wp-includes/ID3/getid3.lib.php:1205UTF-16 (BOM) => ISO-8859-1
$stringstringstring public static function iconv_fallback_utf16_iso88591($string) { $bom = substr($string, 0, 2); if ($bom == "\xFE\xFF") { return self::iconv_fallback_utf16be_iso88591(substr($string, 2)); } elseif ($bom == "\xFF\xFE") { return self::iconv_fallback_utf16le_iso88591(substr($string, 2)); } return $string; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ID3/getid3.lib.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.