# Some MP4 files are not listed when starting from context menu
**URL:** https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562
**Category:** Support
**Created:** [March 31, 2023, 7:27pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562 "2023-03-31T19:27:27Z")
**Posts on this page:** 17
**Page:** 1
### Author:  [@Reluctant\_Poster](https://community.mp3tag.de/u/Reluctant_Poster)
#### Post date: [March 31, 2023, 7:27pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/1 "2023-03-31T19:27:27Z")
I have ensured that the download executed properly, restarted my PC, and everything else looks fine but if I right-click on an mp3 and select MP3 Tag, it brings up the screen but with no file selected. If I change directories to see files, it only shows those files that already have MP3 Tags.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [March 31, 2023, 7:31pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/2 "2023-03-31T19:31:40Z")
Could it be that you have applied a filter?
Press F3 to toggle the filter and see whether the files that you expect will appear.
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### Author:  [@Reluctant\_Poster](https://community.mp3tag.de/u/Reluctant_Poster)
#### Post date: [March 31, 2023, 7:44pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/3 "2023-03-31T19:44:58Z")
Nope. F3 shows no filters applied.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [March 31, 2023, 7:47pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/4 "2023-03-31T19:47:38Z")
It could be that you have just a space as filter.
That is why I asked whether the number of files in display changed.
Also, you can see in the statusbar at the bottom how many files are loaded and how many are displayed.
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### Author:  [@MotleyG](https://community.mp3tag.de/u/MotleyG)
#### Post date: [March 31, 2023, 7:56pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/5 "2023-03-31T19:56:10Z")
I can't duplicate this, on two different machines. Both are Win10 x64 and have v3.20 installed. I have tried different music file types (mp3/flac/m4a) using right click on files and folders, as well as from within mp3tag. All files are opening and displayed as expected.
You mention only files open that already have tags. So the ones that don't show up I assume are newer files, and have no tags at all? Do you at least have a column for "Filename" so something can show up?
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### Author:  [@Reluctant\_Poster](https://community.mp3tag.de/u/Reluctant_Poster)
#### Post date: [March 31, 2023, 8:08pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/6 "2023-03-31T20:08:17Z")
Yes, I have the filename column first--everything is in the default configuration. It will respond normally and display the filename of files that have an existing tag, but not those that don't.
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### Author:  [@Reluctant\_Poster](https://community.mp3tag.de/u/Reluctant_Poster)
#### Post date: [March 31, 2023, 8:11pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/7 "2023-03-31T20:11:54Z")
If untagged, I get 0 files loaded and 0 displayed. Is it possible that the program rejects filenames with parentheses or other marks that Win10 accepts?
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [March 31, 2023, 8:12pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/8 "2023-03-31T20:12:45Z")
MP3tag does not load e.g. mp4 files that have an unsupported format
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### Author:  [@MotleyG](https://community.mp3tag.de/u/MotleyG)
#### Post date: [March 31, 2023, 8:13pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/9 "2023-03-31T20:13:05Z")
MP3TAG will typically at least list files, even if they have corrupt headers. But perhaps there is something else wrong. Perhaps a check of the file integrity is needed?
> [@How to check files for errors?](https://community.mp3tag.de/t/how-to-check-files-for-errors/44633):
>
> It’s required and often helps to reduce support cycles to check files for errors before filing a bug report. Symptoms of erroneous files are often missing or wrong bitrate or length audible blips or skips tags seem to be sticky and cannot be removed There are some really good tools to check the files for errors, namely MP3 Diags — identifies many different issues in MP3 files Website: [http://mp3diags.sourceforge.net](http://mp3diags.sourceforge.net) Download: [MP3 Diags - Getting MP3 Diags](http://mp3diags.sourceforge.net/010_getting_the_program.html#binWindows) If the font size in MP3 Diags is …
Otherwise perhaps you can share a file here to be looked at?
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### Author:  [@Reluctant\_Poster](https://community.mp3tag.de/u/Reluctant_Poster)
#### Post date: [March 31, 2023, 8:27pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/10 "2023-03-31T20:27:43Z")
Thanks! I will take some time with that when I can and see what it can identify. All of the files play fine on common programs like default Windows players and JRiver Media Center, so I assumed that meant that the formats / format info had to be good enough to make them usable.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [March 31, 2023, 8:30pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/11 "2023-03-31T20:30:31Z")
That files "play" does not mean that they are OK.
If you are fine with just playable files then you can stop here. Otherwise, you have to some more investigation.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [March 31, 2023, 10:48pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/12 "2023-03-31T22:48:36Z")
Can you post a screenshot of one folder listed in Mp3tag and Windows Explorer which shows the issue?
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### Author:  [@Reluctant\_Poster](https://community.mp3tag.de/u/Reluctant_Poster)
#### Post date: [March 31, 2023, 11:24pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/13 "2023-03-31T23:24:18Z")
This probably isn't the best example since it is mostly MP4, but it's the one I had up at the moment. MP3Tag sees a couple of them.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [April 1, 2023, 12:24pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/14 "2023-04-01T12:24:18Z")
Yes, hard to tell what's with the files that are not listed. Can you share one of those?
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### Author:  [@Reluctant\_Poster](https://community.mp3tag.de/u/Reluctant_Poster)
#### Post date: [April 3, 2023, 8:05pm UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/15 "2023-04-03T20:05:12Z")
I think I can show this as resolved. I ran into a suggestion elsewhere to re-containerize the files that weren't showing via the VLC "convert" function, and see if they then showed in MP3Tag, and that worked. The only thing that puzzles me a bit is why I had not had the issue with prior MP3Tag versions and it only came up after an update. In any case, that is not a problem that needs solving. Thanks for the input / help here.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [April 4, 2023, 9:57am UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/16 "2023-04-04T09:57:29Z")
OK, thanks for confirming
> [@Some MP4 files are not listed when starting from context menu](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/8):
>
> MP3tag does not load e.g. mp4 files that have an unsupported format
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [May 4, 2023, 9:58am UTC](https://community.mp3tag.de/t/some-mp4-files-are-not-listed-when-starting-from-context-menu/60562/17 "2023-05-04T09:58:25Z")
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