PHP Script: Timeshift in Subtitle Files

Have you ever tried to watch a movie with a .srt file, and the subtitle was more or less out of time? You can use this little PHP script through commandline and fix it by providing an offset.

This obviously is just a quick script, nothing fancy, but i thought I might still share it. Save the file as “subtitle_timeshift.php” and execute it with PHP in the commandline. It will then save your file with the prefix “parse_” so you can check if it works or not.

Enjoy!

<?
if(empty($argv[1]) || empty($argv[2]))
  die('Syntax: php subtitle_timeshift.php filename seconds'. "n");

if(!file_exists($argv[1]))
  die('file not found' . "n");

$fc=file($argv[1]);
$f = fopen('parse_' . $argv[1], 'w+');

foreach($fc as $ln)
{
  if(strpos($ln, ' --> ') !== false)
  {
    $parts = explode(' --> ', $ln);
    $start = substr($parts[0], 0, 8);
    $end = substr($parts[1], 0, 8);

    $start = strtotime("2000-01-01 " . $start) + intval($argv[2]);
    $end = strtotime("2000-01-01 " . $end) + intval($argv[2]);

    $start = date("H:i:s", $start) . substr($parts[0], 8);
    $end = date("H:i:s", $end) . substr($parts[1], 8);

    $ln = $start . ' --> ' . $end;
  }

  fputs($f, $ln);
}

fclose($f);

?>