What happens to the tags in mp3 files?

Just edited a music track of mine with a number of tags like Composer, Original Artist, Copyright, URL, Encoded by, Album Artist, Conductor, Label, Remixed by, Grouping. Subtitle, Release time, Sort title, Sort Artist, Sort show and all these had been deleted in the export. These are regular
Luckily, I had a copy of the original file so could copy the tags from one to another. This is a time consuming exercise to save both copies in the folder, copy & paste using Tag&Rename, delete the old file, then rename the new file. I used to use NCH’s WavePad which automatically saved the tags.
I’ve tried to follow the instructions on Exporting Metadata, but I’m not seeing the options on the Export box to do it automatically. I would have to add each tag to each file manually. Surely if the tags are there in the original, the app can port them to the new file?
Any clues please?

Audacity is poor at handling metadata - there is a super-issue logged on Muse’s GitHub issues log:

It looks as though Muse are not intending to fix those, as most (all) are Closes as “Not Planned”.

When I digitized my many LPs and tapes I exported without metadata and then used iTunes to input and manage my metadata. I appreciate your problem is different as you are editing files that already carry metadata.

Peter.

It’s tricky because there is more than one ID3 standard (Id3tag.org seems to have gone away but I found this.)

And different file formats use different tagging standards (I think only MP3 uses ID3) so if you are converting from one format to another and they also have different fields or different field-lengths & specifications, etc.

And then there other tags, such as ReplayGain, which aren’t part of ID3 and may not be standard for any other format. Song “Rating” is not standard either, but most player software has a way to rate songs.

And most player software doesn’t seem to support all fields included in all formats.

It MIGHT be a little easier with Mp3Tag I believe MP3Tag can copy all of the tags from one file to another so it shouldn’t be too hard if you have both files. And it has some batch processing capabilities.

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