# For some mp4 videos impossible to edit tag, plus mp3tag sees no length, no bitrate, no frequency..etc
**URL:** https://community.mp3tag.de/t/for-some-mp4-videos-impossible-to-edit-tag-plus-mp3tag-sees-no-length-no-bitrate-no-frequency-etc/11743
**Category:** Support
**Created:** [March 18, 2011, 9:59am UTC](https://community.mp3tag.de/t/for-some-mp4-videos-impossible-to-edit-tag-plus-mp3tag-sees-no-length-no-bitrate-no-frequency-etc/11743 "2011-03-18T09:59:08Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Calireel](https://community.mp3tag.de/u/Calireel)
#### Post date: [March 18, 2011, 9:59am UTC](https://community.mp3tag.de/t/for-some-mp4-videos-impossible-to-edit-tag-plus-mp3tag-sees-no-length-no-bitrate-no-frequency-etc/11743/1 "2011-03-18T09:59:08Z")
Hello all,
Hmm i have a weird problem with some mp4 videos.
Normally i use mp4 to tag, and it all works well with mp4.
Except that now i got some videos (legally) they are supposed to have the ids written and bunch of stuff..
but when i check them in mp3tag. Nothing.
Impossible to edit tag "unable to open fil" -\> i checked if files were read only or not.
i browsed the forum but didnt get any results on this kind of problem.
mp3tag dosent sees id info, empty lenght, empty bitrate, empty frequency etc... 0
Weird things is that this happens always with the same files, but not with others ones i got from the same place.
Is it possible to send you the file for you to check why is this going on?
I didnt want to fill a bug report, as i am not sure it is a bug.
But this files play fine, audio and video, and one other software do recognizes the tags and others infos.. so i dont get what is going wrong.
Thank for the info.
---
### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [March 18, 2011, 3:20pm UTC](https://community.mp3tag.de/t/for-some-mp4-videos-impossible-to-edit-tag-plus-mp3tag-sees-no-length-no-bitrate-no-frequency-etc/11743/2 "2011-03-18T15:20:24Z")
> [@Calireel](#):
>
> ...I didnt want to fill a bug report, as i am not sure it is a bug...
Some MP4s are corrupt so that they do not show decent tag info. Happens to mp3s also.
Try to rewrite/reencode them.
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### Author:  [@Calireel](https://community.mp3tag.de/u/Calireel)
#### Post date: [March 20, 2011, 12:02pm UTC](https://community.mp3tag.de/t/for-some-mp4-videos-impossible-to-edit-tag-plus-mp3tag-sees-no-length-no-bitrate-no-frequency-etc/11743/3 "2011-03-20T12:02:07Z")
> [@ohrenkino](#):
>
> Some MP4s are corrupt so that they do not show decent tag info. Happens to mp3s also.
> Try to rewrite/reencode them.
Hi, and thanks for the reply.
Yes if i re-encode them it works.
But the thing is that those videos came directly from a pool, and they have the id3 tgas, written, the bmp info and others infos...
and if i re-encode them i loose all the info on it, no?
thanks again
---
### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [May 10, 2011, 10:33am UTC](https://community.mp3tag.de/t/for-some-mp4-videos-impossible-to-edit-tag-plus-mp3tag-sees-no-length-no-bitrate-no-frequency-etc/11743/4 "2011-05-10T10:33:07Z")
> [@Calireel](#):
>
> Hi, and thanks for the reply.
>
> Yes if i re-encode them it works.
> But the thing is that those videos came directly from a pool, and they have the id3 tgas, written, the bmp info and others infos...
> and if i re-encode them i loose all the info on it, no?
>
> thanks again
You can die only one death: either you can retrieve and edit the information or you can't and are stuck with the already supplied info ...
---
### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:22pm UTC](https://community.mp3tag.de/t/for-some-mp4-videos-impossible-to-edit-tag-plus-mp3tag-sees-no-length-no-bitrate-no-frequency-etc/11743/5 "2026-02-09T12:22:59Z")