AI Captions API: AI Video Editing

AI Captions API Reference

Endpoint

POST https://api.muapi.ai/api/v1/ai-captions

Submit a job with your MuApi API key in the x-api-key header, then poll https://api.muapi.ai/api/v1/predictions/{request_id}/result until status is completed.

Parameters

Name	Type	Required	Description
video_url	string	Yes	Public URL of the video to add captions to. Maximum 600MB or 10 minutes.
language	string	No	Language of the video audio for transcription.Options: English, English (USA), English (UK), English (Australia), English (Canada), Japanese, Chinese, German, Hindi, French, French (France), French (Canada), Korean, Portuguese (Brazil), Portuguese (Portugal), Portuguese, Spanish (Spain), Spanish (Mexico), Italian, Spanish, Indonesian, Dutch, Turkish, Filipino, Polish, Swedish, Bulgarian, Romanian, Arabic (Saudi Arabia), Arabic (UAE), Arabic, Czech, Greek, Finnish, Croatian, Malay, Slovak, Danish, Tamil, Telugu, Ukrainian, Russian, Hungarian, Norwegian, VietnameseDefault: "English"
theme	string	No	Visual style/theme for the captions. E.g. Hormozi_1, Hormozi_2.Options: Hormozi_1, Hormozi_2, Hormozi_3, Beast, Ali, Noah, Karl, Luke, Devin, Celine, Maya, Ella, Dan, David, Tracy, Umi, Iman, WilliamDefault: "Hormozi_1"

cURL example

REQUEST_ID=$(curl -s -X POST https://api.muapi.ai/api/v1/ai-captions \
  -H "x-api-key: $MUAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"video_url":"https://example.com/your-video_url"}' | jq -r .request_id)

curl -s https://api.muapi.ai/api/v1/predictions/$REQUEST_ID/result -H "x-api-key: $MUAPI_API_KEY"

Python example

import os, time, requests

API = "https://api.muapi.ai/api/v1"
headers = {"x-api-key": os.environ["MUAPI_API_KEY"]}

r = requests.post(f"{API}/ai-captions", headers=headers, json={"video_url":"https://example.com/your-video_url"})
request_id = r.json()["request_id"]

while True:
    res = requests.get(f"{API}/predictions/{request_id}/result", headers=headers).json()
    if res["status"] == "completed":
        print(res["outputs"]); break
    if res["status"] == "failed":
        raise RuntimeError(res.get("error"))
    time.sleep(3)

Full docs and agent/MCP integration: llms.txt. Get an API key at muapi.ai/access-keys.