# No leading zeros in MP4 track# field

**URL:** https://community.mp3tag.de/t/no-leading-zeros-in-mp4-track-field/11097
**Category:** Support
**Created:** [November 9, 2010, 12:13pm UTC](https://community.mp3tag.de/t/no-leading-zeros-in-mp4-track-field/11097 "2010-11-09T12:13:43Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Borut](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/b/c77e96/32.png) [@Borut](https://community.mp3tag.de/u/Borut)
#### Post date: [November 9, 2010, 12:13pm UTC](https://community.mp3tag.de/t/no-leading-zeros-in-mp4-track-field/11097/1 "2010-11-09T12:13:43Z")

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Mp3tag does not add zeros in the tag mp4 file. After using the feature to add zeros in the "Wizard automatic numbering" I still remain the number one digital.

My version:  
2.46d

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### Author: ![Florian](https://community.mp3tag.de/user_avatar/community.mp3tag.de/florian/32/5759_2.png) [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [November 9, 2010, 1:02pm UTC](https://community.mp3tag.de/t/no-leading-zeros-in-mp4-track-field/11097/2 "2010-11-09T13:02:02Z")

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Leading zeros are not supported for the track number field in MP4 tags.

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### Author: ![Borut](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/b/c77e96/32.png) [@Borut](https://community.mp3tag.de/u/Borut)
#### Post date: [November 9, 2010, 2:47pm UTC](https://community.mp3tag.de/t/no-leading-zeros-in-mp4-track-field/11097/3 "2010-11-09T14:47:53Z")

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Not good, but thank you for your reply. I miss that, because I need to add one zero (file name), before a single number. Missing feature that has added zero to the number on the title you select song, eg 1-9. Listen to mp3's on home DVD player, which in turn did not see a list of songs, as there is no zero at the numbers 1-9. Regards and thank you for a fantastic program.

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### Author: ![DetlevD](https://community.mp3tag.de/user_avatar/community.mp3tag.de/detlevd/32/123_2.png) [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [November 9, 2010, 4:09pm UTC](https://community.mp3tag.de/t/no-leading-zeros-in-mp4-track-field/11097/4 "2010-11-09T16:09:13Z")

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> [@Borut](#):
>
> ... I miss that, because I need to add one zero (file name), before a single number. ... thank you for a fantastic program.

If a tag-field datatype does not allow a leading zero, then it does not mean that a filename cannot carry a leading zero.  
Use Mp3tag function $num() to format a number as you need it.

DD.20101109.1809.CET

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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, 12:22pm UTC](https://community.mp3tag.de/t/no-leading-zeros-in-mp4-track-field/11097/5 "2026-02-09T12:22:40Z")

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