can return two URLs when multiple formats are specified
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* (eg. bestvideo+bestaudio).
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*
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* @param string $url URL of page
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* @param string $format Format to use for the video
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* @param string $password Video password
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*
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* @return string[] URLs of video
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* */
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public function getURL($url, $format = null, $password = null)
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{
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return explode("\n", $this->getProp($url, $format, 'get-url', $password));
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}
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/**
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* Get filename of video file from URL of page.
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*
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* @param string $url URL of page
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* @param string $format Format to use for the video
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* @param string $password Video password
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*
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* @return string Filename of extracted video
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* */
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public function getFilename($url, $format = null, $password = null)
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{
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return trim($this->getProp($url, $format, 'get-filename', $password));
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}
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/**
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* Get filename of video with the specified extension.
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*
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* @param string $extension New file extension
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* @param string $url URL of page
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* @param string $format Format to use for the video
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* @param string $password Video password
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*
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* @return string Filename of extracted video with specified extension
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*/
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public function getFileNameWithExtension($extension, $url, $format = null, $password = null)
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{
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return html_entity_decode(
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pathinfo(
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$this->getFilename($url, $format, $password),
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PATHINFO_FILENAME
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).'.'.$extension,
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ENT_COMPAT,
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'ISO-8859-1'
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);
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}
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/**
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* Get filename of audio from URL of page.
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*
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* @param string $url URL of page
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* @param string $format Format to use for the video
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* @param string $password Video password
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*
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* @return string Filename of converted audio file
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* */
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public function getAudioFilename($url, $format = null, $password = null)
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{
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return $this->getFileNameWithExtension('mp3', $url, $format, $password);
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}
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/**
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* Return arguments used to run rtmp for a specific video.
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*
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* @param object $video Video object returned by youtube-dl
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*
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* @return array
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*/
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private function getRtmpProcessArguments(\stdClass $video)
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{
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$arguments = [
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$this->config->rtmpdump,
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'-q',
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];
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foreach ([
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'url' => 'rtmp',
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'webpage_url' => 'pageUrl',
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'player_url' => 'swfVfy',
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'flash_version' => 'flashVer',
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'play_path' => 'playpath',
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'app' => 'app',
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] as $property => $option) {
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if (isset($video->{$property})) {
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$arguments[] = '--'.$option;
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$arguments[] = $video->{$property};
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}
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}
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return $arguments;
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}
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/**
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* Get a process that runs rtmp in order to download a video.
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*
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* @param object $video Video object returned by youtube-dl
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*
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* @throws \Exception If rtmpdump is missing
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*
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* @return \Symfony\Component\Process\Process Process
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*/
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private function getRtmpProcess(\stdClass $video)
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{
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if (!$this->checkCommand([$this->config->rtmpdump, '--help'])) {
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throw(new \Exception('Can\'t find rtmpdump'));
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}
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$arguments = $this->getRtmpProcessArguments($video);
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if (isset($video->rtmp_conn)) {
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foreach ($video->rtmp_conn as $conn) {
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$arguments[] = '--conn';
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$arguments[] = $conn;
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}
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}
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return new Process($arguments);
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}
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/**
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* Check if a command runs successfully.
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*
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* @param array $command Command and arguments
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*
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* @return bool False if the command returns an error, true otherwise
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*/
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private function checkCommand(array $command)
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{
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$process = new Process($command);
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$process->run();
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return $process->isSuccessful();
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}
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/**
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* Get a process that runs avconv in order to convert a video to MP3.
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*
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* @param string $url URL of the video file
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*
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* @throws \Exception If avconv/ffmpeg is missing
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*
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* @return \Symfony\Component\Process\Process Process
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*/
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private function getAvconvMp3Process($url)
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{
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if (!$this->checkCommand([$this->config->avconv, '-version'])) {
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throw(new \Exception('Can\'t find avconv or ffmpeg'));
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}
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$arguments = [
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$this->config->avconv,
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'-v', $this->config->avconvVerbosity,
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'-i', $url,
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'-f', 'mp3',
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'-b:a', $this->config->audioBitrate.'k',
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'-vn',
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'pipe:1',
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];
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if ($url != '-') {
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//Vimeo needs a correct user-agent
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$arguments[] = '-user_agent';
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$arguments[] = $this->getProp(null, null, 'dump-user-agent');
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}
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return new Process($arguments);
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}
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/**
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* Get audio stream of converted video.
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*
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* @param string $url URL of page
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* @param string $format Format to use for the video
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* @param string $password Video password
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*
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* @throws \Exception If your try to convert and M3U8 video
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* @throws \Exception If the popen stream was not created correctly
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*
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* @return resource popen stream
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*/
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public function getAudioStream($url, $format, $password = null)
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{
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$video = $this->getJSON($url, $format, $password);
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if (in_array($video->protocol, ['m3u8', 'm3u8_native'])) {
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throw(new \Exception('Conversion of M3U8 files is not supported.'));
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}
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if (parse_url($video->url, PHP_URL_SCHEME) == 'rtmp') {
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$process = $this->getRtmpProcess($video);
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$chain = new Chain($process);
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$chain->pipe($this->getAvconvMp3Process('-'));
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$stream = popen($chain->getProcess()->getCommandLine(), 'r');
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} else {
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$avconvProc = $this->getAvconvMp3Process($video->url);
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$stream = popen($avconvProc->getCommandLine(), 'r');
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}
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if (!is_resource($stream)) {
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throw new \Exception('Could not open popen stream.');
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}
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return $stream;
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}
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/**
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* Get video stream from an M3U playlist.
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*
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* @param \stdClass $video Video object returned by getJSON
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*
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* @throws \Exception If avconv/ffmpeg is missing
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* @throws \Exception If the popen stream was not created correctly
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*
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* @return resource popen stream
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*/
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public function getM3uStream(\stdClass $video)
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{
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if (!$this->checkCommand([$this->config->avconv, '-version'])) {
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throw(new \Exception('Can\'t find avconv or ffmpeg'));
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}
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$process = new Process(
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[
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$this->config->avconv,
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'-v', 'quiet',
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'-i', $video->url,
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'-f', $video->ext,
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'-c', 'copy',
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'-bsf:a', 'aac_adtstoasc',
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'-movflags', 'frag_keyframe+empty_moov',
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'pipe:1',
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]
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);
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$stream = popen($process->getCommandLine(), 'r');
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if (!is_resource($stream)) {
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throw new \Exception('Could not open popen stream.');
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}
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return $stream;
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}
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/**
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* Get an avconv stream to remux audio and video.
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*
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* @param array $urls URLs of the video ($urls[0]) and audio ($urls[1]) files
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*
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* @throws \Exception If the popen stream was not created correctly
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*
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* @return resource popen stream
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*/
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public function getRemuxStream(array $urls)
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{
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$process = new Process(
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[
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$this->config->avconv,
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'-v', 'quiet',
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'-i', $urls[0],
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'-i', $urls[1],
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'-c', 'copy',
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'-map', '0:v:0 ',
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'-map', '1:a:0',
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'-f', 'matroska',
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'pipe:1',
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]
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);
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$stream = popen($process->getCommandLine(), 'r');
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if (!is_resource($stream)) {
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throw new \Exception('Could not open popen stream.');
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}
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return $stream;
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}
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/**
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* Get video stream from an RTMP video.
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*
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* @param \stdClass $video Video object returned by getJSON
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*
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* @throws \Exception If the popen stream was not created correctly
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*
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* @return resource popen stream
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*/
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public function getRtmpStream(\stdClass $video)
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{
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$stream = popen($this->getRtmpProcess($video)->getCommandLine(), 'r');
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if (!is_resource($stream)) {
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throw new \Exception('Could not open popen stream.');
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}
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return $stream;
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}
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/**
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* Get a Tar stream containing every video in the playlist piped through the server.
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*
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* @param object $video Video object returned by youtube-dl
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* @param string $format Requested format
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*
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* @throws \Exception If the popen stream was not created correctly
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*
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* @return resource
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*/
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public function getPlaylistArchiveStream(\stdClass $video, $format)
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{
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$playlistItems = [];
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foreach ($video->entries as $entry) {
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$playlistItems[] = urlencode($entry->url);
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}
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$stream = fopen('playlist://'.implode(';', $playlistItems).'/'.$format, 'r');
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if (!is_resource($stream)) {
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throw new \Exception('Could not fopen popen stream.');
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}
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return $stream;
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}
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}
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