# 2.83F
**URL:** https://community.mp3tag.de/t/2-83f/19216
**Category:** General Discussion
**Created:** [August 10, 2017, 11:09am UTC](https://community.mp3tag.de/t/2-83f/19216 "2017-08-10T11:09:07Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Smudger](https://community.mp3tag.de/u/Smudger)
#### Post date: [August 10, 2017, 11:09am UTC](https://community.mp3tag.de/t/2-83f/19216/1 "2017-08-10T11:09:07Z")
Afternoon
Using the version 2.83F and tagging .m4a files.
1. It will not renumber files with leading zero's
2. Will not extract artwork
Thanks In Advance
Steve
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### Author:  [@Smudger](https://community.mp3tag.de/u/Smudger)
#### Post date: [August 10, 2017, 11:20am UTC](https://community.mp3tag.de/t/2-83f/19216/2 "2017-08-10T11:20:03Z")
2.83g is extracting the artwork but not renumbering with leading zero's
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [August 10, 2017, 12:15pm UTC](https://community.mp3tag.de/t/2-83f/19216/3 "2017-08-10T12:15:06Z")
Hi Steve,
this is because in MP4 tags the track number is stored as numeric value instead of a string value. Leading zeros are not possible for MP4 files.
Kind regards
– Florian
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### Author:  [@Smudger](https://community.mp3tag.de/u/Smudger)
#### Post date: [August 11, 2017, 5:15am UTC](https://community.mp3tag.de/t/2-83f/19216/4 "2017-08-11T05:15:29Z")
Thank You didn't know that.
Steve
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [April 5, 2022, 8:27pm UTC](https://community.mp3tag.de/t/2-83f/19216/5 "2022-04-05T20:27:31Z")
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