# Adding a cover may change the length
**URL:** https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722
**Category:** Support
**Created:** [July 24, 2020, 9:38am UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722 "2020-07-24T09:38:18Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@Dague](https://community.mp3tag.de/u/Dague)
#### Post date: [July 24, 2020, 9:38am UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722/1 "2020-07-24T09:38:18Z")
Once I add a cover into a mp3 file, Mp3tag may extend its length probably, the bigger cover file is, the longer mp3 file I will get.
I'm using Mp3tag v3.02
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [July 24, 2020, 9:45am UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722/2 "2020-07-24T09:45:15Z")
By "length" do you mean "playing time" or "size in bytes"?
If the playing time increases: how do you know? Where do you see that increase?
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### Author:  [@Dague](https://community.mp3tag.de/u/Dague)
#### Post date: [July 24, 2020, 11:35am UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722/3 "2020-07-24T11:35:34Z")
I mean "playing time", I made a copy before adding the cover, so I could compare edited one with the original one, I played them with both Potplayer(Windows) and smartphone(Android), and get the same result.
Such things happened frequently after I updated Mp3tag to v3.02 but never in older version.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [July 24, 2020, 2:44pm UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722/4 "2020-07-24T14:44:40Z")
But the display of the length in MP3tag does not change?
I would test these files with the linked tools:
> [@How to check files for errors?](https://community.mp3tag.de/t/how-to-check-files-for-errors/44633):
>
> It’s required and often helps to reduce support cycles to check files for errors before filing a bug report. Symptoms of erroneous files are often missing or wrong bitrate or length audible blips or skips tags seem to be sticky and cannot be removed There are some really good tools to check the files for errors, namely MP3 Diags — identifies many different issues in MP3 files Website: [http://mp3diags.sourceforge.net](http://mp3diags.sourceforge.net) Download: [MP3 Diags - Getting MP3 Diags](http://mp3diags.sourceforge.net/010_getting_the_program.html#binWindows) If the font size in MP3 Diags is …
and see if there is a cause why the players interpret the covers as music data.
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### Author:  [@Dague](https://community.mp3tag.de/u/Dague)
#### Post date: [July 24, 2020, 10:14pm UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722/5 "2020-07-24T22:14:39Z")
> [@ohrenkino](#):
>
> But the display of the length in MP3tag does not change?
No. Thanks for your work, I'll be waiting for ya.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [July 25, 2020, 6:57am UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722/6 "2020-07-25T06:57:15Z")
> [@Dague](#):
>
> I'll be waiting for ya.
I don't understand. Do you expect me to
> [@ohrenkino](#):
>
> test these files with the linked tools
as I wrote
> [@ohrenkino](#):
>
> I would
?
You have to test them. And try to repair them.
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### Author:  [@Dague](https://community.mp3tag.de/u/Dague)
#### Post date: [July 25, 2020, 10:54am UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722/7 "2020-07-25T10:54:48Z")
Sorry, I misunderstood what you said.
I just tried mp3val, it didn't work at all.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [July 25, 2020, 11:24am UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722/8 "2020-07-25T11:24:11Z")
> [@Dague](#):
>
> I just tried mp3val,
The 3 tools serve different purposes and are good at different disciplines. So you probably would have to try them all.
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### Author:  [@Dague](https://community.mp3tag.de/u/Dague)
#### Post date: [July 25, 2020, 11:45am UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722/9 "2020-07-25T11:45:57Z")
Thank you, I just missed the other two.
Problem solved, MP3 Diags\>Apply a single transformation\>Remove unsupported streams, then I got a mp3 file with cover art and original length.
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [August 24, 2020, 11:46am UTC](https://community.mp3tag.de/t/adding-a-cover-may-change-the-length/49722/10 "2020-08-24T11:46:02Z")
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