Sulu\Bundle\MediaBundle\Media\Video\VideoThumbnailServiceInterface::generate PHP Method

    public function generate($file, $time, $destination);

 /**
  * Converts one frame of a video to an image using FFMPEG.
  *
  * @param string $content
  *
  * @return string
  *
  * @throws OriginalFileNotFoundException
  */
 private function convertVideoToImage($content)
 {
     $temporaryFilePath = $this->createTemporaryFile($content);
     $this->videoThumbnail->generate($temporaryFilePath, '00:00:02:01', $temporaryFilePath);
     $extractedImage = file_get_contents($temporaryFilePath);
     unlink($temporaryFilePath);
     return $extractedImage;
 }