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IDProjectCategoryView StatusLast Update
0021253MMW 5Tagging / organizing (properties / auto-tools)public2024-10-16 20:34
Reporterrusty Assigned To 
PriorityurgentSeveritymajorReproducibilityalways
Status assignedResolutionopen 
Product Version5.1 
Target Version5.1 
Summary0021253: Auto-tag: tracks on compilation map to incorrect albums / fails to group tracks as part of a single album release
DescriptionFor the album Olivia Newton-John - Greatest Hits Volume 2 (https://musicbrainz.org/release/01bdaffa-365c-446a-b579-d221e59a2608), using auto-tag recommends metadata changes that are completely incorrect, violating 2 auto-tagging rules:
- It changes the Album for most tracks to 'Physical' even though the tracks don't exist on that album
- It changes one of the track's album to 'Totally Hot' even though the tracks are all from a single album

If the user chooses to enable Compilations, then MM shouldn't strive to find the earliest match to a track. And if compilations are enabled and the existing metadata has consecutive tracks 1 to x and a common Album Artist/Album, then MM should have the smarts to realize that the tracks are part of a single album.
Additional InformationReported at ticket 7693
TagsNo tags attached.
Fixed in build3064

Relationships

related to 0021240 feedbackpetr Auto-tag: sometimes recommends compilations instead of albums 

Activities

lowlander

2024-10-08 17:24

developer   ~0077213

Last edited: 2024-10-08 17:25

It seems to matching to deluxe edition: https://musicbrainz.org/release/4839b9f7-4512-4d33-ac97-8d2852ff3ff0

3. One problem is that Audio Tracks are matched with DVD video files
4. Maybe there should be an option to 'Allow special editions', just like Allow compilations

rusty

2024-10-08 17:32

administrator   ~0077214

Last edited: 2024-10-08 18:03

I was able to replicate a similar issue with Aerosmith Greatest Hits. Auto tag changed the Album, Year, Track# metadata from:
https://musicbrainz.org/release/76d525e7-4488-4530-be16-0c52fcdc4fbd
to some mix of releases of that Album resulting in four tracks being labelled as track #1!

A similar issue occurs with R.E.M. - Eponymous ; the lookups are split across multiple releases of the album causing track numbers to change incorrectly.

rusty

2024-10-08 17:39

administrator   ~0077215

When I try to look up: April Wine - Greatest hits ( https://musicbrainz.org/release/c65cabc6-e749-4da6-9ab4-a6360af3af23 )
-->
It starts looking up metadata and then:
Error code: The given parameters do not match any available query type for the release-group resource.

rusty

2024-10-08 17:48

administrator   ~0077216

Last edited: 2024-10-08 17:53

When I try to look up Dirty Dancing Soundtrack ( https://musicbrainz.org/release/333a3e35-4251-4962-a2b1-5b2507ca0044 ), Auto-tag splits the lookup across 2 releases of Dirty Dancing and some other Top 40 album! Similar issues for 'The Big Chill' soundtrack.

Compilation albums such as Pure Funk or Women & Song also have the same issues

rusty

2024-10-15 20:49

administrator   ~0077298

Tested 3064:
ONJ - verified
Aerosmith - Not fixed. Recommended album is a superset of the actual album (see attached)!
R.E.M. - Not fixed. MM still finds all tracks from 'The Collection' instead of Eponymous!
April Wine - Partially fixed. An error still appears, but the recommended metadata is split across 2 albums!
Pure Funk - Not fixed - metadata is split across numerous albums!

I haven't tested Dirty Dancing and The Big Chill since they're not yet fixed.
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rusty

2024-10-16 13:29

administrator   ~0077304

So it turns out that the remaining issue only occurs when 'Prefer faster metadata lookups when possible (instead of slower audio fingerprinting)' is disabled (it's enabled by default).

Nonetheless, I wouldn't have expected the option to negatively affect results. In the cases above I'd have expected that it might change the title but that auto-tag would still be able to determine whether a set of tracks are from a single album or not (especially with the compilation option enabled, but even if not, auto-tag should be able to determine if a set of tracks are part of an album--although this is complicated since in some cases it may be preferable to find the first instance of the track).

Possible improvements:
a) a fix (TBD -- as described above, it's unclear what behavior would be best)
b) make this option a 'run-time' option like compliations so that users can choose what approach to take for a given set of tracks
c) rename the option to make it clearer that it ignores existing non-title metadata
d) add a tooltip to clarify

Given that it's enabled by default, we should probably push this and examine possible optimizations post-5.1.