phpvideotoolkit offset error

Question

This is the error i'm receiving. Notice: Undefined offset: 1 in /Library/WebServer/site/phpvideotoolkit.php5.php on line 813 Notice: Undefined offset: 0 in /Library/WebServer/site/phpvideotoolkit.php5.php on line 814

This is the line code see commented line ERROR HERE $data & $fps_value line

// match the video stream info
    preg_match('/Stream(.*): Video: (.*)/', $buffer, $matches);
    if(count($matches) > 0)
    {
    $data['video'] = array();
// get the dimension parts
// print_r($matches);
    preg_match('/([0-9]{1,5})x([0-9]{1,5})/', $matches[2], $dimensions_matches);
// print_r($dimensions_matches);
    $dimensions_value = $dimensions_matches[0];
    $data['video']['dimensions']    = array(
    'width' => floatval($dimensions_matches[1]),
    'height' => floatval($dimensions_matches[2])
    );
//ERROR HERE $data & $fps_value line... get the framerate
    preg_match('/([0-9\.]+) (fps|tb)\(r\)/', $matches[0], $fps_matches);
    $data['video']['frame_rate']    = floatval($fps_matches[1]);
    $fps_value = $fps_matches[0];
// get the ratios
    preg_match('/\[PAR ([0-9\:\.]+) DAR ([0-9\:\.]+)\]/', $matches[0], $ratio_matches);
    if(count($ratio_matches))
    {
    $data['video']['pixel_aspect_ratio']    = $ratio_matches[1];
    $data['video']['display_aspect_ratio']  = $ratio_matches[2];
    }