# pdeljanov/Symphonia

Pure Rust multimedia format demuxing, tag reading, and audio decoding library

Repository: https://github.com/pdeljanov/Symphonia
Canonical: https://ross.abutalabs.com/products/symphonia
Language: Rust
License: MPL-2.0
License Family: copyleft
Topics: rust, flac, wav, pcm, mp3, id3v2, id3v1, media, audio, ogg, aac, mp4, vorbis, alac, apple-lossless, m4a, audio-decoder, mkv, adpcm, mp2
Last push: 2026-08-13T03:19:51+00:00

## Health v2 (maintenance only)
Score: 89/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 97, release rhythm 73, longevity 100
- inputs: {"age_days": 2748, "days_push": 20, "days_rel": 20, "gap_med": 152.0, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3368, forks 231 (observed 2026-08-28T04:07:58.316688+00:00)

## What it is
Symphonia is a pure Rust library for audio decoding, media container demuxing, and metadata/tag reading, supporting formats like FLAC, MP3, AAC, Vorbis, WAV, MP4, OGG, and MKV. It is 100% safe Rust with minimal dependencies, automatic format detection, and gapless playback support.

## Use cases
- decode mp3 and flac files in a rust application
- read id3 tags from audio files
- demux audio from mp4 or mkv containers
- build a music player with gapless playback in rust
- convert audio files between formats without ffmpeg
- detect audio format automatically from a byte stream

## When to choose
- you need a dependency-free, pure Rust audio decoder with no C libraries
- you want safe Rust code for decoding popular audio codecs
- you need metadata/tag reading alongside decoding
- performance and safety are both priorities

## When to avoid
- you need video decoding, not just audio
- you require a C API or WASM build (still planned)
- you need exotic codecs not covered by the supported format list

## Facets
- artifact type: library
- maturity: active
- function: audio-processing, parser, serialization
- domain: media, developer-tools
- platform: rust, cross-platform
- tags: audio-decoder, demuxer, flac, mp3, aac, vorbis, metadata-tags, safe-rust, gapless-playback, audio

## Member repositories
- pdeljanov/Symphonia (main) score 89

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:58.316688+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:40:16.912133+00:00, confidence not recorded.
  - readme: https://github.com/pdeljanov/Symphonia (fetched 2026-08-28T04:07:58.316688+00:00, sha aa79e7e95741)
  - registry_crates: https://crates.io/api/v1/crates/symphonia (fetched 2026-08-29T09:33:35.715233+00:00, sha 821aabd1c06e)
- Data as of 2026-08-30T08:39:29.467469+00:00.