git:20260825.52039cc to git:20260827.6e63640

---

name: audio-to-wav

description: Converts a single audio file to WAV (PCM) using FFmpeg while preserving source quality. Use when the user wants to convert audio to WAV, transcode MP3/OGG/FLAC/AAC to WAV without downgrading sample rate or bit depth, or export a lossless WAV source asset.

---

# Audio to WAV

Convert a supported audio file to **PCM WAV** via FFmpeg. **Defaults preserve source quality** — sample rate is always kept, bit depth matched from the source (32-bit float for lossy inputs), channels preserved.

## Rules

When this skill applies, read and follow [skill-dependency-manager](../skill-dependency-manager.md) — run scripts as documented, install missing tools into `.dependency/`.

## Quick Start

Default output: `<audio-dir>/audio-to-wav/<basename>.wav`

```bash

.dependency/python/python.exe .ai/audio-to-wav/convert.py --audio path/to/audio.flac

```

Example: `audio/sfx/tank/tank_move.flac` → `audio/sfx/tank/audio-to-wav/tank_move.wav` (same rate/depth)

## Format Defaults

| Setting | Default | Notes |

|---------|---------|-------|

| Sample rate | Preserve source | Always kept; no resampling |

| Bit depth | Match source | Probed per file; lossy → 32-bit float PCM |

| Existing PCM WAV | Stream copy | Bit-perfect when no overrides |

## Common Flags

Force 16-bit PCM:

```bash

.dependency/python/python.exe .ai/audio-to-wav/convert.py --audio path/to/audio.mp3 -b 16

```

Custom output path:

```bash

.dependency/python/python.exe .ai/audio-to-wav/convert.py --audio path/to/audio.flac --output path/to/out.wav

```

**Never overwrite source files.** The script writes only under `audio-to-wav/` (or `--output`). Input must be a single audio file (`--audio`), not a directory. Supported inputs: `.mp3`, `.ogg`, `.flac`, `.aac`, `.m4a`, `.wma`, `.wav`.

## Agent Notes

1. Use the bundled script, not hand-written `ffmpeg -i …` commands.

2. **Sample rate is always preserved** — use the `audio-sample-rate-standardize` skill if resampling is needed.

3. **Do not reduce bit depth** unless the user explicitly asks — omit `-b`.

4. **Already PCM WAV?** Stream-copied by default (no generation loss).

5. Missing Python/FFmpeg → populate `.dependency/` per skill-dependency-manager, retry same command.

6. **Do not copy, move, or replace the source with converted output** — tell the user where output files are; they swap assets manually when ready.

7. FFmpeg codec and probing details: [reference.md](reference.md)

## Tests

From repo root:

```bash

.dependency/python/python.exe .ai/audio-to-wav/test_convert.py

```

Manual CLI examples: [.ai/audio-to-wav/test.md](../../../.ai/audio-to-wav/test.md)