# MP3Tag not writing linefeed characters for m4a

**URL:** <https://community.mp3tag.de/t/mp3tag-not-writing-linefeed-characters-for-m4a/16648>\
**Category:** Support\
**Created:** [March 1, 2015, 3:42pm UTC](https://community.mp3tag.de/t/mp3tag-not-writing-linefeed-characters-for-m4a/16648 "2015-03-01T15:42:49Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![MP3TagUser123](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/m/71c47a/32.png) [@MP3TagUser123](https://community.mp3tag.de/u/MP3TagUser123)\
**Post date:** [March 1, 2015, 3:42pm UTC](https://community.mp3tag.de/t/mp3tag-not-writing-linefeed-characters-for-m4a/16648/1 "2015-03-01T15:42:49Z")

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I need to append line feed {LF} characters to my carriage returns {CR} in my M4A files so they display properly in my media player (as {CR}{LF}) but MP3Tag seems to scrub them automatically (a test on an MP3 worked fine) Is there a way to disable his behavior?

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**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:** [March 1, 2015, 3:56pm UTC](https://community.mp3tag.de/t/mp3tag-not-writing-linefeed-characters-for-m4a/16648/2 "2015-03-01T15:56:01Z")

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What have you tried in which field?  
Did you have a look at the help on regular expressions?  
([Replace with Regular Expression – Mp3tag Documentation](https://docs.mp3tag.de/actions/replace-regexp))  
especially \n and \r?

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**Author:** ![MP3TagUser123](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/m/71c47a/32.png) [@MP3TagUser123](https://community.mp3tag.de/u/MP3TagUser123)\
**Post date:** [March 1, 2015, 4:19pm UTC](https://community.mp3tag.de/t/mp3tag-not-writing-linefeed-characters-for-m4a/16648/3 "2015-03-01T16:19:22Z")

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> [@ohrenkino](#):
>
> What have you tried in which field?  
> Did you have a look at the help on regular expressions?  
> ([Replace with Regular Expression – Mp3tag Documentation](https://docs.mp3tag.de/actions/replace-regexp))  
> especially \n and \r?

I have made an Action to "Replace with regular expression":

```
Field:
  UNSYNCEDLYRICS

Regular expression:
  [\r]+

Replace matches with:
  \r\n

```

I have also tested it with replacing \r's with 0's (worked OK) and just \n's (removed the \r's and left nothing behind).

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**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, 12:25pm UTC](https://community.mp3tag.de/t/mp3tag-not-writing-linefeed-characters-for-m4a/16648/4 "2026-02-09T12:25:33Z")

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Closed on February 9, 2026, 12:25pm UTC