Manual / Library
Formats, metadata, and artwork
Learn which files are scanned and how tags and cover images are resolved.
Candidate audio formats
NocturneL scans these filename extensions, case-insensitively:
- MP3 (
.mp3) - M4A (
.m4a) - AAC (
.aac) - OGG (
.ogg) - Opus (
.opus) - WAV (
.wav) - FLAC (
.flac)
An accepted extension makes a file a scan candidate. Actual decoding depends on the device’s Android media codecs, so a candidate can still be unplayable on a particular phone.
Metadata fallbacks
NocturneL prefers embedded title, album, artist, track number, year, and artwork metadata when available. Missing text tags fall back to the file and folder path: the filename becomes the track title, its parent folder becomes the album, and the next parent becomes the artist. Numbered filenames such as 01 - Track Name.flac can supply a track number and cleaned title.
Artwork order
Artwork is resolved in this order:
- A manual image chosen with SET COVER
- Embedded audio artwork
- A recognized folder image
- The generated terminal placeholder
Recognized folder-cover filenames are cover.jpg, folder.jpg, albumart.jpg, and front.jpg, matched without regard to case. Selecting a manual image for an album makes it the first choice on future loads while Android retains access.