# Simple Filename to Tag Problem **URL:** \ **Category:** Support\ **Created:** [July 26, 2011, 4:51pm UTC](https://community.mp3tag.de/t/simple-filename-to-tag-problem/12333 "2011-07-26T16:51:43Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![eraemia](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/e/cdc98d/32.png) [@eraemia](https://community.mp3tag.de/u/eraemia)\ **Post date:** [July 26, 2011, 4:51pm UTC](https://community.mp3tag.de/t/simple-filename-to-tag-problem/12333/1 "2011-07-26T16:51:43Z")
Hello everyone, **Here is my filename:** 101 - Sonata No. 1 in F minor, Op. 6, I. Allegro con fuocoso.mp3 **I'm trying to get the following into the tag:** Disc number: 1 Track: 01 Title: Sonata No. 1 in F minor, Op. 6, I. Allegro con fuocoso **But none of the following format strings work:** %discnumber%$num(%track%,2) - %title% $num(%discnumber%,1)$num(%track%,2) - %title% What am I doing wrong? Please advise. -Nathan ---
**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\ **Post date:** [July 26, 2011, 5:05pm UTC](https://community.mp3tag.de/t/simple-filename-to-tag-problem/12333/2 "2011-07-26T17:05:12Z")
> [@eraemia](#): > > 101 - Sonata No. 1 in F minor, Op. 6, I. Allegro con fuocoso.mp3 > I'm trying to get the following into the tag: > Disc number: 1 > Track: 01 > Title: Sonata No. 1 in F minor, Op. 6, I. Allegro con fuocoso Try to do it in some more steps. First, use the converter filename - tag and put the complete first number into the tag TRACK, so that it contains e.g. 101 The create 2 actions of the type "format tag field", one to format DISCNUMBER with the formatstring: $div(%track%,100) This gives you the result of the division as an integer, in this case "1". Then the same type for TRACK: $mod(%track%,100) This gives you the remainder of the division of 101 by 100. These two actions in one action group work for all joint disc/tracknumbers up to 999, that is 9 discs with 99 tracks each. ---
**Author:** ![eraemia](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/e/cdc98d/32.png) [@eraemia](https://community.mp3tag.de/u/eraemia)\ **Post date:** [July 26, 2011, 5:27pm UTC](https://community.mp3tag.de/t/simple-filename-to-tag-problem/12333/3 "2011-07-26T17:27:33Z")
> [@ohrenkino](#): > > Try to do it in some more steps. > First, use the converter filename - tag and put the complete first number into the tag TRACK, so that it contains e.g. 101 > The create 2 actions of the type "format tag field", one to format DISCNUMBER with the formatstring: > $div(%track%,100) > This gives you the result of the division as an integer, in this case "1". > Then the same type for TRACK: > $mod(%track%,100) > This gives you the remainder of the division of 101 by 100. > These two actions in one action group work for all joint disc/tracknumbers up to 999, that is 9 discs with 99 tracks each. Thanks for your suggestion, ohrenkino. Since it seems like one has to resort to roundabout methods, I ended up using regex to solve the problem: **Parse out disc number with the following \_FILENAME action:** (\d)(\d+) - (.+) --\> $1 - $2 - $3 **Filename to tag:** %discnumber% - %track% - %title% **Revert filename changes with the following action:** (\d) - (\d+) - (.+) --\> $1$2 - $3 ---
**Author:** ![DetlevD](https://community.mp3tag.de/user_avatar/community.mp3tag.de/detlevd/32/123_2.png) [@DetlevD](https://community.mp3tag.de/u/DetlevD)\ **Post date:** [July 27, 2011, 4:34am UTC](https://community.mp3tag.de/t/simple-filename-to-tag-problem/12333/4 "2011-07-27T04:34:41Z")
> [@ohrenkino](#): > > ... $div(%track%,100) ... $mod(%track%,100) ... work for all joint disc/tracknumbers up to 999, that is 9 discs with 99 tracks each. Please check this statement again, it should be possible to address more than 9 discs. DD.20110727.0837.CEST ---
**Author:** ![DetlevD](https://community.mp3tag.de/user_avatar/community.mp3tag.de/detlevd/32/123_2.png) [@DetlevD](https://community.mp3tag.de/u/DetlevD)\ **Post date:** [July 27, 2011, 4:51am UTC](https://community.mp3tag.de/t/simple-filename-to-tag-problem/12333/5 "2011-07-27T04:51:55Z")
> [@eraemia](#): > > ... **Here is my filename:** > 101 - Sonata No. 1 in F minor, Op. 6, I. Allegro con fuocoso.mp3 > **I'm trying to get the following into the tag:** > Disc number: 1 > Track: 01 > Title: Sonata No. 1 in F minor, Op. 6, I. Allegro con fuocoso > ... You can use this .... Begin Action Group **Test\_2011#20110727.TagFieldImport** Action #1 _Actiontype 7:_ **Import tag fields (guess values)** _Source format:_ **$div($num(%\_filename%,1),100)' - '$num($mod($num(%\_filename%,1),100),2)$trimLeft(%\_filename%,'0123456789')** _Guessing pattern:_ **%DISCNUMBER%÷-÷%TRACK%÷-÷%TITLE%** _Note: Replace each special ÷ character with one space character._ End Action Group **Test\_2011#20110727.TagFieldImport** (1 Action) From: \_FILENAME = 101 - Sonata No. 1 in F minor, Op. 6, I. Allegro con fuocoso.mp3 To: DISCNUMBER = 1 TRACK = 01 TITLE = Sonata No. 1 in F minor, Op. 6, I. Allegro con fuocoso DD.20110727.0900.CEST ---
**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\ **Post date:** [February 9, 2026, 12:23pm UTC](https://community.mp3tag.de/t/simple-filename-to-tag-problem/12333/6 "2026-02-09T12:23:14Z")