I'm trying to learn how Mp3tag's FIELD translates to the file's metadata. For example, the field ITUNESCATALOGID in Mp3tag is "apple_store_catalog_id" in the exif/file metadata. I want to learn how I can create a new FIELD in Mp3tag that can edit the file metadata that is not yet being shown in Mp3tag. I know that this is possible because the field ITUNESOWNER (it's "user_name" in the exif) wasn't editable in Mp3tag until an update (I forgot which version exactly but I remember it wasn't possible to edit user_name in Mp3tag before ITUNESOWNER field is now readable).
This is an example that there are lots of metadata not being shown in Mp3tag that exists in the audio file:
Yes I did. The tags in the link shows a lot more than extended tags. I did some research and turns out what I was looking for might fall into the Private frame https://id3.org/id3v2.3.0#Private_frame, so I guess no luck for me.
You will see only field descriptions of supported fields.
And these would be displayed in MP3tag's extended tags dialogue if they can be found in a file.
If you feel like it, you could check the file with a hex editor and see where and how the so far unsupported fields are stored in the file.
PRIV frames are not supported.
This list shows all of the fields that mp3tag is natively able to show and edit. You can also add your own personal custom fields, but it is highly unlikely that typical players would be able to use them. They are more useful as containers for details you would find informative but wouldn't otherwise be found within the concept of the other fields.
There are so many standard fields, it is possible there are some that you could use for the text you want to store. Even if it is temporary. I would look to that list first and see if something there is a solution for your needs. Plus there is a higher chance that the info would also be usable in other applications.
