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<?php |
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/** |
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* This file is part of the Divergence package. |
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* |
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* (c) Henry Paradiz <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Divergence\Models\Media; |
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use Exception; |
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/** |
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* Video Media Model |
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* |
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* @author Henry Paradiz <[email protected]> |
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* @author Chris Alfano <[email protected]> |
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* |
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* {@inheritDoc} |
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*/ |
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class Video extends Media |
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{ |
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// configurables |
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public static $ExtractFrameCommand = 'avconv -ss %2$u -i %1$s -an -vframes 1 -f mjpeg -'; // 1=video path, 2=position |
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public static $ExtractFramePosition = 3; |
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public static $encodingProfiles = [ |
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// from https://www.virag.si/2012/01/web-video-encoding-tutorial-with-ffmpeg-0-9/ |
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'h264-high-480p' => [ |
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'enabled' => true, |
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'extension' => 'mp4', |
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'mimeType' => 'video/mp4', |
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'inputOptions' => [], |
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'videoCodec' => 'h264', |
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'videoOptions' => [ |
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'profile:v' => 'high', |
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'preset' => 'slow', |
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'b:v' => '500k', |
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'maxrate' => '500k', |
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'bufsize' => '1000k', |
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'vf' => 'scale="trunc(oh*a/2)*2:480"', // http://superuser.com/questions/571141/ffmpeg-avconv-force-scaled-output-to-be-divisible-by-2 |
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], |
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'audioCodec' => 'aac', |
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'audioOptions' => [ |
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'strict' => 'experimental', |
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], |
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], |
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// from http://superuser.com/questions/556463/converting-video-to-webm-with-ffmpeg-avconv |
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'webm-480p' => [ |
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'enabled' => true, |
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'extension' => 'webm', |
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'mimeType' => 'video/webm', |
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'inputOptions' => [], |
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'videoCodec' => 'libvpx', |
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'videoOptions' => [ |
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'vf' => 'scale=-1:480', |
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], |
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'audioCodec' => 'libvorbis', |
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], |
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]; |
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public function getValue($name) |
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{ |
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switch ($name) { |
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case 'ThumbnailMIMEType': |
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return 'image/jpeg'; |
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case 'Extension': |
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switch ($this->getValue('MIMEType')) { |
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case 'video/x-flv': |
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return 'flv'; |
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case 'video/mp4': |
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return 'mp4'; |
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case 'video/quicktime': |
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return 'mov'; |
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default: |
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throw new Exception('Unable to find video extension for mime-type: '.$this->getValue('MIMEType')); |
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} |
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// no break |
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default: |
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return parent::getValue($name); |
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} |
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} |
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// public methods |
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public function getImage($sourceFile = null): false|\GdImage |
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{ |
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if (!isset($sourceFile)) { |
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$sourceFile = $this->getValue('FilesystemPath') ? $this->getValue('FilesystemPath') : $this->getValue('BlankPath'); |
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} |
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$cmd = sprintf(self::$ExtractFrameCommand, $sourceFile, min(self::$ExtractFramePosition, floor($this->getValue('Duration')))); |
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if ($imageData = shell_exec($cmd)) { |
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return imagecreatefromstring($imageData); |
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} elseif ($sourceFile != $this->getValue('BlankPath')) { |
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return static::getImage($this->getValue('BlankPath')); |
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} |
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return null; |
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} |
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/** |
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* Uses ffprobe to analyze the given file and returns meta data from the first video stream found |
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* |
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* @param string $filename |
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* @param array $mediaInfo |
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* @return array |
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*/ |
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public static function analyzeFile($filename, $mediaInfo = []) |
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{ |
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// examine media with ffprobe |
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$output = shell_exec("ffprobe -of json -show_streams -v quiet $filename"); |
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1 |
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if (!$output || !($json = json_decode($output, true)) || empty($json['streams'])) { |
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throw new \Exception('Unable to examine video with ffprobe, ensure ffmpeg with ffprobe is installed'); |
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} |
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// extract video streams |
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$videoStreams = array_filter($json['streams'], function ($streamInfo) { |
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return $streamInfo['codec_type'] == 'video'; |
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}); |
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1 |
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if (!count($videoStreams)) { |
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throw new Exception('avprobe did not detect any video streams'); |
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} |
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// convert and write interesting information to mediaInfo |
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$mediaInfo['streams'] = $json['streams']; |
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$mediaInfo['videoStream'] = array_shift($videoStreams); |
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$mediaInfo['width'] = (int)$mediaInfo['videoStream']['width']; |
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$mediaInfo['height'] = (int)$mediaInfo['videoStream']['height']; |
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$mediaInfo['duration'] = (float)$mediaInfo['videoStream']['duration']; |
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return $mediaInfo; |
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} |
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public function writeFile($sourceFile): bool |
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{ |
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parent::writeFile($sourceFile); |
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// determine rotation metadata with exiftool |
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$exifToolOutput = exec("exiftool -S -Rotation $this->FilesystemPath"); |
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if (!$exifToolOutput || !preg_match('/Rotation\s*:\s*(?<rotation>\d+)/', $exifToolOutput, $matches)) { |
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throw new Exception('Unable to examine video with exiftool, ensure libimage-exiftool-perl is installed on the host system'); |
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} |
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$sourceRotation = intval($matches['rotation']); |
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// fork encoding job with each configured profile |
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foreach (static::$encodingProfiles as $profileName => $profile) { |
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if (empty($profile['enabled'])) { |
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continue; |
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} |
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// build paths and create directories if needed |
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$outputPath = $this->getFilesystemPath($profileName); |
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if (!is_dir($outputDir = dirname($outputPath))) { |
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mkdir($outputDir, static::$newDirectoryPermissions, true); |
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} |
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$tmpOutputPath = $outputDir.'/'.'tmp-'.basename($outputPath); |
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; |
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// build avconv command |
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$cmd = ['avconv', '-loglevel quiet']; |
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// -- input options |
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if (!empty($profile['inputOptions'])) { |
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static::_appendAvconvOptions($cmd, $profile['inputOptions']); |
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} |
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$cmd[] = '-i'; |
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$cmd[] = $this->FilesystemPath; |
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// -- video output options |
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$cmd[] = '-codec:v'; |
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$cmd[] = $profile['videoCodec']; |
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if (!empty($profile['videoOptions'])) { |
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static::_appendAvconvOptions($cmd, $profile['videoOptions']); |
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} |
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// -- audio output options |
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$cmd[] = '-codec:a'; |
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$cmd[] = $profile['audioCodec']; |
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if (!empty($profile['audioOptions'])) { |
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static::_appendAvconvOptions($cmd, $profile['audioOptions']); |
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} |
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// -- normalize smartphone rotation |
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$cmd[] = '-metadata:s:v rotate="0"'; |
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if ($sourceRotation == 90) { |
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$cmd[] = '-vf "transpose=1"'; |
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} elseif ($sourceRotation == 180) { |
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$cmd[] = '-vf "transpose=1,transpose=1"'; |
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} elseif ($sourceRotation == 270) { |
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$cmd[] = '-vf "transpose=1,transpose=1,transpose=1"'; |
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} |
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// -- general output options |
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if (!empty($profile['outputOptions'])) { |
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static::_appendAvconvOptions($cmd, $profile['outputOptions']); |
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} |
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$cmd[] = $tmpOutputPath; |
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// move to final path after it finished |
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$cmd[] = "&& mv $tmpOutputPath $outputPath"; |
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// convert command to string and decorate for process control |
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$cmd = '(nohup '.implode(' ', $cmd).') > /dev/null 2>/dev/null & echo $! &'; |
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// execute command and retrieve the spawned PID |
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$pid = exec($cmd); |
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// TODO: store PID somewhere in APCU cache so we can do something smarter when a video is requested before it's done encoding |
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} |
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return true; |
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} |
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public function getFilesystemPath($variant = 'original', $filename = null): string |
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{ |
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if (!$filename && array_key_exists($variant, static::$encodingProfiles)) { |
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$filename = $this->ID.'.'.static::$encodingProfiles[$variant]['extension']; |
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$variant = 'video-'.$variant; |
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} |
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return parent::getFilesystemPath($variant, $filename); |
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} |
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public function getMIMEType($variant = 'original'): string |
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{ |
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if (array_key_exists($variant, static::$encodingProfiles)) { |
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return static::$encodingProfiles[$variant]['mimeType']; |
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} |
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return parent::getMIMEType($variant); |
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} |
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public function isVariantAvailable($variant) |
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{ |
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if ( |
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array_key_exists($variant, static::$encodingProfiles) && |
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!empty(static::$encodingProfiles[$variant]['enabled']) && |
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is_readable($this->getFilesystemPath($variant)) |
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) { |
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return true; |
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} |
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return parent::isVariantAvailable($variant); |
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} |
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protected static function _appendAvconvOptions(array &$cmd, array $options) |
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{ |
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foreach ($options as $key => $value) { |
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if (!is_int($key)) { |
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$cmd[] = '-'.$key; |
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} |
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if ($value) { |
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$cmd[] = $value; |
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} |
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} |
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} |
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} |
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Divergence /
framework
Loading history...
The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g.
excluded_paths: ["lib/*"], you can move it to the dependency path list as follows:For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths