Certain FLACs won't play

Support
1

App version

Production

Issue description

Certain FLACs won’t play, but others do, I Uploaded several logs via app (1st time reporting an issue).

Im using Navidrome on my NAS and the Subsonic implementation on Symphonium

Device type

Phone

Media provider

Navidrome

Steps to reproduce

Play the FLAC in question,
“A lot of errors, playing stopped”

I searched existing issues first

on

I understand that logs are mandatory

on

Log upload name / description

Pomelo

2

Your files are probably invalid or Navidrome have an issue accessing them.

2026-07-19 12:28:46.439 Verbose SubsonicLogger  <-- [288] {"subsonic-response":{"status":"failed","version":"1.16.1","type":"navidrome","serverVersion":"0.63.2 (be10f89c)","openSubsonic":true,"error":{"code":0,"message":"failed to make transcode decision"}}}

2026-07-19 12:28:46.489 Error MediaMetadataService  FFProbe[Playback/TranscodePlanner] [32ms]: Error Failed - -1094995529: Invalid data found when processing input

@deluan Does the server logs more reason when this happen ? Or do you think you can enrich that error message with details ?

3

I stumbled across the solution, it was browsing through a folder that didn’t exist (MusicBrainz Picard modified the library), once I reSynced Symphonium it solved :slight_smile:

Thanks for the quick response :slight_smile:

4

Ok, I’ve implemented better log and return messages: fix(subsonic): surface why a transcode decision failed by deluan · Pull Request #5820 · navidrome/navidrome · GitHub

5

One more thing you’ll like: a missing file (moved/deleted) now comes back as error code 70 (“data not found”), the same code you already get for an unknown id, so you can branch on it and trigger a resync. Files that exist but are corrupt/unreadable stay code 0

6

Thanks help debugging a lot.