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Playground demo key · api.reefapi.com
post/file-convert/v1/audio_extract2 credits

Extract the audio track from a video (mp4/webm/mkv/avi) → mp3 (default) / m4a / wav / flac / ogg / opus. Stream-copies losslessly when the codec already matches the target. NOT a video transcoder (phase-2). Output delivery: each produced file ≤10MB comes inline as base64 (files[].file_b64); 10-50MB comes as a one-time download token (files[].download_path, 30min TTL); >50MB total is rejected.

Parameters
No parameters — just send.
request preview
curl -X POST https://api.reefapi.com/file-convert/v1/audio_extract \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{}'

Hit Send to run this endpoint live.

Playground · ReefAPI