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Expose Grouping from other metadata schemes besides ID3, re issue #563 #576

TheOldPresbyope opened this issue Jun 8, 2019 · 1 comment


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commented Jun 8, 2019

Issue #563 was closed with commit 319c969 but this extracts the new metadata tag value only from ID3-tagged source. Could we please extend this to include other major tagging schemes? I'm most concerned about the Vorbis Comments in my FLAC files but I'm sure other MPD users have their favorites.

The metadata editors I'm aware of equate the ID3 TIT1 (grouping) with the following

scheme name
ASF/WMA WM/ContentGroupDescription
iTunes/MP4 (at)grp
Ogg/Vorbis Comment (FLAC) GROUPING

(A useful cross-reference table can be found at, e.g.,

I'm uncertain about the exact encoding in iTunes/MP4. As well, I used (at) to represent the "at" symbol (which github wants to interpret).


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commented Jun 11, 2019

but this extracts the new metadata tag value only from ID3-tagged source

Demonstrate that this assertion is true.

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