Copyright notice and purchase date · nicfit/eyeD3#603

(2 留言) (0 反應) (0 負責人)Python (487 star) (58 fork)batch import

help wanted

描述

I would like to be able to read the copyright notice, copyright flag, and purchase date. And add them if they are not there.

Apple's Music.app can convert an AAC to MP3, but when it does so, it removes purchase date and adds copyright flag = false. (The latter has no apparent effect—Music still displays the copyright notice.)

I would like to restore the purchase date and remove the apparently useless (and misleading) copyright flag. And when I import tracks from my CDs or downloaded MP3 files, I like to add the applicable copyright notice, if known.

I convert to MP3 because they are smaller, and the sound quality is adequate for the devices I play them on.

I can read these three tags with exiftool, but exiftool cannot write to MP3 files.

貢獻者指南

技術棧: python
領域: backendcli
議題類型: feature
難度: 3
預計時間: 1-3 hours
活動狀態: stale
清晰度: clear
前置要求: Python programmingID3 tag knowledgeeyeD3 library basics
新手友善度: 65
研究方向: Review eyeD3's source code for existing tag fields (e.g., title, artist) in eyeD3/tag.py and eyeD3/id3.py to understand how they are read and written. Look for the ID3 v2.3/2.4 frame IDs for copyright notice (TCOP), copyright flag (not standard in ID3v2), and purchase date (e.g., PURD or custom). Check the test directory for patterns to add new tests. The issue mentions Apple Music sets copyright flag = false; investigate if this maps to the 'cop' frame in eyeD3. Start by adding read support for these frames, then write support. Ensure backward compatibility.