# Call Recorder

Records microphone and system audio (everything playing on your speakers/headphones) into a single MP3 file — ideal for transcription with Whisper, Gemini, or similar services.

## Requirements

- Linux with PipeWire / PulseAudio
- `ffmpeg`

## Usage

```bash
# Start recording before your call
./record.sh

# Join your call normally, then press Ctrl+C when done.
# Recording is saved to recordings/call_YYYYMMDD_HHMMSS.mp3
```

### Check which inputs are active

```bash
./record.sh --show-inputs
```

Displays a live bar chart of both inputs in the terminal:

```
  Mikrofon     : [████████████░░░░░░░░░░░░░░░░░░] -18 dB
  System Audio : [░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░] -60 dB
```

Colour coding: green (normal) → yellow (−12 dB) → red (−3 dB). Press Ctrl+C to exit.

### List available audio sources

```bash
./list-sources.sh
```

## How it works

`record.sh` detects the default PipeWire/PulseAudio sink, then runs `ffmpeg` to simultaneously capture:

- **Microphone** — PulseAudio default source
- **System audio** — monitor of the default sink (everything you hear)

Both streams are mixed and encoded as MP3 at 128 kbps (~11 MB / 15 min).

## Troubleshooting

**Missing system audio or microphone?**
Run `./list-sources.sh` to inspect available devices. The script auto-detects the default sink at startup — if you switched audio output after launching (e.g. plugged in headphones), restart the script.

## License

This project is licensed under the [GNU General Public License v3.0](LICENSE).