# Test record: FLAC -> MP3

- Date: `2026-07-30`
- Build: `LocalFlux 1.0.7.0 (product build 1.0.7.0+6c828b7d7c8e2e070a2db0206a106adb877affcf)`
- Environment: `Daily-use Windows x64 host, Windows build 10.0.26200.0`
- Environment label: `DailyUseX64` (not clean-VM evidence)
- Route: `FLAC -> MP3`
- Runtime: `bundled FFmpeg with libmp3lame`
- Source: `samples/music-master.flac`
- Output: `samples/music-master_converted.mp3`
- Source SHA-256: `5A0340FE3E74A7FBAF73894C30DFF04DC52A9A36FBCDB87383B461C6E7029510`
- Output SHA-256: `E453F9E3B451E1E49ACD77F7ED12D19F69694F41411D0C3B8053CBBF29F0DF11`

## Observations

- The source was mono FLAC at 44.1 kHz and 6.000 seconds.
- The output was mono MP3 at 44.1 kHz and 6.000 seconds.
- Input size was 81,590 bytes; output size was 48,501 bytes (about 41% smaller for the simple fixture).

## Limitations

- The output is lossy and must not replace the FLAC master.
- The simple mono signal is not representative of stereo music compression ratios.
- The fixture does not prove artwork, ReplayGain, cue, gapless-album, high-resolution, or multichannel behavior.

## Repository evidence consulted

- `src/LocalFlux.Core/Data/routes.json` for the explicit route.
- `tests/Samples/route-matrix.md` and route acceptance tests for runtime coverage.
- `src/LocalFlux.Core/Services/FfmpegArguments.cs`, `ImageMagickArguments.cs`, or the LibreOffice executor as applicable.
- `docs/store/landing-page-copy.md` for local-processing, offline, safe-output, and claim guardrails.

## Review result

`PASS` for this fixture and captured build, subject to the limitations above.