public function PHPVideoToolkit::prepareImagesForConversionToVideo in Video 7

Same name and namespace in other branches

1. 7.2 libraries/phpvideotoolkit/phpvideotoolkit.php5.php \PHPVideoToolkit::prepareImagesForConversionToVideo()

* Compiles an array of images into a video. This sets the input file (setInputFile) so you do not need to set it. * The images should be a full absolute path to the actual image file. * NOTE 1; This copies and renames all the supplied images into a temporary folder so the images don't have to be specifically named. However, when * creating the ffmpeg instance you will need to set the absolute path to the temporary folder. The default path is '/tmp/'. * NOTE 2; Please make sure all of the images are all of the same type. * * @access public *

Parameters

array $images An array of images that are to be joined and converted into a video: * @param integer $input_frame_rate An integer that will specify the input frame rate for the images. * @return boolean Returns false on encountering an error

File

libraries/phpvideotoolkit/phpvideotoolkit.php5.php, line 1554

Class

PHPVideoToolkit

Code

public function prepareImagesForConversionToVideo($images, $input_frame_rate) {

  //			http://ffmpeg.mplayerhq.hu/faq.html#TOC3
  //			ffmpeg -f image2 -i img%d.jpg /tmp/a.mpg
  if (empty($images)) {
    return $this
      ->_raiseError('prepareImagesForConversionToVideo_one_img');

    //<-			exits
  }

  //			loop through and validate existence first before making a temporary copy
  foreach ($images as $key => $img) {
    if (!is_file($img)) {
      return $this
        ->_raiseError('prepareImagesForConversionToVideo_img_404', array(
        'img' => $img,
      ));

      //<-				exits
    }
  }
  if (!is_dir($this->_tmp_directory)) {
    return $this
      ->_raiseError('generic_temp_404');

    //<-			exits
  }
  if (!is_writable($this->_tmp_directory)) {
    return $this
      ->_raiseError('generic_temp_writable');

    //<-			exits
  }

  //			get the number of preceding places for the files based on how many files there are to copy
  $total = count($images);

  //			create a temp dir in the temp dir
  $uniqid = $this
    ->unique();
  mkdir($this->_tmp_directory . $uniqid, 0777);

  //			loop through, copy and rename specified images to the temp dir
  $ext = false;
  foreach ($images as $key => $img) {
    $file_ext = array_pop(explode('.', $img));
    if ($ext !== false && $ext !== $file_ext) {
      return $this
        ->_raiseError('prepareImagesForConversionToVideo_img_type');

      //<-				exits
    }
    $ext = $file_ext;
    $tmp_file = $this->_tmp_directory . $uniqid . DS . $this->_tmp_file_prefix . $key . '.' . $ext;
    if (!@copy($img, $tmp_file)) {
      return $this
        ->_raiseError('prepareImagesForConversionToVideo_img_copy', array(
        'img' => $img,
        'tmpfile' => $tmp_file,
      ));

      //<-				exits
    }

    //				push the tmp file name into the unlinks so they can be deleted on class destruction
    array_push($this->_unlink_files, $tmp_file);
  }

  // 			the inputr is a hack for -r to come before the input
  $this
    ->addCommand('-inputr', $input_frame_rate);

  // 			exit;
  //			add the directory to the unlinks
  array_push($this->_unlink_dirs, $this->_tmp_directory . $uniqid);

  //			get the input file format
  $file_iteration = $this->_tmp_file_prefix . '%d.' . $ext;

  //			set the input filename
  return $this
    ->setInputFile($this->_tmp_directory . $uniqid . DS . $file_iteration);
}