# Title renamed to portion of filename
**URL:** https://community.mp3tag.de/t/title-renamed-to-portion-of-filename/5087
**Category:** Support
**Created:** [June 29, 2007, 8:16pm UTC](https://community.mp3tag.de/t/title-renamed-to-portion-of-filename/5087 "2007-06-29T20:16:54Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@ken](https://community.mp3tag.de/u/ken)
#### Post date: [June 29, 2007, 8:16pm UTC](https://community.mp3tag.de/t/title-renamed-to-portion-of-filename/5087/1 "2007-06-29T20:16:54Z")
My mp3 file names follow the convention: yymmdd Author {Series} Description
For example: 070603 John Doe {Sunday Morning Series} This is small description.mp3
I have 3000 files. Is there a way where I can use regular expressions to have the Title be the Description of every file. In the example above, the title would be: _This is small description_
Thanks,
Ken
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### Author:  [@ken](https://community.mp3tag.de/u/ken)
#### Post date: [July 2, 2007, 12:33am UTC](https://community.mp3tag.de/t/title-renamed-to-portion-of-filename/5087/2 "2007-07-02T00:33:10Z")
Anyone have answers?
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### Author:  [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)
#### Post date: [July 2, 2007, 1:19pm UTC](https://community.mp3tag.de/t/title-renamed-to-portion-of-filename/5087/3 "2007-07-02T13:19:15Z")
I don't understand exactly, what you want to do. 😲
Which ID3tag should contain which part of the filename?
If you write "...Title be the Description of every file" - what kind of description? Do you mean the COMMENT-Tag of every file?
Please make an example with the desired tags and content from your filename.
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### Author:  [@ken](https://community.mp3tag.de/u/ken)
#### Post date: [July 10, 2007, 9:10am UTC](https://community.mp3tag.de/t/title-renamed-to-portion-of-filename/5087/4 "2007-07-10T09:10:25Z")
Hi,
The 'Title' tag should contain a portion of the filename.
Another Example: 070203wABC {Name of Series}XYZ.mp3
XYZ is the 'Title'
The 'Title' should be that which is after the curly brackets.
Thanks,
Ken
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### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [July 10, 2007, 9:48am UTC](https://community.mp3tag.de/t/title-renamed-to-portion-of-filename/5087/5 "2007-07-10T09:48:33Z")
1. This should work:
Convert/Filename-Tag
Formatstring: **%DUMMY%} %TITLE%**
2. This should work:
Action #1:
_Action type:_ **Format value**
_Field:_ **TITLE**
_Formatstring:_ **$regexp(%\_filename%,^(._} )(._)$,$2)**
3. This should work:
Action #1:
_Action type:_ **Format value**
_Field:_ **TITLE**
_Formatstring:_ **$regexp($regexp(%\_FILENAME%,.\*} ,),.mp3$,)**
4. This should work:
Action #1:
_Action type:_ **Format value**
_Field:_ **TITLE**
_Formatstring:_ **%\_FILENAME%**
Action #2:
_Action type:_ **Replace with regular expression**
_Field:_ **TITLE**
_Regular expression:_ **^(._} )(._)(.mp3)$**
_Replace matches with:_ **$2**
[] case-sensitive comparison
The contents of %\_FILENAME% seems to be ambigious.
In cases 1, 2 there is no file extension '.mp3' included but in cases 3, 4 there is a file extension.
DD.20070711.2025.MEST
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### Author:  [@ken](https://community.mp3tag.de/u/ken)
#### Post date: [July 31, 2007, 11:30am UTC](https://community.mp3tag.de/t/title-renamed-to-portion-of-filename/5087/6 "2007-07-31T11:30:31Z")
> [@DetlevD](#):
>
> 1. This should work:
> Convert/Filename-Tag
> Formatstring: **%DUMMY%} %TITLE%**
>
> 2. This should work:
> Action #1:
> _Action type:_ **Format value**
> _Field:_ **TITLE**
> _Formatstring:_ **$regexp(%\_filename%,^(._} )(._)$,$2)**
>
> 3. This should work:
> Action #1:
> _Action type:_ **Format value**
> _Field:_ **TITLE**
> _Formatstring:_ **$regexp($regexp(%\_FILENAME%,.\*} ,),.mp3$,)**
>
> 4. This should work:
> Action #1:
> _Action type:_ **Format value**
> _Field:_ **TITLE**
> _Formatstring:_ **%\_FILENAME%**
> Action #2:
> _Action type:_ **Replace with regular expression**
> _Field:_ **TITLE**
> _Regular expression:_ **^(._} )(._)(.mp3)$**
> _Replace matches with:_ **$2**
>
> [] case-sensitive comparison
>
> The contents of %\_FILENAME% seems to be ambigious.
> In cases 1, 2 there is no file extension '.mp3' included but in cases 3, 4 there is a file extension.
>
> DD.20070711.2025.MEST
Thank you for your support. I have studied the regular expressions using the examples shown and have come up with the following that did what I needed:
$regexp(%_filename%,^(.{(.)})(.\*)$,$3_$2)
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:20pm UTC](https://community.mp3tag.de/t/title-renamed-to-portion-of-filename/5087/7 "2026-02-09T12:20:23Z")