Filter expressions


This thread collects useful Filter expressions

If you have a useful filter expression, please post it here and give a short description of what it does.

These filter expressions can be used with the Mp3tag filter [F3].

Please look at for the documentation.

-All filter keywords must be uppercase.
-All operations are case insensitive*

Such dateien mit fehlende Tags
Filter - Platzhalter verwenden
Entire List of Filter Keywords
sortierung der listen, per scripte macro function
help with filtering for non standard id3 frames
Can't Execute Basic Filter
mp3tag "frischling" braucht dringend hilfe
Mp3tag Filterausdruck - wie richtig schreiben?
Mp3tag Linksammlung
Convert Filename > Filename (Blank Spaces)
Filter with multiple genres and custom field
Feedback & suggestion

Simple filter

All files without tags:
%_tag% IS ""

Files with flac and ID3v2 tags:
%_tag% HAS "flac id3v2"

Files with mp4 extension
%_extension% IS mp4

All files with a bitrate over 180
%_bitrate% GREATER 180

All files with embedded covers over 20 kbyte
%_cover_size% GREATER 20480


Filter with Scripting

Check if a field is longer than 4 characters:
"$len(%bpm%)" GREATER 4

Files with multipe artist tags:
"$meta_sep(Artist,\\)" HAS \\

Check if two fields have the same value:
"$if($eql(%artist%,%band%),yes,no)" IS yes

Check if the title is part of the filename:
"$ifgreater($strstr(%_filename%,%title%),0,yes,no)" IS yes

Filter Expression Help
comparing id3v1 and id3v2 tags

Filter with Regex (regular expression)

Track numbers that have number/number syntax
track MATCHES \d/\d

Filenames that start with two digits:
%_filename% MATCHES ^\d\d

Filenames that start with two digits not followed by another digit:
%_filename% MATCHES ^\d\d\D

Case sensitive filter:
title MATCHES (?-i)regex

Files with characters that are not in ISO-8859-1 in tag or filename

  • MATCHES [\x{0100}-\x{FFFF}]

Full documentation for regex syntax?
Some Regex Issues

Filenames with 2 hyphens
"$len($regexp(%_filename%,'[^-]',))" IS 2

Filenames with at least 2 hyphens
"$len($regexp(%_filename%,'[^-]',))" GREATER 1

Track number is a single digit
track MATCHES ^\d$

Title tag starts with four capital letters
"$if($eql($regexp(%title%,^\u\u\u\u,),%title%),yes,no)" IS no

Filtering by the no of occurences of a char
Dateien mit bestimmtem Inhalt ausfiltern
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