# presburger/qmc-decoder

Fastest & best convert qmc 2 mp3 | flac tools

Repository: https://github.com/presburger/qmc-decoder
Canonical: https://ross.abutalabs.com/products/qmc-decoder
Language: C++
License: MIT
License Family: permissive
Topics: flac, mp3
Last push: 2022-06-21T07:47:22+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2703, "days_push": 1534, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2238, forks 396 (observed 2026-08-28T04:06:29.553730+00:00)

## What it is
A fast C++ command-line tool that converts QQMusic's encrypted QMC audio files (QMC3/QMC0/QMCFLAC) into standard MP3 or FLAC formats. It can batch-convert all QMC files in a directory on Linux, macOS, and Windows.

## Use cases
- convert qmc files to mp3
- convert qmcflac to flac
- batch decrypt qqmusic downloaded songs
- make qmc music files playable in other players
- convert qmc0 files to mp3

## When to choose
- you have many QMC files from QQMusic to convert quickly
- you want a simple cross-platform CLI or drag-and-drop conversion
- you need batch conversion of a whole directory of QMC files

## When to avoid
- you need automatic metadata or album art fetching (listed as TODO)
- you need conversion of other encrypted formats like NCM or KGM
- you want a GUI application

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: audio-processing, cli, file-system
- domain: media, files, developer-tools
- platform: windows, cli, cpp
- tags: qmc, qqmusic, drm-decryption, audio-conversion, mp3, flac, audio, linux, macos

## Member repositories
- presburger/qmc-decoder (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:29.553730+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 2026-08-30T02:44:14.422623+00:00, confidence not recorded.
  - readme: https://github.com/presburger/qmc-decoder (fetched 2026-08-28T04:06:29.553730+00:00, sha 41846d342598)
- Data as of 2026-08-30T08:39:29.467469+00:00.