# MP4 length of first chapter is displayed if chapter display is disabled
**URL:** https://community.mp3tag.de/t/mp4-length-of-first-chapter-is-displayed-if-chapter-display-is-disabled/44331
**Category:** Fixed Bugs
**Tags:** bug-fixed
**Created:** [January 27, 2019, 4:58pm UTC](https://community.mp3tag.de/t/mp4-length-of-first-chapter-is-displayed-if-chapter-display-is-disabled/44331 "2019-01-27T16:58:21Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@chuck](https://community.mp3tag.de/u/chuck)
#### Post date: [January 27, 2019, 4:58pm UTC](https://community.mp3tag.de/t/mp4-length-of-first-chapter-is-displayed-if-chapter-display-is-disabled/44331/1 "2019-01-27T16:58:21Z")
Hello,
I have found another tag for MP4 files that is not correct: "_length_" I verified it was working on 2.91. I will be glad to test a fix at some point if you have one.
Thank you.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [January 27, 2019, 5:10pm UTC](https://community.mp3tag.de/t/mp4-length-of-first-chapter-is-displayed-if-chapter-display-is-disabled/44331/2 "2019-01-27T17:10:11Z")
> [@Some iTunes tags no longer working with v2.92](https://community.mp3tag.de/t/some-itunes-tags-no-longer-working-with-v2-92/44312/8):
>
> I have found another tag for MP4 files that is not correct: " _length_ "
Can you describe what you've observed and what you've expected and possibly also provide an example file?
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### Author:  [@chuck](https://community.mp3tag.de/u/chuck)
#### Post date: [January 27, 2019, 5:14pm UTC](https://community.mp3tag.de/t/mp4-length-of-first-chapter-is-displayed-if-chapter-display-is-disabled/44331/3 "2019-01-27T17:14:46Z")
Sure. I have a column showing the total time of an MP4, %_length_%. Previously, it would show the total length of the MP4 video (i.e. around 2 hours). As of 2.92, it started to show very short lengths (seem to be different between MP4 files) on the order of a few minutes/seconds. I will see if I can create a short video that shows the problem for you, but hope this information helps you get started.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [January 27, 2019, 5:25pm UTC](https://community.mp3tag.de/t/mp4-length-of-first-chapter-is-displayed-if-chapter-display-is-disabled/44331/4 "2019-01-27T17:25:44Z")
OK, based on your description I think I found the issue. It's showing the length of the first chapter of the file if the MP4 file has chapters.
I'll fix it to the next release and keep you posted. Thanks for reporting!
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [February 8, 2019, 9:24am UTC](https://community.mp3tag.de/t/mp4-length-of-first-chapter-is-displayed-if-chapter-display-is-disabled/44331/5 "2019-02-08T09:24:30Z")
I've fixed this with [Mp3tag 2.93a](https://community.mp3tag.de/t/455). Thanks again for reporting!
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### Author:  [@chuck](https://community.mp3tag.de/u/chuck)
#### Post date: [February 8, 2019, 2:32pm UTC](https://community.mp3tag.de/t/mp4-length-of-first-chapter-is-displayed-if-chapter-display-is-disabled/44331/6 "2019-02-08T14:32:11Z")
Thank you very much for fixing the issue. I verified it fixed the issue I encountered.
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [March 10, 2019, 2:32pm UTC](https://community.mp3tag.de/t/mp4-length-of-first-chapter-is-displayed-if-chapter-display-is-disabled/44331/7 "2019-03-10T14:32:16Z")
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