# Transcribe

Requires Bash, FFmpeg, curl, jq, and standard coreutils.

```sh
export OPENROUTER_API_KEY='sk-or-v1-...'
./transcribe recording.m4a
./transcribe video.mp4 > transcript.txt
```

Accepts m4a, mp4, aac, flac, opus, mp3, ogg, wav, and other formats your
FFmpeg supports. Uses the first audio track, converts it to mono 16 kHz MP3
at 64 kbps (requires FFmpeg's libmp3lame encoder),
and sends it to OpenRouter's `microsoft/mai-transcribe-2` model. Temporary
files are removed on exit. The transcript goes to stdout; errors to stderr.

One file per invocation; the whole recording is sent in one request, so
the service's audio length and request size limits apply.

[OpenRouter model and API reference](https://openrouter.ai/microsoft/mai-transcribe-2)