Помогите.
$audio = new ffmpeg_movie($_SERVER['DOCUMENT_ROOT'].'/files/'.$file);
$duration = $audio->getDuration();
$bitrate = $audio->getBitRate();
$audioCodec = $audio->getAudioCodec();
$titleAudio = $audio->getTitle();
$audioChannels = $audio->getAudioChannels();
/*if($extension == 'mp3')
{
$artist = $audio->getArtist();
$genre = $audio->getGenre();
$year = $audio->getYear();
}*/
не извлекает инфу из аудио файла, почему?