| /vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Filters/Video/ExtractMultipleFramesFilter.php |
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| @@ -0,0 +1,128 @@ |
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| <?php |
| |
| /* |
| * This file is part of PHP-FFmpeg. |
| * |
| * (c) Strime <romain@strime.io> |
| * |
| * For the full copyright and license information, please view the LICENSE |
| * file that was distributed with this source code. |
| */ |
| |
| namespace FFMpeg\Filters\Video; |
| |
| use FFMpeg\Exception\InvalidArgumentException; |
| use FFMpeg\Exception\RuntimeException; |
| use FFMpeg\Media\Video; |
| use FFMpeg\Format\VideoInterface; |
| |
| class ExtractMultipleFramesFilter implements VideoFilterInterface |
| { |
| /** will extract a frame every second */ |
| const FRAMERATE_EVERY_SEC = '1/1'; |
| /** will extract a frame every 2 seconds */ |
| const FRAMERATE_EVERY_2SEC = '1/2'; |
| /** will extract a frame every 5 seconds */ |
| const FRAMERATE_EVERY_5SEC = '1/5'; |
| /** will extract a frame every 10 seconds */ |
| const FRAMERATE_EVERY_10SEC = '1/10'; |
| /** will extract a frame every 30 seconds */ |
| const FRAMERATE_EVERY_30SEC = '1/30'; |
| /** will extract a frame every minute */ |
| const FRAMERATE_EVERY_60SEC = '1/60'; |
| |
| /** @var integer */ |
| private $priority; |
| private $frameRate; |
| private $destinationFolder; |
| |
| public function __construct($frameRate = self::FRAMERATE_EVERY_SEC, $destinationFolder = __DIR__, $priority = 0) |
| { |
| $this->priority = $priority; |
| $this->frameRate = $frameRate; |
| |
| // Make sure that the destination folder has a trailing slash |
| if(strcmp( substr($destinationFolder, -1), "/") != 0) |
| $destinationFolder .= "/"; |
| |
| // Set the destination folder |
| $this->destinationFolder = $destinationFolder; |
| } |
| |
| /** |
| * {@inheritdoc} |
| */ |
| public function getPriority() |
| { |
| return $this->priority; |
| } |
| |
| /** |
| * {@inheritdoc} |
| */ |
| public function getFrameRate() |
| { |
| return $this->frameRate; |
| } |
| |
| /** |
| * {@inheritdoc} |
| */ |
| public function getDestinationFolder() |
| { |
| return $this->destinationFolder; |
| } |
| |
| /** |
| * {@inheritdoc} |
| */ |
| public function apply(Video $video, VideoInterface $format) |
| { |
| $commands = array(); |
| $duration = 0; |
| |
| try { |
| // Get the duration of the video |
| foreach ($video->getStreams()->videos() as $stream) { |
| if ($stream->has('duration')) { |
| $duration = $stream->get('duration'); |
| } |
| } |
| |
| // Get the number of frames per second we have to extract. |
| if(preg_match('/(\d+)(?:\s*)([\+\-\*\/])(?:\s*)(\d+)/', $this->frameRate, $matches) !== FALSE){ |
| $operator = $matches[2]; |
| |
| switch($operator){ |
| case '/': |
| $nbFramesPerSecond = $matches[1] / $matches[3]; |
| break; |
| |
| default: |
| throw new InvalidArgumentException('The frame rate is not a proper division: ' . $this->frameRate); |
| break; |
| } |
| } |
| |
| // Set the number of digits to use in the exported filenames |
| $nbImages = ceil( $duration * $nbFramesPerSecond ); |
| |
| if($nbImages < 100) |
| $nbDigitsInFileNames = "02"; |
| elseif($nbImages < 1000) |
| $nbDigitsInFileNames = "03"; |
| else |
| $nbDigitsInFileNames = "06"; |
| |
| // Set the parameters |
| $commands[] = '-vf'; |
| $commands[] = 'fps=' . $this->frameRate; |
| $commands[] = $this->destinationFolder . 'frame-%'.$nbDigitsInFileNames.'d.jpg'; |
| } |
| catch (RuntimeException $e) { |
| throw new RuntimeException('An error occured while extracting the frames: ' . $e->getMessage() . '. The code: ' . $e->getCode()); |
| } |
| |
| return $commands; |
| } |
| } |
