# Keep moov atom at end of file after editing with mp3tag
**URL:** https://community.mp3tag.de/t/keep-moov-atom-at-end-of-file-after-editing-with-mp3tag/41254
**Category:** Support
**Created:** [March 29, 2018, 11:15pm UTC](https://community.mp3tag.de/t/keep-moov-atom-at-end-of-file-after-editing-with-mp3tag/41254 "2018-03-29T23:15:07Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Invindicator](https://community.mp3tag.de/u/Invindicator)
#### Post date: [March 29, 2018, 11:15pm UTC](https://community.mp3tag.de/t/keep-moov-atom-at-end-of-file-after-editing-with-mp3tag/41254/1 "2018-03-29T23:15:07Z")
Hey Florian,
Was wondering if there was any way to set mp3tag to leave the moov atom at the end of an mp4 file after tags have been added/edited instead of mooving it to the top of the file
Regards, Nick
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [March 30, 2018, 10:05am UTC](https://community.mp3tag.de/t/keep-moov-atom-at-end-of-file-after-editing-with-mp3tag/41254/2 "2018-03-30T10:05:46Z")
Hi Nick,
this is not exposed as a configuration setting. Any specific reason why you're asking?
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### Author:  [@Invindicator](https://community.mp3tag.de/u/Invindicator)
#### Post date: [March 30, 2018, 10:27am UTC](https://community.mp3tag.de/t/keep-moov-atom-at-end-of-file-after-editing-with-mp3tag/41254/3 "2018-03-30T10:27:06Z")
Main reason being if I wish to change any metadata through a hex editor it makes life really easy as any adjustment to the size of the moov atom if it comes BEFORE the mdat atom will throw off all the trak positions and break the file. If the moov atom is AFTER mdat then these size changes dont matter š
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### Author:  [@Etz](https://community.mp3tag.de/u/Etz)
#### Post date: [March 30, 2018, 6:19pm UTC](https://community.mp3tag.de/t/keep-moov-atom-at-end-of-file-after-editing-with-mp3tag/41254/4 "2018-03-30T18:19:20Z")
Well, yet again for streaming (DLNA, etc) purposes, it would be better to have it at the beggining of the file.
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### Author:  [@Invindicator](https://community.mp3tag.de/u/Invindicator)
#### Post date: [March 30, 2018, 11:31pm UTC](https://community.mp3tag.de/t/keep-moov-atom-at-end-of-file-after-editing-with-mp3tag/41254/5 "2018-03-30T23:31:52Z")
I am aware of this, Iām just stating there are cases where I will be editing the size of the moov atom and life becomes a whole lot easier if this is at the end of the file.
Some files will be better with it at the end and others with it at the front, there are benefits to both. I was just asking if this was a feature and if not could possibly be a feature at some point
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:27pm UTC](https://community.mp3tag.de/t/keep-moov-atom-at-end-of-file-after-editing-with-mp3tag/41254/6 "2026-02-09T12:27:20Z")