# Disc Number action based on album title?
**URL:** https://community.mp3tag.de/t/disc-number-action-based-on-album-title/13392
**Category:** Support
**Created:** [May 4, 2012, 7:47am UTC](https://community.mp3tag.de/t/disc-number-action-based-on-album-title/13392 "2012-05-04T07:47:24Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@sobeitjedi](https://community.mp3tag.de/u/sobeitjedi)
#### Post date: [May 4, 2012, 7:47am UTC](https://community.mp3tag.de/t/disc-number-action-based-on-album-title/13392/1 "2012-05-04T07:47:24Z")
Hi.
Is there a way I can create an action so that when (CD1) or (CD2) or (CD3) etc is detected in the album field (for example)
Greatest Hits (CD2)
the disc number gets auto-filled with this number?
---
### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [May 4, 2012, 8:17am UTC](https://community.mp3tag.de/t/disc-number-action-based-on-album-title/13392/2 "2012-05-04T08:17:41Z")
> [@sobeitjedi](#):
>
> Hi. Is there a way I can create an action so that when (CD1) or (CD2) or (CD3) etc is detected in the album field (for example) Greatest Hits (CD2) the disc number gets auto-filled with this number?
What do you mean with "auto-filled"?
Using a converter?
Using an action?
See there ...
[/t/4117/1](https://community.mp3tag.de/t/4117/1)
... maybe you can adapt something.
DD.20120504.1220.CEST
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### Author:  [@sobeitjedi](https://community.mp3tag.de/u/sobeitjedi)
#### Post date: [May 4, 2012, 8:27am UTC](https://community.mp3tag.de/t/disc-number-action-based-on-album-title/13392/3 "2012-05-04T08:27:06Z")
> [@DetlevD](#):
>
> What do you mean with "auto-filled"?
> Using a converter?
> Using an action?
>
> DD.20120504.1210.CEST
I would like to click an action so the number following CDX gets put in the disc number field.
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### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [May 4, 2012, 8:45am UTC](https://community.mp3tag.de/t/disc-number-action-based-on-album-title/13392/4 "2012-05-04T08:45:43Z")
> [@sobeitjedi](#):
>
> I would like to click an action so the number following CDX gets put in the disc number field.
Action: Format value
Field: DISCNUMBER
Formatstring: **$regexp(%ALBUM%,'^._[\s({[]?CD\s?(\d+)[]})\s]?._$','$1',0)**
DD.20120504.1239.CEST
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### Author:  [@sobeitjedi](https://community.mp3tag.de/u/sobeitjedi)
#### Post date: [May 4, 2012, 8:58am UTC](https://community.mp3tag.de/t/disc-number-action-based-on-album-title/13392/5 "2012-05-04T08:58:27Z")
> [@DetlevD](#):
>
> Action: Format value
> Field: DISCNUMBER
> Formatstring: **$regexp(%ALBUM%,'^._[\s({[]?CD\s?(\d+)[]})\s]?._$','$1',0)**
>
> DD.20120504.1239.CEST
While that does appear to work, it doesn't work on albums where (CDX) isn't in the album title. Only albums with more than one disc get named with CDX. I would like the default to be 1.
Does this make sense?
For example
Be Here Now
Greatest Hits
Best Album (CD1)
Best Album (CD2)
Zooropa
etc
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### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [May 4, 2012, 9:14am UTC](https://community.mp3tag.de/t/disc-number-action-based-on-album-title/13392/6 "2012-05-04T09:14:48Z")
> [@sobeitjedi](#):
>
> While that does appear to work, it doesn't work on albums where (CDX) isn't in the album title. Only albums with more than one disc get named with CDX. I would like the default to be 1. ...
This is a new question.
**Answer 1:**
Activate Filter [F3]
Filterexpression: **%ALBUM% MATCHES "^._[\s({[]?CD\s?(\d+)[]})\s]?._$"**
Action: Format value
Field: DISCNUMBER
Formatstring: **$regexp(%ALBUM%,'^._[\s({[]?CD\s?(\d+)[]})\s]?._$','$1',0)**
Activate Filter [F3]
Filterexpression: **NOT %ALBUM% MATCHES "^._[\s({[]?CD\s?(\d+)[]})\s]?._$"**
Action: Format value
Field: DISCNUMBER
Formatstring: **'1'**
**Answer 2:**
Action: Format value
Field: DISCNUMBER
Formatstring:
**$if($eql(%ALBUM%,$regexp(%ALBUM%,'^.\*[\s({[]?CD\s?(\d+)[]})\s]?.\*$','$1',0)),'1',$regexp(%ALBUM%,'^.\*[\s({[]?CD\s?(\d+)[]})\s]?.\*$','$1',0))**
**Answer 3:**
Action 1: Format value
Field: DISCNUMBER
Formatstring: **$regexp(%ALBUM%,'^._[\s({[]?CD\s?(\d+)[]})\s]?._$','$1',0)**
Action 2: Format value
Field: DISCNUMBER
Formatstring: **[$if($isdigit(%DISCNUMBER%),%DISCNUMBER%,'1')]**
DD.20120504.1342.CEST
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:23pm UTC](https://community.mp3tag.de/t/disc-number-action-based-on-album-title/13392/7 "2026-02-09T12:23:49Z")