Question 1

How to extract album art from MP3 files using Go?

Accepted Answer

Use the GetFrames method with the 'Attached picture' common ID to retrieve picture frames. Each frame can be asserted to a PictureFrame to access the image data and description, as shown in the README example for multiple frames.

Question 2

Is bogem/id3v2 better than taglib-go for ID3 editing?

Accepted Answer

bogem/id3v2 is a pure Go implementation focused on ID3 v2.3/v2.4 with no external dependencies, while taglib-go offers broader format support but relies on C bindings. Choose id3v2 for dependency-free Go projects needing strict ID3 compliance.

Question 3

Does id3v2 support writing ID3 v1 tags?

Accepted Answer

No, id3v2 only handles ID3 v2.3 and v2.4 specifications. For ID3 v1 support, you would need an additional library or to implement it separately, as it's not covered in the features.

Question 4

How to handle UTF-16 encoded text in ID3 tags with this library?

Accepted Answer

Set the Encoding field to id3v2.EncodingUTF16 when creating frames like CommentFrame. The library automatically encodes the text with UTF-16BE and BOM, as mentioned in the encodings section of the README.

Question 5

Can I use id3v2 to batch edit MP3 metadata in a folder?

Accepted Answer

Yes, by iterating over files, opening each with id3v2.Open, modifying tags using methods like SetArtist, and saving with tag.Save. Ensure proper error handling and use defer tag.Close() to manage resources.

Question 6

What are common errors when saving tags with id3v2 and how to fix them?

Accepted Answer

Common errors include file permission issues or invalid frame data. Check that the file is writable, verify frame encodings are set correctly, and ensure the tag is properly parsed before saving to avoid corruption.

Question 7

How to add custom frames not covered by the standard API?

Accepted Answer

Use the AddFrame method with a custom frame ID and data, referring to the ID3 specification for frame formats. The library's low-level frame manipulation allows for this, but you'll need to handle encoding and structure manually.

id3v2

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