# m4a from nero encoder probelm
**URL:** https://community.mp3tag.de/t/m4a-from-nero-encoder-probelm/4966
**Category:** Support
**Created:** [June 3, 2007, 7:00pm UTC](https://community.mp3tag.de/t/m4a-from-nero-encoder-probelm/4966 "2007-06-03T19:00:52Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@dbinder101](https://community.mp3tag.de/u/dbinder101)
#### Post date: [June 3, 2007, 7:00pm UTC](https://community.mp3tag.de/t/m4a-from-nero-encoder-probelm/4966/1 "2007-06-03T19:00:52Z")
I created some m4a (aac) files using the latest version of the nero aac encoder. I'm able to play the files within Winamp. However, when I try tagging the files with mp3tag (latest version) using the convert filename to tag button, I receive the following error message:
"File xxx.m4a cannot be opened for writing"
As a quick test, I created the m4a file using FAAC and it worked fine. Is there a bug with a Nero encoded file?
-David
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [June 9, 2007, 5:56pm UTC](https://community.mp3tag.de/t/m4a-from-nero-encoder-probelm/4966/2 "2007-06-09T17:56:47Z")
Are you playing the file in Winamp while trying to tag it?
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### Author:  [@dbinder101](https://community.mp3tag.de/u/dbinder101)
#### Post date: [July 5, 2007, 8:23pm UTC](https://community.mp3tag.de/t/m4a-from-nero-encoder-probelm/4966/3 "2007-07-05T20:23:38Z")
No, the file is not being used by any application.
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### Author:  [@Sebastian\_Mares](https://community.mp3tag.de/u/Sebastian_Mares)
#### Post date: [July 6, 2007, 1:45pm UTC](https://community.mp3tag.de/t/m4a-from-nero-encoder-probelm/4966/4 "2007-07-06T13:45:13Z")
Are you using the command line Nero encoder or the GUI version that comes with the whole Nero suite?
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### Author:  [@dbinder101](https://community.mp3tag.de/u/dbinder101)
#### Post date: [July 8, 2007, 11:44pm UTC](https://community.mp3tag.de/t/m4a-from-nero-encoder-probelm/4966/5 "2007-07-08T23:44:52Z")
I am using the command line within audiograbber - would that make a difference?
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [July 9, 2007, 6:27pm UTC](https://community.mp3tag.de/t/m4a-from-nero-encoder-probelm/4966/6 "2007-07-09T18:27:03Z")
> [@dbinder101](#):
>
> I am using the command line within audiograbber - would that make a difference?
I don't use AudioGrabber but you can send me one file for analyzing the issue to my [support address](http://mp3tag.de/en/contact.html).
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [July 27, 2007, 5:29am UTC](https://community.mp3tag.de/t/m4a-from-nero-encoder-probelm/4966/7 "2007-07-27T05:29:44Z")
Mp3tag reports a "seek offset out of range" error and foobar2000 reports a "Data truncated" error.
This file seems to be broken.
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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/m4a-from-nero-encoder-probelm/4966/8 "2026-02-09T12:20:20Z")