public function PHPVideoToolkit::prepareImagesForConversionToVideo in Video 7.2

Same name and namespace in other branches

1. 7 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:

integer $input_frame_rate An integer that will specify the input frame rate for the images.:

Return value

boolean Returns FALSE on encountering an error

File

libraries/phpvideotoolkit/phpvideotoolkit.php5.php, line 1523

Libary to access FFmpeg

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('-r', $input_frame_rate, TRUE);

  // 			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);
}