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Deluan Quintão 27209ed26a
fix(transcoding): clamp target channels to codec limit (#5336) (#5345)
* fix(transcoding): clamp target channels to codec limit (#5336)

When transcoding a multi-channel source (e.g. 6-channel FLAC) to MP3, the
decider passed the source channel count through to ffmpeg unchanged. The
default MP3 command path then emitted `-ac 6`, and the template path injected
`-ac 6` after the template's own `-ac 2`, causing ffmpeg to honor the last
occurrence and fail with exit code 234 since libmp3lame only supports up to
2 channels.

Introduce `codecMaxChannels()` in core/stream/codec.go (mp3→2, opus→8),
mirroring the existing `codecMaxSampleRate` pattern, and apply the clamp in
`computeTranscodedStream` right after the sample-rate clamps. Also fix a
pre-existing ordering bug where the profile's MaxAudioChannels check compared
against src.Channels rather than ts.Channels, which would have let a looser
profile setting raise the codec-clamped value back up. Comparing against the
already-clamped ts.Channels makes profile limits strictly narrowing, which
matches how the sample-rate block already behaves.

The ffmpeg buildTemplateArgs comment is refreshed to point at the new upstream
clamp, since the flags it injects are now always codec-safe.

Adds unit tests for codecMaxChannels and four decider scenarios covering the
literal issue repro (6-ch FLAC→MP3 clamps to 2), a stricter profile limit
winning over the codec clamp, a looser profile limit leaving the codec clamp
intact, and a codec with no hard limit (AAC) passing 6 channels through.

* test(e2e): pin codec channel clamp at the Subsonic API surface (#5336)

Add a 6-channel FLAC fixture to the e2e test suite and use it to assert the
codec channel clamp end-to-end on both Subsonic streaming endpoints:

- getTranscodeDecision (mp3OnlyClient, no MaxAudioChannels in profile):
  expects TranscodeStream.AudioChannels == 2 for the 6-channel source. This
  exercises the new codecMaxChannels() helper through the OpenSubsonic
  decision endpoint, with no profile-level channel limit masking the bug.

- /rest/stream (legacy): requests format=mp3 against the multichannel
  fixture and asserts streamerSpy.LastRequest.Channels == 2, confirming
  the clamp propagates through ResolveRequest into the stream.Request that
  the streamer receives.

The fixture is metadata-only (channels: 6 plumbed via the existing
storagetest.File helper) — no real audio bytes required, since the e2e
suite uses a spy streamer rather than invoking ffmpeg. Bumps the empty-query
search3 song count expectation from 13 to 14 to account for the new fixture.

* test(decider): clarify codec-clamp comment terminology

Distinguish "transcoding profile MaxAudioChannels" (Profile.MaxAudioChannels
field) from "LimitationAudioChannels" (CodecProfile rule constant). The
regression test bypasses the former, not the latter.
2026-04-11 23:15:07 -04:00
.devcontainer feat(scanner): upgrade TagLib to 2.2, with MKA/Matroska support (#5071) 2026-02-21 16:52:48 -05:00
.github chore(deps): bump nick-fields/retry from 3 to 4 in /.github/workflows (#5241) 2026-03-23 14:19:16 -04:00
adapters fix(scanner): map ORIGYEAR tag for VorbisComment and MP4 formats 2026-04-06 21:35:22 -04:00
cmd fix(server): require additional variable to enable systemd logging (#5222) 2026-03-23 18:09:59 -04:00
conf fix(artwork): address WebP performance regression on low-power hardware (#5286) 2026-04-04 15:17:01 -04:00
consts fix(artwork): address WebP performance regression on low-power hardware (#5286) 2026-04-04 15:17:01 -04:00
contrib build: add packages for deb and rpm to release (#3202) 2024-10-26 13:31:45 -04:00
core fix(transcoding): clamp target channels to codec limit (#5336) (#5345) 2026-04-11 23:15:07 -04:00
db fix(backup): surface real SQLite error when backup step fails 2026-04-11 21:14:52 -04:00
git feat(plugins): experimental support for plugins (#3998) 2025-06-22 20:45:38 -04:00
log feat(server): add syslog priority prefixes for systemd-journald (#5192) 2026-03-15 14:14:05 -04:00
model perf: reduce hot-path heap escapes from value-param pointer aliasing (#5342) 2026-04-10 21:59:49 -04:00
persistence fix(subsonic): always emit required created field on AlbumID3 (#5340) 2026-04-10 19:29:20 -04:00
plugins fix(plugins): fix race between KVStore cleanup goroutine and Close (navidrome/apple-music-plugin#7) 2026-04-06 22:31:30 -04:00
release fix(transcoding): include ffprobe in MSI and fall back gracefully when absent (#5326) 2026-04-07 20:11:38 -04:00
resources fix(ui): update Chinese (Simplified) translation (#5323) 2026-04-07 11:11:05 -04:00
scanner feat: add artist image uploads and image-folder artwork source (#5198) 2026-03-15 22:19:55 -04:00
scheduler test: increase FlakeAttempts for library directory tests and remove flaky job test 2026-03-23 11:59:11 -04:00
scripts build(worktree): add script for setting up git worktrees 2026-03-17 21:34:00 -04:00
server fix(transcoding): clamp target channels to codec limit (#5336) (#5345) 2026-04-11 23:15:07 -04:00
tests fix(transcoding): include ffprobe in MSI and fall back gracefully when absent (#5326) 2026-04-07 20:11:38 -04:00
ui fix(ui): refine image filters for playing and paused states in SquiddiesGlass 2026-04-08 13:13:56 -04:00
utils refactor(shellquote): replace go-shellquote with custom shell quoting implementation 2026-03-14 10:23:45 -04:00
.dockerignore fix: add music.old to .dockerignore and .gitignore 2026-02-06 07:40:05 -05:00
.git-blame-ignore-revs Move project to Navidrome GitHub organization 2021-02-06 21:47:19 -05:00
.gitignore build(worktree): add script for setting up git worktrees 2026-03-17 21:34:00 -04:00
.golangci.yml chore(ui): regenerate package-lock.json to have integrity fields (#5276) 2026-04-05 11:37:50 -04:00
.nvmrc chore(deps): update all dependencies (#4618) 2025-10-25 17:05:16 -04:00
CODE_OF_CONDUCT.md Use Contributor Covenant v2.0 2020-07-21 14:40:21 -04:00
CONTRIBUTING.md docs: update commit message format in CONTRIBUTING.md 2026-02-20 11:00:34 -05:00
Dockerfile feat(server): implement FTS5-based full-text search (#5079) 2026-02-21 17:52:42 -05:00
go.mod fix(gotaglib): update go-taglib to fix issue with empty id3v2 frames 2026-04-07 15:30:21 -04:00
go.sum fix(gotaglib): update go-taglib to fix issue with empty id3v2 frames 2026-04-07 15:30:21 -04:00
LICENSE Change license to GPLv3 2020-01-22 14:48:38 -05:00
main.go feat(server): implement FTS5-based full-text search (#5079) 2026-02-21 17:52:42 -05:00
Makefile fix(artwork): address WebP performance regression on low-power hardware (#5286) 2026-04-04 15:17:01 -04:00
Procfile.dev chore(deps): upgrade to Go 1.24.1 (#3851) 2025-03-17 21:08:10 -04:00
README.md feat: add Navidrome Guru on Gurubase.io (#3491) 2024-11-23 17:29:00 -05:00
reflex.conf feat(server): implement FTS5-based full-text search (#5079) 2026-02-21 17:52:42 -05:00

Navidrome logo

Navidrome Music Server  Tweet

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Navidrome is an open source web-based music collection server and streamer. It gives you freedom to listen to your music collection from any browser or mobile device. It's like your personal Spotify!

Note: The master branch may be in an unstable or even broken state during development. Please use releases instead of the master branch in order to get a stable set of binaries.

Check out our Live Demo!

Any feedback is welcome! If you need/want a new feature, find a bug or think of any way to improve Navidrome, please file a GitHub issue or join the discussion in our Subreddit. If you want to contribute to the project in any other way (ui/backend dev, translations, themes), please join the chat in our Discord server.

Installation

See instructions on the project's website

Cloud Hosting

PikaPods has partnered with us to offer you an officially supported, cloud-hosted solution. A share of the revenue helps fund the development of Navidrome at no additional cost for you.

PikaPods

Features

  • Handles very large music collections
  • Streams virtually any audio format available
  • Reads and uses all your beautifully curated metadata
  • Great support for compilations (Various Artists albums) and box sets (multi-disc albums)
  • Multi-user, each user has their own play counts, playlists, favourites, etc...
  • Very low resource usage
  • Multi-platform, runs on macOS, Linux and Windows. Docker images are also provided
  • Ready to use binaries for all major platforms, including Raspberry Pi
  • Automatically monitors your library for changes, importing new files and reloading new metadata
  • Themeable, modern and responsive Web interface based on Material UI
  • Compatible with all Subsonic/Madsonic/Airsonic clients
  • Transcoding on the fly. Can be set per user/player. Opus encoding is supported
  • Translated to various languages

Translations

Navidrome uses POEditor for translations, and we are always looking for more contributors

Documentation

All documentation can be found in the project's website: https://www.navidrome.org/docs. Here are some useful direct links:

Screenshots