# Mp3tag not showing MP4 file under "Filename" (Windows 10, 32-bit)
**URL:** https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311
**Category:** Support
**Created:** [July 16, 2024, 9:08pm UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311 "2024-07-16T21:08:36Z")
**Posts on this page:** 14
**Page:** 1
### Author:  [@Canuckuser](https://community.mp3tag.de/u/Canuckuser)
#### Post date: [July 16, 2024, 9:08pm UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/1 "2024-07-16T21:08:36Z")
In the screenshot is a list of files in a folder in Windows 10, 32-bit, and the same folder view in Mp3tag 3.26c:
Mp3tag doesn't show the second MP4 file. This has never happened before.
Steps to reproduce:
Using yt-dlp (x86) nightly version 2024.07.15.232803 (at github) with yt-dlp specific ffmpeg libraries version 2024-07-16-14-13, win32-gpl.zip, (at github) with the following command line:
yt-dlp\_x86 -f hls-1928+dash-aac-ffa6v1-english-primary-128000 -k --embed-metadata "h ttps://ctvnews.ca/video/c2959267-lightning-simultaneously-strikes-chicago-buildings"
(remove the space I introduced in "https://..."; the bug report shows this as an URL hyperlink instead of text for a command, and new users aren't allowed more than two hyperlinks.)
Mp3tag 3.26c doesn't show the file "Destination: Lightning simultaneously strikes Chicago buildings [2959267].fhls-1928.mp4"
I've used this yt-dlp command line before, and Mp3tag always shows all the MP4 and M4a files.
I have Mp3tag installed in portable mode. I renamed the mp3tag.cfg configuration file, restarted Mp3tag, but the same issue remains: the second MP4 file isn't listed under the "filename" view.
I renamed the second MP4 file in Windows 10, but Mp3tag still doesn't list it. The second MP4 plays in Windows media player 12 (with the K-lite codec pack 18.4.6) and Media Player Classic from the K-lite package, and Irfanview 4.67 (32-bit) with all plugins.
Appreciate any help.
July 16, 2024
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [July 16, 2024, 9:12pm UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/2 "2024-07-16T21:12:18Z")
Could you check the files according to this thread:
> [@How to check files for errors?](https://community.mp3tag.de/t/how-to-check-files-for-errors/44633/4):
>
> How to repair files identified as corrupted? If the file in question is a MP3 file which is reported as corrupted or where the MP3 header cannot be read, chances are it is an MP4 file with a \*.mp3 file extension. This often happens if online services, e.g., to download files from YouTube are involved. Changing the file extension to \*.mp4 might solve the problem. If the problematic file is a WAV or AIF file, re-saving the file with an audio-editing program like Audacity might repair the files. …
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### Author:  [@MotleyG](https://community.mp3tag.de/u/MotleyG)
#### Post date: [July 16, 2024, 9:21pm UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/3 "2024-07-16T21:21:16Z")
More details can be found here as well regarding errors when using online YouTube downloaders.
> [@When I tag mp3 files, Windows Media Player stops working](https://community.mp3tag.de/t/when-i-tag-mp3-files-windows-media-player-stops-working/55220):
>
> I have downloaded some mp3 files from youtube. I can play them with Windows Media Player. These files don't have a Title or Artist. I cannot add those in File Explorer, those fields are not editable. I can tag them with MP3TAG. However, when I do that I can not play them with windows media player, I get an error message "Windows Media Player encountered a problem while playing the file." When I look in File Explorer, the title and artist file are still empty. If I remove the tagged fields …
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### Author:  [@Canuckuser](https://community.mp3tag.de/u/Canuckuser)
#### Post date: [July 16, 2024, 9:25pm UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/4 "2024-07-16T21:25:58Z")
It's possible this unlisted MP4 file is somehow not built properly. It shows in MediaInfo:
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### Author:  [@Canuckuser](https://community.mp3tag.de/u/Canuckuser)
#### Post date: [July 16, 2024, 9:32pm UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/5 "2024-07-16T21:32:37Z")
The tools for integrity checking are for MP3 files. I realize MP3tag is for audio files and there are issues with downloaders. I'll just delete the problem file. Thanks.
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### Author:  [@AreDigg](https://community.mp3tag.de/u/AreDigg)
#### Post date: [July 17, 2024, 6:53am UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/6 "2024-07-17T06:53:50Z")
Just for your information. What you have is a fragment of a HLS video stream. It is likely because the download was not completed, cancelled or the software you use are unable to join it to a full file.
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### Author:  [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)
#### Post date: [July 17, 2024, 6:58am UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/7 "2024-07-17T06:58:00Z")
> [@AreDigg](#):
>
> What you have is a fragment of a HLS video stream
Do you get this information from the `.fhls` part of the filename?
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### Author:  [@AreDigg](https://community.mp3tag.de/u/AreDigg)
#### Post date: [July 17, 2024, 7:00am UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/8 "2024-07-17T07:00:14Z")
That is a good indication, but also that it is a MPEG-TS file, as that is how each part usually are.
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### Author:  [@Canuckuser](https://community.mp3tag.de/u/Canuckuser)
#### Post date: [July 17, 2024, 8:37am UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/9 "2024-07-17T08:37:24Z")
Before this video, I wasn't aware of HLS video streams or MPEG-TS files, they're new to me. I assumed that it using the AVC codec made it a standard MP4.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [July 17, 2024, 1:19pm UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/10 "2024-07-17T13:19:59Z")
Simply ignoring the file from being listed is probably causing more confusion than good. Thanks for reporting and the detailed explanation.
I'm using the "Tag" column to report other critical parsing errors (e.g., invalid MP3 headers), so I'll probably go in this direction with a future update.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [July 17, 2024, 6:02pm UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/11 "2024-07-17T18:02:36Z")
> [@Florian](#):
>
> I'm using the "Tag" column to report other critical parsing errors (e.g., invalid MP3 headers), so I'll probably go in this direction with a future update.
If files cannot be handled by MP3tag then some kind of colour coding might help as the "Tag" column is more in the area that has to be scrolled to.
So something like a line in red or reduced contrast ("greyed out") to emphasize that changes will not apply to this file.
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### Author:  [@AreDigg](https://community.mp3tag.de/u/AreDigg)
#### Post date: [July 17, 2024, 9:03pm UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/12 "2024-07-17T21:03:16Z")
> [@Canuckuser](#):
>
> AVC codec made it a standard MP4
The problem with MP4 is that everywhere it is treated different or misinterpreted. I wish that all formats from MPEG was just using MPEG as extension and it is up to the software to decide and interpret the format based on content. The reason is that there are a wide variety of container formats under the MPEG umbrella. AVC (codec) is part of the MPEG-4 sets of standards (MPEG4 part 10), but MP4 do not require AVC. MP4 as a container format is MPEG4 part 14, which is the 2nd version of MP4, the first version was MPEG4 part 1. They are both a subset of the so called ISO BMFF format (MPEG-4 part 12), which designates them with the codes mp41 and mp42 respectively. The "ISO BMFF" format is a formal standardizing of the Apple Quicktime format. MPEG also created MPEG-4 part 15, which is a way to encode an ISO BMFF file with AVC or HEVC more network friendly. HEVC is for some reason part of MPEG-H (part 2).
MPEG TS, PS and ES are part of MPEG-1 and MPEG-2.
MP3 which is is not really supposed to be a file format standard (It uses MPEG-1 layer III audio in a MPEG-1 Elementary Stream, both part of MPEG-1 part 3 (audio)), but due to ubiquity is a de facto one. MPEG-3 never existed, because it was folded into MPEG-2.
HLS is also one those that became de facto standards, but it is like MP3 some in-house development that are now ubiquitous. It is a playlist of files, in most implementations using MPEG-TS, but can also use the MPEG-4 containers, and is basically a M3U(8) files of all the parts. MPEG created a version for streaming called DASH.
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### Author:  [@Canuckuser](https://community.mp3tag.de/u/Canuckuser)
#### Post date: [August 2, 2024, 4:55am UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/13 "2024-08-02T04:55:27Z")
A 'Thank you - Danke' to author Florian for the newer versions of Mp3tag now flagging problem audio and MP4 files with the white X with red background icon at the start of the filename, which makes it easy to see at a glance, and other information in the 'Tag' column.
As an aside, I marvel at people who can converse in a language other than their mother tongue. I met a man from Austria who told me that he picked up basic conversational (British) English in two weeks. Another man I knew from the Netherlands said that at the age of 15 he picked up enough English in two weeks to understand it. The world would be a poorer place without translators.
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [September 1, 2024, 4:55am UTC](https://community.mp3tag.de/t/mp3tag-not-showing-mp4-file-under-filename-windows-10-32-bit/65311/14 "2024-09-01T04:55:28Z")
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