update

2025-12-08 16:16:23 +01:00
commit c251f174ed
1349 changed files with 194301 additions and 0 deletions
--- a/scanner/metadata_old/ffmpeg/ffmpeg.go
+++ b/scanner/metadata_old/ffmpeg/ffmpeg.go
@@ -0,0 +1,211 @@
+package ffmpeg
+
+import (
+	"bufio"
+	"context"
+	"errors"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/navidrome/navidrome/core/ffmpeg"
+	"github.com/navidrome/navidrome/log"
+	"github.com/navidrome/navidrome/scanner/metadata_old"
+)
+
+const ExtractorID = "ffmpeg"
+
+type Extractor struct {
+	ffmpeg ffmpeg.FFmpeg
+}
+
+func (e *Extractor) Parse(files ...string) (map[string]metadata_old.ParsedTags, error) {
+	output, err := e.ffmpeg.Probe(context.TODO(), files)
+	if err != nil {
+		log.Error("Cannot use ffmpeg to extract tags. Aborting", err)
+		return nil, err
+	}
+	fileTags := map[string]metadata_old.ParsedTags{}
+	if len(output) == 0 {
+		return fileTags, errors.New("error extracting metadata files")
+	}
+	infos := e.parseOutput(output)
+	for file, info := range infos {
+		tags, err := e.extractMetadata(file, info)
+		// Skip files with errors
+		if err == nil {
+			fileTags[file] = tags
+		}
+	}
+	return fileTags, nil
+}
+
+func (e *Extractor) CustomMappings() metadata_old.ParsedTags {
+	return metadata_old.ParsedTags{
+		"disc":         {"tpa"},
+		"has_picture":  {"metadata_block_picture"},
+		"originaldate": {"tdor"},
+	}
+}
+
+func (e *Extractor) Version() string {
+	return e.ffmpeg.Version()
+}
+
+func (e *Extractor) extractMetadata(filePath, info string) (metadata_old.ParsedTags, error) {
+	tags := e.parseInfo(info)
+	if len(tags) == 0 {
+		log.Trace("Not a media file. Skipping", "filePath", filePath)
+		return nil, errors.New("not a media file")
+	}
+
+	return tags, nil
+}
+
+var (
+	// Input #0, mp3, from 'groovin.mp3':
+	inputRegex = regexp.MustCompile(`(?m)^Input #\d+,.*,\sfrom\s'(.*)'`)
+
+	//    TITLE           : Back In Black
+	tagsRx = regexp.MustCompile(`(?i)^\s{4,6}([\w\s-]+)\s*:(.*)`)
+
+	//                    : Second comment line
+	continuationRx = regexp.MustCompile(`(?i)^\s+:(.*)`)
+
+	//  Duration: 00:04:16.00, start: 0.000000, bitrate: 995 kb/s`
+	durationRx = regexp.MustCompile(`^\s\sDuration: ([\d.:]+).*bitrate: (\d+)`)
+
+	//    Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 192 kb/s
+	bitRateRx = regexp.MustCompile(`^\s{2,4}Stream #\d+:\d+: Audio:.*, (\d+) kb/s`)
+
+	//    Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 192 kb/s
+	//    Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
+	//    Stream #0:0: Audio: dsd_lsbf_planar, 352800 Hz, stereo, fltp, 5644 kb/s
+	audioStreamRx = regexp.MustCompile(`^\s{2,4}Stream #\d+:\d+.*: Audio: (.*), (.*) Hz, ([\w.]+),*(.*.,)*`)
+
+	//    Stream #0:1: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 600x600 [SAR 1:1 DAR 1:1], 90k tbr, 90k tbn, 90k tbc`
+	coverRx = regexp.MustCompile(`^\s{2,4}Stream #\d+:.+: (Video):.*`)
+)
+
+func (e *Extractor) parseOutput(output string) map[string]string {
+	outputs := map[string]string{}
+	all := inputRegex.FindAllStringSubmatchIndex(output, -1)
+	for i, loc := range all {
+		// Filename is the first captured group
+		file := output[loc[2]:loc[3]]
+
+		// File info is everything from the match, up until the beginning of the next match
+		info := ""
+		initial := loc[1]
+		if i < len(all)-1 {
+			end := all[i+1][0] - 1
+			info = output[initial:end]
+		} else {
+			// if this is the last match
+			info = output[initial:]
+		}
+		outputs[file] = info
+	}
+	return outputs
+}
+
+func (e *Extractor) parseInfo(info string) map[string][]string {
+	tags := map[string][]string{}
+
+	reader := strings.NewReader(info)
+	scanner := bufio.NewScanner(reader)
+	lastTag := ""
+	for scanner.Scan() {
+		line := scanner.Text()
+		if len(line) == 0 {
+			continue
+		}
+		match := tagsRx.FindStringSubmatch(line)
+		if len(match) > 0 {
+			tagName := strings.TrimSpace(strings.ToLower(match[1]))
+			if tagName != "" {
+				tagValue := strings.TrimSpace(match[2])
+				tags[tagName] = append(tags[tagName], tagValue)
+				lastTag = tagName
+				continue
+			}
+		}
+
+		if lastTag != "" {
+			match = continuationRx.FindStringSubmatch(line)
+			if len(match) > 0 {
+				if tags[lastTag] == nil {
+					tags[lastTag] = []string{""}
+				}
+				tagValue := tags[lastTag][0]
+				tags[lastTag][0] = tagValue + "\n" + strings.TrimSpace(match[1])
+				continue
+			}
+		}
+
+		lastTag = ""
+		match = coverRx.FindStringSubmatch(line)
+		if len(match) > 0 {
+			tags["has_picture"] = []string{"true"}
+			continue
+		}
+
+		match = durationRx.FindStringSubmatch(line)
+		if len(match) > 0 {
+			tags["duration"] = []string{e.parseDuration(match[1])}
+			if len(match) > 1 {
+				tags["bitrate"] = []string{match[2]}
+			}
+			continue
+		}
+
+		match = bitRateRx.FindStringSubmatch(line)
+		if len(match) > 0 {
+			tags["bitrate"] = []string{match[1]}
+		}
+
+		match = audioStreamRx.FindStringSubmatch(line)
+		if len(match) > 0 {
+			tags["samplerate"] = []string{match[2]}
+			tags["channels"] = []string{e.parseChannels(match[3])}
+		}
+	}
+
+	comment := tags["comment"]
+	if len(comment) > 0 && comment[0] == "Cover (front)" {
+		delete(tags, "comment")
+	}
+
+	return tags
+}
+
+var zeroTime = time.Date(0000, time.January, 1, 0, 0, 0, 0, time.UTC)
+
+func (e *Extractor) parseDuration(tag string) string {
+	d, err := time.Parse("15:04:05", tag)
+	if err != nil {
+		return "0"
+	}
+	return strconv.FormatFloat(d.Sub(zeroTime).Seconds(), 'f', 2, 32)
+}
+
+func (e *Extractor) parseChannels(tag string) string {
+	switch tag {
+	case "mono":
+		return "1"
+	case "stereo":
+		return "2"
+	case "5.1":
+		return "6"
+	case "7.1":
+		return "8"
+	default:
+		return "0"
+	}
+}
+
+// Inputs will always be absolute paths
+func init() {
+	metadata_old.RegisterExtractor(ExtractorID, &Extractor{ffmpeg: ffmpeg.New()})
+}
--- a/scanner/metadata_old/ffmpeg/ffmpeg_suite_test.go
+++ b/scanner/metadata_old/ffmpeg/ffmpeg_suite_test.go
@@ -0,0 +1,17 @@
+package ffmpeg
+
+import (
+	"testing"
+
+	"github.com/navidrome/navidrome/log"
+	"github.com/navidrome/navidrome/tests"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestFFMpeg(t *testing.T) {
+	tests.Init(t, true)
+	log.SetLevel(log.LevelFatal)
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "FFMpeg Suite")
+}
--- a/scanner/metadata_old/ffmpeg/ffmpeg_test.go
+++ b/scanner/metadata_old/ffmpeg/ffmpeg_test.go
@@ -0,0 +1,375 @@
+package ffmpeg
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Extractor", func() {
+	var e *Extractor
+	BeforeEach(func() {
+		e = &Extractor{}
+	})
+
+	Context("extractMetadata", func() {
+		It("extracts MusicBrainz custom tags", func() {
+			const output = `
+Input #0, ape, from './Capture/02 01 - Symphony No. 5 in C minor, Op. 67 I. Allegro con brio - Ludwig van Beethoven.ape':
+  Metadata:
+    ALBUM           : Forever Classics
+    ARTIST          : Ludwig van Beethoven
+    TITLE           : Symphony No. 5 in C minor, Op. 67: I. Allegro con brio
+    MUSICBRAINZ_ALBUMSTATUS: official
+    MUSICBRAINZ_ALBUMTYPE: album
+    MusicBrainz_AlbumComment: MP3
+    Musicbrainz_Albumid: 71eb5e4a-90e2-4a31-a2d1-a96485fcb667
+    musicbrainz_trackid: ffe06940-727a-415a-b608-b7e45737f9d8
+    Musicbrainz_Artistid: 1f9df192-a621-4f54-8850-2c5373b7eac9
+    Musicbrainz_Albumartistid: 89ad4ac3-39f7-470e-963a-56509c546377
+    Musicbrainz_Releasegroupid: 708b1ae1-2d3d-34c7-b764-2732b154f5b6
+    musicbrainz_releasetrackid: 6fee2e35-3049-358f-83be-43b36141028b
+    CatalogNumber   : PLD 1201
+`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(SatisfyAll(
+				HaveKeyWithValue("catalognumber", []string{"PLD 1201"}),
+				HaveKeyWithValue("musicbrainz_trackid", []string{"ffe06940-727a-415a-b608-b7e45737f9d8"}),
+				HaveKeyWithValue("musicbrainz_albumid", []string{"71eb5e4a-90e2-4a31-a2d1-a96485fcb667"}),
+				HaveKeyWithValue("musicbrainz_artistid", []string{"1f9df192-a621-4f54-8850-2c5373b7eac9"}),
+				HaveKeyWithValue("musicbrainz_albumartistid", []string{"89ad4ac3-39f7-470e-963a-56509c546377"}),
+				HaveKeyWithValue("musicbrainz_albumtype", []string{"album"}),
+				HaveKeyWithValue("musicbrainz_albumcomment", []string{"MP3"}),
+			))
+		})
+
+		It("detects embedded cover art correctly", func() {
+			const output = `
+Input #0, mp3, from '/Users/deluan/Music/iTunes/iTunes Media/Music/Compilations/Putumayo Presents Blues Lounge/09 Pablo's Blues.mp3':
+  Metadata:
+    compilation     : 1
+  Duration: 00:00:01.02, start: 0.000000, bitrate: 477 kb/s
+    Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 192 kb/s
+    Stream #0:1: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 600x600 [SAR 1:1 DAR 1:1], 90k tbr, 90k tbn, 90k tbc`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("has_picture", []string{"true"}))
+		})
+
+		It("detects embedded cover art in ffmpeg 4.4 output", func() {
+			const output = `
+Input #0, flac, from '/run/media/naomi/Archivio/Musica/Katy Perry/Chained to the Rhythm/01 Katy Perry featuring Skip Marley - Chained to the Rhythm.flac':
+  Metadata:
+    ARTIST          : Katy Perry featuring Skip Marley
+  Duration: 00:03:57.91, start: 0.000000, bitrate: 983 kb/s
+  Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
+  Stream #0:1: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 599x518, 90k tbr, 90k tbn, 90k tbc (attached pic)
+    Metadata:
+      comment         : Cover (front)`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("has_picture", []string{"true"}))
+		})
+
+		It("detects embedded cover art in ogg containers", func() {
+			const output = `
+Input #0, ogg, from '/Users/deluan/Music/iTunes/iTunes Media/Music/_Testes/Jamaican In New York/01-02 Jamaican In New York (Album Version).opus':
+  Duration: 00:04:28.69, start: 0.007500, bitrate: 139 kb/s
+    Stream #0:0(eng): Audio: opus, 48000 Hz, stereo, fltp
+    Metadata:
+      ALBUM           : Jamaican In New York
+      metadata_block_picture: AAAAAwAAAAppbWFnZS9qcGVnAAAAAAAAAAAAAAAAAAAAAAAAAAAAA4Id/9j/4AAQSkZJRgABAQEAYABgAAD/2wBDAAMCAgMCAgMDAwMEAwMEBQgFBQQEBQoHBwYIDAoMDAsKCwsNDhIQDQ4RDgsLEBYQERMUFRUVDA8XGBYUGBIUFRT/2wBDAQMEBAUEBQkFBQkUDQsNFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQ
+      TITLE           : Jamaican In New York (Album Version)`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKey("metadata_block_picture"))
+			md = md.Map(e.CustomMappings())
+			Expect(md).To(HaveKey("has_picture"))
+		})
+
+		It("detects embedded cover art in m4a containers", func() {
+			const output = `
+Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Putumayo Presents_ Euro Groove/01 Destins et Désirs.m4a':
+  Metadata:
+    album           : Putumayo Presents: Euro Groove
+  Duration: 00:05:15.81, start: 0.047889, bitrate: 133 kb/s
+  Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
+    Metadata:
+      creation_time   : 2008-03-11T21:03:23.000000Z
+      vendor_id       : [0][0][0][0]
+  Stream #0:1[0x0]: Video: png, rgb24(pc), 350x350, 90k tbr, 90k tbn (attached pic)
+`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("has_picture", []string{"true"}))
+		})
+
+		It("gets bitrate from the stream, if available", func() {
+			const output = `
+Input #0, mp3, from '/Users/deluan/Music/iTunes/iTunes Media/Music/Compilations/Putumayo Presents Blues Lounge/09 Pablo's Blues.mp3':
+  Duration: 00:00:01.02, start: 0.000000, bitrate: 477 kb/s
+    Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 192 kb/s`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("bitrate", []string{"192"}))
+		})
+
+		It("parses duration with milliseconds", func() {
+			const output = `
+Input #0, mp3, from '/Users/deluan/Music/iTunes/iTunes Media/Music/Compilations/Putumayo Presents Blues Lounge/09 Pablo's Blues.mp3':
+  Duration: 00:05:02.63, start: 0.000000, bitrate: 140 kb/s`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("duration", []string{"302.63"}))
+		})
+
+		It("parse flac bitrates", func() {
+			const output = `
+Input #0, mp3, from '/Users/deluan/Music/iTunes/iTunes Media/Music/Compilations/Putumayo Presents Blues Lounge/09 Pablo's Blues.mp3':
+  Duration: 00:00:01.02, start: 0.000000, bitrate: 477 kb/s
+    Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 192 kb/s`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("channels", []string{"2"}))
+		})
+
+		It("parse channels from the stream with bitrate", func() {
+			const output = `
+Input #0, flac, from '/Users/deluan/Music/Music/Media/__/Crazy For You/01-01 Crazy For You.flac':
+  Metadata:
+    TITLE           : Crazy For You
+  Duration: 00:04:13.00, start: 0.000000, bitrate: 852 kb/s
+  Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
+  Stream #0:1: Video: mjpeg (Progressive), yuvj444p(pc, bt470bg/unknown/unknown), 600x600, 90k tbr, 90k tbn, 90k tbc (attached pic)
+`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("bitrate", []string{"852"}))
+		})
+
+		It("parse 7.1 channels from the stream", func() {
+			const output = `
+Input #0, wav, from '/Users/deluan/Music/Music/Media/_/multichannel/Nums_7dot1_24_48000.wav':
+  Duration: 00:00:09.05, bitrate: 9216 kb/s
+  Stream #0:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 7.1, s32 (24 bit), 9216 kb/s`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("channels", []string{"8"}))
+		})
+
+		It("parse channels from the stream without bitrate", func() {
+			const output = `
+Input #0, flac, from '/Users/deluan/Music/iTunes/iTunes Media/Music/Compilations/Putumayo Presents Blues Lounge/09 Pablo's Blues.flac':
+  Duration: 00:00:01.02, start: 0.000000, bitrate: 1371 kb/s
+    Stream #0:0: Audio: flac, 44100 Hz, stereo, fltp, s32 (24 bit)`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("channels", []string{"2"}))
+		})
+
+		It("parse channels from the stream with lang", func() {
+			const output = `
+Input #0, flac, from '/Users/deluan/Music/iTunes/iTunes Media/Music/Compilations/Putumayo Presents Blues Lounge/09 Pablo's Blues.m4a':
+  Duration: 00:00:01.02, start: 0.000000, bitrate: 1371 kb/s
+    Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 262 kb/s (default)`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("channels", []string{"2"}))
+		})
+
+		It("parse channels from the stream with lang 2", func() {
+			const output = `
+Input #0, flac, from '/Users/deluan/Music/iTunes/iTunes Media/Music/Compilations/Putumayo Presents Blues Lounge/09 Pablo's Blues.m4a':
+  Duration: 00:00:01.02, start: 0.000000, bitrate: 1371 kb/s
+    Stream #0:0(eng): Audio: vorbis, 44100 Hz, stereo, fltp, 192 kb/s`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("channels", []string{"2"}))
+		})
+
+		It("parse sampleRate from the stream", func() {
+			const output = `
+Input #0, dsf, from '/Users/deluan/Downloads/06-04 Perpetual Change.dsf':
+  Duration: 00:14:19.46, start: 0.000000, bitrate: 5644 kb/s
+  Stream #0:0: Audio: dsd_lsbf_planar, 352800 Hz, stereo, fltp, 5644 kb/s`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("samplerate", []string{"352800"}))
+		})
+
+		It("parse sampleRate from the stream", func() {
+			const output = `
+Input #0, wav, from '/Users/deluan/Music/Music/Media/_/multichannel/Nums_7dot1_24_48000.wav':
+  Duration: 00:00:09.05, bitrate: 9216 kb/s
+  Stream #0:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 7.1, s32 (24 bit), 9216 kb/s`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("samplerate", []string{"48000"}))
+		})
+
+		It("parses stream level tags", func() {
+			const output = `
+Input #0, ogg, from './01-02 Drive (Teku).opus':
+  Metadata:
+    ALBUM           : Hot Wheels Acceleracers Soundtrack
+  Duration: 00:03:37.37, start: 0.007500, bitrate: 135 kb/s
+    Stream #0:0(eng): Audio: opus, 48000 Hz, stereo, fltp
+    Metadata:
+      TITLE           : Drive (Teku)`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("title", []string{"Drive (Teku)"}))
+		})
+
+		It("does not overlap top level tags with the stream level tags", func() {
+			const output = `
+Input #0, mp3, from 'groovin.mp3':
+  Metadata:
+    title           : Groovin' (feat. Daniel Sneijers, Susanne Alt)
+  Duration: 00:03:34.28, start: 0.025056, bitrate: 323 kb/s
+    Metadata:
+      title           : garbage`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("title", []string{"Groovin' (feat. Daniel Sneijers, Susanne Alt)", "garbage"}))
+		})
+
+		It("parses multiline tags", func() {
+			const outputWithMultilineComment = `
+Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'modulo.m4a':
+  Metadata:
+    comment         : https://www.mixcloud.com/codigorock/30-minutos-com-saara-saara/
+                    :
+                    : Tracklist:
+                    :
+                    : 01. Saara Saara
+                    : 02. Carta Corrente
+                    : 03. X
+                    : 04. Eclipse Lunar
+                    : 05. Vírus de Sírius
+                    : 06. Doktor Fritz
+                    : 07. Wunderbar
+                    : 08. Quarta Dimensão
+  Duration: 00:26:46.96, start: 0.052971, bitrate: 69 kb/s`
+			const expectedComment = `https://www.mixcloud.com/codigorock/30-minutos-com-saara-saara/
+
+Tracklist:
+
+01. Saara Saara
+02. Carta Corrente
+03. X
+04. Eclipse Lunar
+05. Vírus de Sírius
+06. Doktor Fritz
+07. Wunderbar
+08. Quarta Dimensão`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", outputWithMultilineComment)
+			Expect(md).To(HaveKeyWithValue("comment", []string{expectedComment}))
+		})
+
+		It("parses sort tags correctly", func() {
+			const output = `
+Input #0, mp3, from '/Users/deluan/Downloads/椎名林檎 - 加爾基 精液 栗ノ花 - 2003/02 - ドツペルゲンガー.mp3':
+  Metadata:
+    title-sort      : Dopperugengā
+    album           : 加爾基 精液 栗ノ花
+    artist          : 椎名林檎
+    album_artist    : 椎名林檎
+    title           : ドツペルゲンガー
+    albumsort       : Kalk Samen Kuri No Hana
+    artist_sort     : Shiina, Ringo
+    ALBUMARTISTSORT : Shiina, Ringo
+`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(SatisfyAll(
+				HaveKeyWithValue("title", []string{"ドツペルゲンガー"}),
+				HaveKeyWithValue("album", []string{"加爾基 精液 栗ノ花"}),
+				HaveKeyWithValue("artist", []string{"椎名林檎"}),
+				HaveKeyWithValue("album_artist", []string{"椎名林檎"}),
+				HaveKeyWithValue("title-sort", []string{"Dopperugengā"}),
+				HaveKeyWithValue("albumsort", []string{"Kalk Samen Kuri No Hana"}),
+				HaveKeyWithValue("artist_sort", []string{"Shiina, Ringo"}),
+				HaveKeyWithValue("albumartistsort", []string{"Shiina, Ringo"}),
+			))
+		})
+
+		It("ignores cover comment", func() {
+			const output = `
+Input #0, mp3, from './Edie Brickell/Picture Perfect Morning/01-01 Tomorrow Comes.mp3':
+  Metadata:
+    title           : Tomorrow Comes
+    artist          : Edie Brickell
+  Duration: 00:03:56.12, start: 0.000000, bitrate: 332 kb/s
+    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
+    Stream #0:1: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1200x1200 [SAR 72:72 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
+    Metadata:
+      comment         : Cover (front)`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).ToNot(HaveKey("comment"))
+		})
+
+		It("parses tags with spaces in the name", func() {
+			const output = `
+Input #0, mp3, from '/Users/deluan/Music/Music/Media/_/Wyclef Jean - From the Hut, to the Projects, to the Mansion/10 - The Struggle (interlude).mp3':
+  Metadata:
+    ALBUM ARTIST    : Wyclef Jean
+`
+			md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+			Expect(md).To(HaveKeyWithValue("album artist", []string{"Wyclef Jean"}))
+		})
+	})
+
+	It("parses an integer TBPM tag", func() {
+		const output = `
+		Input #0, mp3, from 'tests/fixtures/test.mp3':
+		  Metadata:
+		    TBPM            : 123`
+		md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+		Expect(md).To(HaveKeyWithValue("tbpm", []string{"123"}))
+	})
+
+	It("parses and rounds a floating point fBPM tag", func() {
+		const output = `
+		Input #0, ogg, from 'tests/fixtures/test.ogg':
+  		  Metadata:
+	        FBPM            : 141.7`
+		md, _ := e.extractMetadata("tests/fixtures/test.ogg", output)
+		Expect(md).To(HaveKeyWithValue("fbpm", []string{"141.7"}))
+	})
+
+	It("parses replaygain data correctly", func() {
+		const output = `
+		Input #0, mp3, from 'test.mp3':
+			Metadata:
+				REPLAYGAIN_ALBUM_PEAK: 0.9125
+				REPLAYGAIN_TRACK_PEAK: 0.4512
+				REPLAYGAIN_TRACK_GAIN: -1.48 dB
+				REPLAYGAIN_ALBUM_GAIN: +3.21518 dB
+				Side data:
+					replaygain: track gain - -1.480000, track peak - 0.000011, album gain - 3.215180, album peak - 0.000021, 
+		`
+		md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+		Expect(md).To(SatisfyAll(
+			HaveKeyWithValue("replaygain_track_gain", []string{"-1.48 dB"}),
+			HaveKeyWithValue("replaygain_track_peak", []string{"0.4512"}),
+			HaveKeyWithValue("replaygain_album_gain", []string{"+3.21518 dB"}),
+			HaveKeyWithValue("replaygain_album_peak", []string{"0.9125"}),
+		))
+	})
+
+	It("parses lyrics with language code", func() {
+		const output = `
+		Input #0, mp3, from 'test.mp3':
+  		Metadata:
+				lyrics-eng      : [00:00.00]This is
+												: [00:02.50]English
+				lyrics-xxx      : [00:00.00]This is
+												: [00:02.50]unspecified
+		`
+		md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+		Expect(md).To(SatisfyAll(
+			HaveKeyWithValue("lyrics-eng", []string{
+				"[00:00.00]This is\n[00:02.50]English",
+			}),
+			HaveKeyWithValue("lyrics-xxx", []string{
+				"[00:00.00]This is\n[00:02.50]unspecified",
+			}),
+		))
+	})
+
+	It("parses normal LYRICS tag", func() {
+		const output = `
+		Input #0, mp3, from 'test.mp3':
+  		Metadata:
+				LYRICS      : [00:00.00]This is
+										: [00:02.50]English
+		`
+		md, _ := e.extractMetadata("tests/fixtures/test.mp3", output)
+		Expect(md).To(HaveKeyWithValue("lyrics", []string{
+			"[00:00.00]This is\n[00:02.50]English",
+		}))
+	})
+})
--- a/scanner/metadata_old/metadata.go
+++ b/scanner/metadata_old/metadata.go
@@ -0,0 +1,408 @@
+package metadata_old
+
+import (
+	"encoding/json"
+	"fmt"
+	"math"
+	"os"
+	"path"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/djherbis/times"
+	"github.com/google/uuid"
+	"github.com/navidrome/navidrome/conf"
+	"github.com/navidrome/navidrome/consts"
+	"github.com/navidrome/navidrome/log"
+	"github.com/navidrome/navidrome/model"
+)
+
+type Extractor interface {
+	Parse(files ...string) (map[string]ParsedTags, error)
+	CustomMappings() ParsedTags
+	Version() string
+}
+
+var extractors = map[string]Extractor{}
+
+func RegisterExtractor(id string, parser Extractor) {
+	extractors[id] = parser
+}
+
+func LogExtractors() {
+	for id, p := range extractors {
+		log.Debug("Registered metadata extractor", "id", id, "version", p.Version())
+	}
+}
+
+func Extract(files ...string) (map[string]Tags, error) {
+	p, ok := extractors[conf.Server.Scanner.Extractor]
+	if !ok {
+		log.Warn("Invalid 'Scanner.Extractor' option. Using default", "requested", conf.Server.Scanner.Extractor,
+			"validOptions", "ffmpeg,taglib", "default", consts.DefaultScannerExtractor)
+		p = extractors[consts.DefaultScannerExtractor]
+	}
+
+	extractedTags, err := p.Parse(files...)
+	if err != nil {
+		return nil, err
+	}
+
+	result := map[string]Tags{}
+	for filePath, tags := range extractedTags {
+		fileInfo, err := os.Stat(filePath)
+		if err != nil {
+			log.Warn("Error stating file. Skipping", "filePath", filePath, err)
+			continue
+		}
+
+		tags = tags.Map(p.CustomMappings())
+		result[filePath] = NewTag(filePath, fileInfo, tags)
+	}
+
+	return result, nil
+}
+
+func NewTag(filePath string, fileInfo os.FileInfo, tags ParsedTags) Tags {
+	for t, values := range tags {
+		values = removeDuplicatesAndEmpty(values)
+		if len(values) == 0 {
+			delete(tags, t)
+			continue
+		}
+		tags[t] = values
+	}
+	return Tags{
+		filePath: filePath,
+		fileInfo: fileInfo,
+		Tags:     tags,
+	}
+}
+
+func removeDuplicatesAndEmpty(values []string) []string {
+	encountered := map[string]struct{}{}
+	empty := true
+	result := make([]string, 0, len(values))
+	for _, v := range values {
+		if _, ok := encountered[v]; ok {
+			continue
+		}
+		encountered[v] = struct{}{}
+		empty = empty && v == ""
+		result = append(result, v)
+	}
+	if empty {
+		return nil
+	}
+	return result
+}
+
+type ParsedTags map[string][]string
+
+func (p ParsedTags) Map(customMappings ParsedTags) ParsedTags {
+	if customMappings == nil {
+		return p
+	}
+	for tagName, alternatives := range customMappings {
+		for _, altName := range alternatives {
+			if altValue, ok := p[altName]; ok {
+				p[tagName] = append(p[tagName], altValue...)
+				delete(p, altName)
+			}
+		}
+	}
+	return p
+}
+
+type Tags struct {
+	filePath string
+	fileInfo os.FileInfo
+	Tags     ParsedTags
+}
+
+// Common tags
+
+func (t Tags) Title() string  { return t.getFirstTagValue("title", "sort_name", "titlesort") }
+func (t Tags) Album() string  { return t.getFirstTagValue("album", "sort_album", "albumsort") }
+func (t Tags) Artist() string { return t.getFirstTagValue("artist", "sort_artist", "artistsort") }
+func (t Tags) AlbumArtist() string {
+	return t.getFirstTagValue("album_artist", "album artist", "albumartist")
+}
+func (t Tags) SortTitle() string           { return t.getSortTag("tsot", "title", "name") }
+func (t Tags) SortAlbum() string           { return t.getSortTag("tsoa", "album") }
+func (t Tags) SortArtist() string          { return t.getSortTag("tsop", "artist") }
+func (t Tags) SortAlbumArtist() string     { return t.getSortTag("tso2", "albumartist", "album_artist") }
+func (t Tags) Genres() []string            { return t.getAllTagValues("genre") }
+func (t Tags) Date() (int, string)         { return t.getDate("date") }
+func (t Tags) OriginalDate() (int, string) { return t.getDate("originaldate") }
+func (t Tags) ReleaseDate() (int, string)  { return t.getDate("releasedate") }
+func (t Tags) Comment() string             { return t.getFirstTagValue("comment") }
+func (t Tags) Compilation() bool           { return t.getBool("tcmp", "compilation", "wm/iscompilation") }
+func (t Tags) TrackNumber() (int, int)     { return t.getTuple("track", "tracknumber") }
+func (t Tags) DiscNumber() (int, int)      { return t.getTuple("disc", "discnumber") }
+func (t Tags) DiscSubtitle() string {
+	return t.getFirstTagValue("tsst", "discsubtitle", "setsubtitle")
+}
+func (t Tags) CatalogNum() string { return t.getFirstTagValue("catalognumber") }
+func (t Tags) Bpm() int           { return (int)(math.Round(t.getFloat("tbpm", "bpm", "fbpm"))) }
+func (t Tags) HasPicture() bool   { return t.getFirstTagValue("has_picture") != "" }
+
+// MusicBrainz Identifiers
+
+func (t Tags) MbzReleaseTrackID() string {
+	return t.getMbzID("musicbrainz_releasetrackid", "musicbrainz release track id")
+}
+
+func (t Tags) MbzRecordingID() string {
+	return t.getMbzID("musicbrainz_trackid", "musicbrainz track id")
+}
+func (t Tags) MbzAlbumID() string { return t.getMbzID("musicbrainz_albumid", "musicbrainz album id") }
+func (t Tags) MbzArtistID() string {
+	return t.getMbzID("musicbrainz_artistid", "musicbrainz artist id")
+}
+func (t Tags) MbzAlbumArtistID() string {
+	return t.getMbzID("musicbrainz_albumartistid", "musicbrainz album artist id")
+}
+func (t Tags) MbzAlbumType() string {
+	return t.getFirstTagValue("musicbrainz_albumtype", "musicbrainz album type")
+}
+func (t Tags) MbzAlbumComment() string {
+	return t.getFirstTagValue("musicbrainz_albumcomment", "musicbrainz album comment")
+}
+
+// Gain Properties
+
+func (t Tags) RGAlbumGain() float64 {
+	return t.getGainValue("replaygain_album_gain", "r128_album_gain")
+}
+func (t Tags) RGAlbumPeak() float64 { return t.getPeakValue("replaygain_album_peak") }
+func (t Tags) RGTrackGain() float64 {
+	return t.getGainValue("replaygain_track_gain", "r128_track_gain")
+}
+func (t Tags) RGTrackPeak() float64 { return t.getPeakValue("replaygain_track_peak") }
+
+// File properties
+
+func (t Tags) Duration() float32           { return float32(t.getFloat("duration")) }
+func (t Tags) SampleRate() int             { return t.getInt("samplerate") }
+func (t Tags) BitRate() int                { return t.getInt("bitrate") }
+func (t Tags) Channels() int               { return t.getInt("channels") }
+func (t Tags) ModificationTime() time.Time { return t.fileInfo.ModTime() }
+func (t Tags) Size() int64                 { return t.fileInfo.Size() }
+func (t Tags) FilePath() string            { return t.filePath }
+func (t Tags) Suffix() string              { return strings.ToLower(strings.TrimPrefix(path.Ext(t.filePath), ".")) }
+func (t Tags) BirthTime() time.Time {
+	if ts := times.Get(t.fileInfo); ts.HasBirthTime() {
+		return ts.BirthTime()
+	}
+	return time.Now()
+}
+
+func (t Tags) Lyrics() string {
+	lyricList := model.LyricList{}
+	basicLyrics := t.getAllTagValues("lyrics", "unsynced_lyrics", "unsynced lyrics", "unsyncedlyrics")
+
+	for _, value := range basicLyrics {
+		lyrics, err := model.ToLyrics("xxx", value)
+		if err != nil {
+			log.Warn("Unexpected failure occurred when parsing lyrics", "file", t.filePath, "error", err)
+			continue
+		}
+
+		lyricList = append(lyricList, *lyrics)
+	}
+
+	for tag, value := range t.Tags {
+		if strings.HasPrefix(tag, "lyrics-") {
+			language := strings.TrimSpace(strings.TrimPrefix(tag, "lyrics-"))
+
+			if language == "" {
+				language = "xxx"
+			}
+
+			for _, text := range value {
+				lyrics, err := model.ToLyrics(language, text)
+				if err != nil {
+					log.Warn("Unexpected failure occurred when parsing lyrics", "file", t.filePath, "error", err)
+					continue
+				}
+
+				lyricList = append(lyricList, *lyrics)
+			}
+		}
+	}
+
+	res, err := json.Marshal(lyricList)
+	if err != nil {
+		log.Warn("Unexpected error occurred when serializing lyrics", "file", t.filePath, "error", err)
+		return ""
+	}
+	return string(res)
+}
+
+func (t Tags) getGainValue(rgTagName, r128TagName string) float64 {
+	// Check for ReplayGain first
+	// ReplayGain is in the form [-]a.bb dB and normalized to -18dB
+	var tag = t.getFirstTagValue(rgTagName)
+	if tag != "" {
+		tag = strings.TrimSpace(strings.Replace(tag, "dB", "", 1))
+		var value, err = strconv.ParseFloat(tag, 64)
+		if err != nil || value == math.Inf(-1) || value == math.Inf(1) {
+			return 0
+		}
+		return value
+	}
+
+	// If ReplayGain is not found, check for R128 gain
+	// R128 gain is a Q7.8 fixed point number normalized to -23dB
+	tag = t.getFirstTagValue(r128TagName)
+	if tag != "" {
+		var iValue, err = strconv.Atoi(tag)
+		if err != nil {
+			return 0
+		}
+		// Convert Q7.8 to float
+		var value = float64(iValue) / 256.0
+		// Adding 5 dB to normalize with ReplayGain level
+		return value + 5
+	}
+
+	return 0
+}
+
+func (t Tags) getPeakValue(tagName string) float64 {
+	var tag = t.getFirstTagValue(tagName)
+	var value, err = strconv.ParseFloat(tag, 64)
+	if err != nil || value == math.Inf(-1) || value == math.Inf(1) {
+		// A default of 1 for peak value results in no changes
+		return 1
+	}
+	return value
+}
+
+func (t Tags) getTags(tagNames ...string) []string {
+	for _, tag := range tagNames {
+		if v, ok := t.Tags[tag]; ok {
+			return v
+		}
+	}
+	return nil
+}
+
+func (t Tags) getFirstTagValue(tagNames ...string) string {
+	ts := t.getTags(tagNames...)
+	if len(ts) > 0 {
+		return ts[0]
+	}
+	return ""
+}
+
+func (t Tags) getAllTagValues(tagNames ...string) []string {
+	values := make([]string, 0, len(tagNames)*2)
+	for _, tag := range tagNames {
+		if v, ok := t.Tags[tag]; ok {
+			values = append(values, v...)
+		}
+	}
+	return values
+}
+
+func (t Tags) getSortTag(originalTag string, tagNames ...string) string {
+	formats := []string{"sort%s", "sort_%s", "sort-%s", "%ssort", "%s_sort", "%s-sort"}
+	all := make([]string, 1, len(tagNames)*len(formats)+1)
+	all[0] = originalTag
+	for _, tag := range tagNames {
+		for _, format := range formats {
+			name := fmt.Sprintf(format, tag)
+			all = append(all, name)
+		}
+	}
+	return t.getFirstTagValue(all...)
+}
+
+var dateRegex = regexp.MustCompile(`([12]\d\d\d)`)
+
+func (t Tags) getDate(tagNames ...string) (int, string) {
+	tag := t.getFirstTagValue(tagNames...)
+	if len(tag) < 4 {
+		return 0, ""
+	}
+	// first get just the year
+	match := dateRegex.FindStringSubmatch(tag)
+	if len(match) == 0 {
+		log.Warn("Error parsing "+tagNames[0]+" field for year", "file", t.filePath, "date", tag)
+		return 0, ""
+	}
+	year, _ := strconv.Atoi(match[1])
+
+	if len(tag) < 5 {
+		return year, match[1]
+	}
+
+	//then try YYYY-MM-DD
+	if len(tag) > 10 {
+		tag = tag[:10]
+	}
+	layout := "2006-01-02"
+	_, err := time.Parse(layout, tag)
+	if err != nil {
+		layout = "2006-01"
+		_, err = time.Parse(layout, tag)
+		if err != nil {
+			log.Warn("Error parsing "+tagNames[0]+" field for month + day", "file", t.filePath, "date", tag)
+			return year, match[1]
+		}
+	}
+	return year, tag
+}
+
+func (t Tags) getBool(tagNames ...string) bool {
+	tag := t.getFirstTagValue(tagNames...)
+	if tag == "" {
+		return false
+	}
+	i, _ := strconv.Atoi(strings.TrimSpace(tag))
+	return i == 1
+}
+
+func (t Tags) getTuple(tagNames ...string) (int, int) {
+	tag := t.getFirstTagValue(tagNames...)
+	if tag == "" {
+		return 0, 0
+	}
+	tuple := strings.Split(tag, "/")
+	t1, t2 := 0, 0
+	t1, _ = strconv.Atoi(tuple[0])
+	if len(tuple) > 1 {
+		t2, _ = strconv.Atoi(tuple[1])
+	} else {
+		t2tag := t.getFirstTagValue(tagNames[0] + "total")
+		t2, _ = strconv.Atoi(t2tag)
+	}
+	return t1, t2
+}
+
+func (t Tags) getMbzID(tagNames ...string) string {
+	tag := t.getFirstTagValue(tagNames...)
+	if _, err := uuid.Parse(tag); err != nil {
+		return ""
+	}
+	return tag
+}
+
+func (t Tags) getInt(tagNames ...string) int {
+	tag := t.getFirstTagValue(tagNames...)
+	i, _ := strconv.Atoi(tag)
+	return i
+}
+
+func (t Tags) getFloat(tagNames ...string) float64 {
+	var tag = t.getFirstTagValue(tagNames...)
+	var value, err = strconv.ParseFloat(tag, 64)
+	if err != nil {
+		return 0
+	}
+	return value
+}
--- a/scanner/metadata_old/metadata_internal_test.go
+++ b/scanner/metadata_old/metadata_internal_test.go
@@ -0,0 +1,144 @@
+package metadata_old
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Tags", func() {
+	DescribeTable("getDate",
+		func(tag string, expectedYear int, expectedDate string) {
+			md := &Tags{}
+			md.Tags = map[string][]string{"date": {tag}}
+			testYear, testDate := md.Date()
+			Expect(testYear).To(Equal(expectedYear))
+			Expect(testDate).To(Equal(expectedDate))
+		},
+		Entry(nil, "1985", 1985, "1985"),
+		Entry(nil, "2002-01", 2002, "2002-01"),
+		Entry(nil, "1969.06", 1969, "1969"),
+		Entry(nil, "1980.07.25", 1980, "1980"),
+		Entry(nil, "2004-00-00", 2004, "2004"),
+		Entry(nil, "2016-12-31", 2016, "2016-12-31"),
+		Entry(nil, "2013-May-12", 2013, "2013"),
+		Entry(nil, "May 12, 2016", 2016, "2016"),
+		Entry(nil, "01/10/1990", 1990, "1990"),
+		Entry(nil, "invalid", 0, ""),
+	)
+
+	Describe("getMbzID", func() {
+		It("return a valid MBID", func() {
+			md := &Tags{}
+			md.Tags = map[string][]string{
+				"musicbrainz_trackid":        {"8f84da07-09a0-477b-b216-cc982dabcde1"},
+				"musicbrainz_releasetrackid": {"6caf16d3-0b20-3fe6-8020-52e31831bc11"},
+				"musicbrainz_albumid":        {"f68c985d-f18b-4f4a-b7f0-87837cf3fbf9"},
+				"musicbrainz_artistid":       {"89ad4ac3-39f7-470e-963a-56509c546377"},
+				"musicbrainz_albumartistid":  {"ada7a83c-e3e1-40f1-93f9-3e73dbc9298a"},
+			}
+			Expect(md.MbzRecordingID()).To(Equal("8f84da07-09a0-477b-b216-cc982dabcde1"))
+			Expect(md.MbzReleaseTrackID()).To(Equal("6caf16d3-0b20-3fe6-8020-52e31831bc11"))
+			Expect(md.MbzAlbumID()).To(Equal("f68c985d-f18b-4f4a-b7f0-87837cf3fbf9"))
+			Expect(md.MbzArtistID()).To(Equal("89ad4ac3-39f7-470e-963a-56509c546377"))
+			Expect(md.MbzAlbumArtistID()).To(Equal("ada7a83c-e3e1-40f1-93f9-3e73dbc9298a"))
+		})
+		It("return empty string for invalid MBID", func() {
+			md := &Tags{}
+			md.Tags = map[string][]string{
+				"musicbrainz_trackid":       {"11406732-6"},
+				"musicbrainz_albumid":       {"11406732"},
+				"musicbrainz_artistid":      {"200455"},
+				"musicbrainz_albumartistid": {"194"},
+			}
+			Expect(md.MbzRecordingID()).To(Equal(""))
+			Expect(md.MbzAlbumID()).To(Equal(""))
+			Expect(md.MbzArtistID()).To(Equal(""))
+			Expect(md.MbzAlbumArtistID()).To(Equal(""))
+		})
+	})
+
+	Describe("getAllTagValues", func() {
+		It("returns values from all tag names", func() {
+			md := &Tags{}
+			md.Tags = map[string][]string{
+				"genre": {"Rock", "Pop", "New Wave"},
+			}
+
+			Expect(md.Genres()).To(ConsistOf("Rock", "Pop", "New Wave"))
+		})
+	})
+
+	Describe("removeDuplicatesAndEmpty", func() {
+		It("removes duplicates", func() {
+			md := NewTag("/music/artist/album01/Song.mp3", nil, ParsedTags{
+				"genre": []string{"pop", "rock", "pop"},
+				"date":  []string{"2023-03-01", "2023-03-01"},
+				"mood":  []string{"happy", "sad"},
+			})
+			Expect(md.Tags).To(HaveKeyWithValue("genre", []string{"pop", "rock"}))
+			Expect(md.Tags).To(HaveKeyWithValue("date", []string{"2023-03-01"}))
+			Expect(md.Tags).To(HaveKeyWithValue("mood", []string{"happy", "sad"}))
+		})
+		It("removes empty tags", func() {
+			md := NewTag("/music/artist/album01/Song.mp3", nil, ParsedTags{
+				"genre": []string{"pop", "rock", "pop"},
+				"mood":  []string{"", ""},
+			})
+			Expect(md.Tags).To(HaveKeyWithValue("genre", []string{"pop", "rock"}))
+			Expect(md.Tags).ToNot(HaveKey("mood"))
+		})
+	})
+
+	Describe("BPM", func() {
+		var t *Tags
+		BeforeEach(func() {
+			t = &Tags{Tags: map[string][]string{
+				"fbpm": []string{"141.7"},
+			}}
+		})
+
+		It("rounds a floating point fBPM tag", func() {
+			Expect(t.Bpm()).To(Equal(142))
+		})
+	})
+
+	Describe("ReplayGain", func() {
+		DescribeTable("getGainValue",
+			func(tag string, expected float64) {
+				md := &Tags{}
+				md.Tags = map[string][]string{"replaygain_track_gain": {tag}}
+				Expect(md.RGTrackGain()).To(Equal(expected))
+
+			},
+			Entry("0", "0", 0.0),
+			Entry("1.2dB", "1.2dB", 1.2),
+			Entry("Infinity", "Infinity", 0.0),
+			Entry("Invalid value", "INVALID VALUE", 0.0),
+		)
+		DescribeTable("getPeakValue",
+			func(tag string, expected float64) {
+				md := &Tags{}
+				md.Tags = map[string][]string{"replaygain_track_peak": {tag}}
+				Expect(md.RGTrackPeak()).To(Equal(expected))
+
+			},
+			Entry("0", "0", 0.0),
+			Entry("0.5", "0.5", 0.5),
+			Entry("Invalid dB suffix", "0.7dB", 1.0),
+			Entry("Infinity", "Infinity", 1.0),
+			Entry("Invalid value", "INVALID VALUE", 1.0),
+		)
+		DescribeTable("getR128GainValue",
+			func(tag string, expected float64) {
+				md := &Tags{}
+				md.Tags = map[string][]string{"r128_track_gain": {tag}}
+				Expect(md.RGTrackGain()).To(Equal(expected))
+
+			},
+			Entry("0", "0", 5.0),
+			Entry("-3776", "-3776", -9.75),
+			Entry("Infinity", "Infinity", 0.0),
+			Entry("Invalid value", "INVALID VALUE", 0.0),
+		)
+	})
+})
--- a/scanner/metadata_old/metadata_suite_test.go
+++ b/scanner/metadata_old/metadata_suite_test.go
@@ -0,0 +1,17 @@
+package metadata_old
+
+import (
+	"testing"
+
+	"github.com/navidrome/navidrome/log"
+	"github.com/navidrome/navidrome/tests"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestMetadata(t *testing.T) {
+	tests.Init(t, true)
+	log.SetLevel(log.LevelFatal)
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Metadata Suite")
+}
--- a/scanner/metadata_old/metadata_test.go
+++ b/scanner/metadata_old/metadata_test.go
@@ -0,0 +1,95 @@
+package metadata_old_test
+
+import (
+	"cmp"
+	"encoding/json"
+	"slices"
+
+	"github.com/navidrome/navidrome/conf"
+	"github.com/navidrome/navidrome/conf/configtest"
+	"github.com/navidrome/navidrome/core/ffmpeg"
+	"github.com/navidrome/navidrome/model"
+	"github.com/navidrome/navidrome/scanner/metadata_old"
+	_ "github.com/navidrome/navidrome/scanner/metadata_old/ffmpeg"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Tags", func() {
+	var zero int64 = 0
+	var secondTs int64 = 2500
+
+	makeLyrics := func(synced bool, lang, secondLine string) model.Lyrics {
+		lines := []model.Line{
+			{Value: "This is"},
+			{Value: secondLine},
+		}
+
+		if synced {
+			lines[0].Start = &zero
+			lines[1].Start = &secondTs
+		}
+
+		lyrics := model.Lyrics{
+			Lang:   lang,
+			Line:   lines,
+			Synced: synced,
+		}
+
+		return lyrics
+	}
+
+	sortLyrics := func(lines model.LyricList) model.LyricList {
+		slices.SortFunc(lines, func(a, b model.Lyrics) int {
+			langDiff := cmp.Compare(a.Lang, b.Lang)
+			if langDiff != 0 {
+				return langDiff
+			}
+			return cmp.Compare(a.Line[1].Value, b.Line[1].Value)
+		})
+
+		return lines
+	}
+
+	compareLyrics := func(m metadata_old.Tags, expected model.LyricList) {
+		lyrics := model.LyricList{}
+		Expect(json.Unmarshal([]byte(m.Lyrics()), &lyrics)).To(BeNil())
+		Expect(sortLyrics(lyrics)).To(Equal(sortLyrics(expected)))
+	}
+
+	// Only run these tests if FFmpeg is available
+	FFmpegContext := XContext
+	if ffmpeg.New().IsAvailable() {
+		FFmpegContext = Context
+	}
+	FFmpegContext("Extract with FFmpeg", func() {
+		BeforeEach(func() {
+			DeferCleanup(configtest.SetupConfig())
+			conf.Server.Scanner.Extractor = "ffmpeg"
+		})
+
+		DescribeTable("Lyrics test",
+			func(file string) {
+				path := "tests/fixtures/" + file
+				mds, err := metadata_old.Extract(path)
+				Expect(err).ToNot(HaveOccurred())
+				Expect(mds).To(HaveLen(1))
+
+				m := mds[path]
+				compareLyrics(m, model.LyricList{
+					makeLyrics(true, "eng", "English"),
+					makeLyrics(true, "xxx", "unspecified"),
+				})
+			},
+
+			Entry("Parses AIFF file", "test.aiff"),
+			Entry("Parses MP3 files", "test.mp3"),
+			// Disabled, because it fails in pipeline
+			// Entry("Parses WAV files", "test.wav"),
+
+			// FFMPEG behaves very weirdly for multivalued tags for non-ID3
+			// Specifically, they are separated by ";, which is indistinguishable
+			// from other fields
+		)
+	})
+})