Meta Muse 動画生成API：料金と最大60秒の生成

export LAOZHANG_API_KEY="LaoZhang APIのキー"
export BASE_URL="https://api.laozhang.ai"

curl -s -X POST "$BASE_URL/v1/videos" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  --data-raw '{
    "model": "muse-video",
    "prompt": "A lighthouse on a rocky coast at dawn, waves crashing on the rocks, a few seagulls flying past, slow push-in, cinematic lighting",
    "seconds": "10",
    "aspect_ratio": "16:9"
  }' | tee muse-create.json

export VIDEO_ID=$(jq -r '.id' muse-create.json)

{
  "id": "task_qyP7fa67hjtpArfMjnAnOwpVe1UEgyHh",
  "object": "video",
  "model": "muse-video",
  "status": "queued",
  "progress": 0,
  "seconds": "10",
  "created_at": 1793328222
}

curl -s -X POST "$BASE_URL/v1/videos" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  --data-raw '{
    "model": "muse-video",
    "prompt": "雪が解け、木の葉が金色に変わって、冬が秋へと移り変わる",
    "seconds": "8",
    "image": "https://example.com/winter.jpg",
    "last_frame": "https://example.com/autumn.jpg"
  }'

curl -s -X POST "$BASE_URL/v1/videos" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -F model=muse-video \
  -F prompt="子猫がまばたきをして、あくびをする" \
  -F seconds=5 \
  -F aspect_ratio=9:16 \
  -F input_reference=@./cat.jpg

curl -s -X POST "$BASE_URL/v1/videos" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  --data-raw '{
    "model": "muse-video",
    "prompt": "このキツネは、冬から秋へと移り変わる森の中を歩いていく",
    "seconds": "10",
    "aspect_ratio": "16:9",
    "reference_images": [
      "https://example.com/fox-winter.jpg",
      "https://example.com/fox-autumn.jpg"
    ]
  }'

curl -s -X POST "$BASE_URL/v1/videos" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  --data-raw '{
    "model": "muse-video-20s",
    "prompt": "ボートは朝霧の中へ流れていき、海の上に太陽が昇る",
    "video_url": "https://example.com/boat-5s.mp4"
  }'

curl -s "$BASE_URL/v1/videos/$VIDEO_ID" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY"

{
  "id": "task_1OuWjS9JUWpjiin8zr3S3vzhQNjTILIF",
  "object": "video",
  "model": "muse-video",
  "status": "in_progress",
  "progress": 30,
  "seconds": "10",
  "size": "1280x720",
  "created_at": 1793328220
}

{
  "id": "task_Qb8zDoLJMSDsOKdRWLMCwzRgkg2EanF0",
  "object": "video",
  "model": "muse-video",
  "status": "completed",
  "progress": 100,
  "seconds": "5",
  "size": "1280x720",
  "created_at": 1793325393,
  "completed_at": 1793325521,
  "video_url": "https://media.laozhang.ai/videos/video_6efb7e6d2b37665752192eb1-a95d03b30c0f.mp4"
}

{
  "id": "task_GcyZA3g7We2nQOl3QaSQX1nroSKli3O7",
  "object": "video",
  "model": "muse-video",
  "status": "failed",
  "progress": 100,
  "seconds": "8",
  "size": "1280x720",
  "created_at": 1793326360,
  "error": {
    "code": "video_generation_failed",
    "message": "Could not download last_frame (HTTP 429). Use a public image link or a data URL."
  }
}

curl -L -o muse-video.mp4 "$(curl -s "$BASE_URL/v1/videos/$VIDEO_ID" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" | jq -r '.video_url')"

import os
import time

import requests

BASE_URL = "https://api.laozhang.ai"
HEADERS = {"Authorization": f"Bearer {os.environ['LAOZHANG_API_KEY']}"}

task = requests.post(
    f"{BASE_URL}/v1/videos",
    headers=HEADERS,
    json={
        "model": "muse-video",
        "prompt": "A lighthouse on a rocky coast at dawn, waves crashing on the rocks, a few seagulls flying past, slow push-in, cinematic lighting",
        "seconds": "10",
        "aspect_ratio": "16:9",
    },
    timeout=120,
)
task.raise_for_status()
video_id = task.json()["id"]

deadline = time.time() + 30 * 60
while True:
    video = requests.get(f"{BASE_URL}/v1/videos/{video_id}", headers=HEADERS, timeout=60).json()
    if video["status"] == "completed":
        break
    if video["status"] == "failed":
        raise RuntimeError(video["error"]["message"])
    if time.time() > deadline:
        raise TimeoutError(f"{video_id} はまだ実行中です。あとで同じidのポーリングを続けてください")
    time.sleep(15)

with open("muse-video.mp4", "wb") as f:
    f.write(requests.get(video["video_url"], timeout=300).content)
print("保存しました: muse-video.mp4、", video["seconds"], "秒")