function str2url($convertStr){
    $search     = array('ç','Ç','ğ','Ğ','ı','İ', 'ö', 'Ö','ş', 'Ş','ü','Ü'); 
    $replace    = array('c','c','g','g','i','i', 'o', 'o','s', 's','u','U');
    $convertStr = str_replace( $search , $replace , $convertStr );
    $convertStr = strtolower( $convertStr );
    $convertStr = preg_replace( '/\s\s+/' , ' ' , $convertStr );
    $convertStr = str_replace(' ' , '-' , $convertStr );
    $convertStr = ereg_replace( '[^a-zA-Z0-9-]' , '' , $convertStr );
    return $convertStr;
}

 /video/$str2url($degisken).html