515 lines
16 KiB
PHP
515 lines
16 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 Exception;
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use stdClass;
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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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* @param Config $config Config instance.
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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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/*
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We don't translate these exceptions because they always occur before Slim can catch them
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so they will always go to the logs.
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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 = null, $format = null, $prop = 'dump-json', $password = null)
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{
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$arguments = ['--'.$prop];
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if (isset($url)) {
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$arguments[] = $url;
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}
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if (isset($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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$process->setEnv(['PATH'=>$this->config->phantomjsDir]);
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$process->inheritEnvironmentVariables();
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$process->run();
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if (!$process->isSuccessful()) {
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$errorOutput = trim($process->getErrorOutput());
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$exitCode = $process->getExitCode();
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if ($errorOutput == 'ERROR: This video is protected by a password, use the --video-password option') {
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throw new PasswordException($errorOutput, $exitCode);
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} elseif (substr($errorOutput, 0, 21) == 'ERROR: Wrong password') {
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throw new Exception(_('Wrong password'), $exitCode);
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} else {
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throw new Exception($errorOutput, $exitCode);
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}
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} else {
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return trim($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 $password Video password
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*
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* @return stdClass Decoded JSON
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* */
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public function getJSON($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, $password = null)
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{
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$urls = explode("\n", $this->getProp($url, $format, 'get-url', $password));
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if (empty($urls[0])) {
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throw new EmptyUrlException(_('youtube-dl returned an empty URL.'));
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}
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return $urls;
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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 stdClass $video Video object returned by youtube-dl
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*
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* @return array Arguments
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*/
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private function getRtmpArguments(stdClass $video)
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{
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$arguments = [];
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if ($video->protocol == 'rtmp') {
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foreach ([
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'url' => '-rtmp_tcurl',
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'webpage_url' => '-rtmp_pageurl',
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'player_url' => '-rtmp_swfverify',
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'flash_version' => '-rtmp_flashver',
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'play_path' => '-rtmp_playpath',
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'app' => '-rtmp_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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if (isset($video->rtmp_conn)) {
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foreach ($video->rtmp_conn as $conn) {
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$arguments[] = '-rtmp_conn';
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$arguments[] = $conn;
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}
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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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* 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.
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*
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* @param stdClass $video Video object returned by youtube-dl
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* @param int $audioBitrate Audio bitrate of the converted file
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* @param string $filetype Filetype of the converted file
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* @param bool $audioOnly True to return an audio-only file
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* @param string $from Start the conversion at this time
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* @param string $to End the conversion at this time
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*
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* @throws Exception If avconv/ffmpeg is missing
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*
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* @return Process Process
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*/
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private function getAvconvProcess(
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stdClass $video,
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$audioBitrate,
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$filetype = 'mp3',
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$audioOnly = true,
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$from = null,
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$to = null
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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 at ').$this->config->avconv.'.');
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}
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$durationRegex = '/(\d+:)?(\d+:)?(\d+)/';
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$afterArguments = [];
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if ($audioOnly) {
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$afterArguments[] = '-vn';
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}
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if (!empty($from)) {
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if (!preg_match($durationRegex, $from)) {
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throw new Exception(_('Invalid start time: ').$from.'.');
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}
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$afterArguments[] = '-ss';
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$afterArguments[] = $from;
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}
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if (!empty($to)) {
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if (!preg_match($durationRegex, $to)) {
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throw new Exception(_('Invalid end time: ').$to.'.');
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}
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$afterArguments[] = '-to';
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$afterArguments[] = $to;
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}
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$arguments = array_merge(
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[
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$this->config->avconv,
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'-v', $this->config->avconvVerbosity,
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],
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$this->getRtmpArguments($video),
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[
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'-i', $video->url,
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'-f', $filetype,
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'-b:a', $audioBitrate.'k',
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],
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$afterArguments,
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[
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'pipe:1',
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]
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);
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if ($video->url != '-') {
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//Vimeo needs a correct user-agent
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$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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* @param string $from Start the conversion at this time
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* @param string $to End the conversion at this time
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*
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* @throws Exception If your try to convert and M3U8 video
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* @throws Exception If the popen stream was not created correctly
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*
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* @return resource popen stream
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*/
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public function getAudioStream($url, $format, $password = null, $from = null, $to = null)
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{
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$video = $this->getJSON($url, $format, $password);
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if (isset($video->_type) && $video->_type == 'playlist') {
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throw new Exception(_('Conversion of playlists is not supported.'));
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}
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if (isset($video->protocol)) {
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if (in_array($video->protocol, ['m3u8', 'm3u8_native'])) {
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throw new Exception(_('Conversion of M3U8 files is not supported.'));
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} elseif ($video->protocol == 'http_dash_segments') {
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throw new Exception(_('Conversion of DASH segments is not supported.'));
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}
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}
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$avconvProc = $this->getAvconvProcess($video, $this->config->audioBitrate, 'mp3', true, $from, $to);
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$stream = popen($avconvProc->getCommandLine(), 'r');
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if (!is_resource($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 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([$this->config->avconv, '-version'])) {
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throw new Exception(_('Can\'t find avconv or ffmpeg at ').$this->config->avconv.'.');
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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', $this->config->avconvVerbosity,
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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', $this->config->avconvVerbosity,
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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 $video)
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{
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$process = new Process(
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array_merge(
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[
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$this->config->avconv,
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'-v', $this->config->avconvVerbosity,
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],
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$this->getRtmpArguments($video),
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[
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'-i', $video->url,
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'-f', $video->ext,
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'pipe:1',
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]
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)
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);
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$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 the stream of a converted video.
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*
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* @param string $url URL of page
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* @param string $format Source format to use for the conversion
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* @param int $audioBitrate Audio bitrate of the converted file
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* @param string $filetype Filetype of the converted file
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* @param string $password Video password
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*
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* @throws Exception If your try to convert and M3U8 video
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* @throws Exception If the popen stream was not created correctly
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*
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* @return resource popen stream
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*/
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public function getConvertedStream($url, $format, $audioBitrate, $filetype, $password = null)
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{
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$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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$avconvProc = $this->getAvconvProcess($video, $audioBitrate, $filetype, false);
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$stream = popen($avconvProc->getCommandLine(), 'r');
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if (!is_resource($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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