# m4a numbering format

**URL:** https://community.mp3tag.de/t/m4a-numbering-format/15942
**Category:** Off-Topic
**Created:** [July 24, 2014, 6:34pm UTC](https://community.mp3tag.de/t/m4a-numbering-format/15942 "2014-07-24T18:34:36Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![nutcracker](https://community.mp3tag.de/user_avatar/community.mp3tag.de/nutcracker/32/4900_2.png) [@nutcracker](https://community.mp3tag.de/u/nutcracker)
#### Post date: [July 24, 2014, 6:34pm UTC](https://community.mp3tag.de/t/m4a-numbering-format/15942/1 "2014-07-24T18:34:36Z")

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The leading zeros numbering is not always working in m4a format. Why is that?

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<div class="post-metadata">

### 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: [July 25, 2014, 4:09am UTC](https://community.mp3tag.de/t/m4a-numbering-format/15942/2 "2014-07-25T04:09:04Z")

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AFAIK leading zeros is not supported by m4 tags.