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RATING Tag Issues

See original GitHub issue

Hello, some notes…

I think in the typings, the field ‘rating’ should be an array like: image

Next strange thing is, that I have a mp3 file with a rating of 3. If I read the file with music-metadata, the value is like 2.500000341. So i have to do a const rating = Math.round(oldAudioData.metadata.common.rating[0].rating)

Thanks, and best regards!

Issue Analytics

  • State:closed
  • Created 5 years ago
  • Comments:8 (6 by maintainers)

github_iconTop GitHub Comments

Borewitcommented, Jul 3, 2018

Hi George,

The track you provided has a POPM field set with a raw value of 128. Where 0 is not rated, 1 worst and 255 is the best rating. So the score is (128 - 1) / 254 ≈ 0.504.

The rating in Mp3Tag is defined like this:

Track rating from 1 = Bad to 5 = Very good like Windows Media Player does it. You can also enter stars * for rating the track.

That is range of 4 (because 0 is stars is not included). Number of stars is: 1 + 0.504 * 4 ≈ 1 + 2 ≈ 3 stars.

I guess should correct two things

  • Add the -1 in (128 - 1) / 254 ≈ 0.504 and should be divided by 254 to make the max score inclusive.
  • Change the definition of the [0…5] range, because this is very confusing. Maybe [0…1] to be clearly different then the [1…5] star rating.
Borewitcommented, Jul 5, 2018

Implemented / fixed in v2.3.0

Read more comments on GitHub >

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