Runway

import requests

# Runway API를 통한 비디오 생성 예시
RUNWAY_API_KEY = "your_api_key_here"
BASE_URL = "https://api.dev.runwayml.com/v1"

def generate_video_from_text(prompt: str, duration: int = 10):
    """텍스트로 비디오 생성 (Gen-3 Alpha)"""
    headers = {
        "Authorization": f"Bearer {RUNWAY_API_KEY}",
        "Content-Type": "application/json"
    }

    payload = {
        "model": "gen3a_turbo",  # gen3a_turbo 또는 gen3a
        "prompt": prompt,
        "duration": duration,  # 5 또는 10초
        "ratio": "16:9",  # 16:9, 9:16, 1:1
        "watermark": False  # Pro 이상에서 비활성화 가능
    }

    # 작업 생성
    response = requests.post(
        f"{BASE_URL}/text_to_video",
        headers=headers,
        json=payload
    )
    task_id = response.json()["id"]

    # 결과 폴링
    import time
    while True:
        status = requests.get(
            f"{BASE_URL}/tasks/{task_id}",
            headers=headers
        ).json()

        if status["status"] == "SUCCEEDED":
            return status["output"]["video_url"]
        elif status["status"] == "FAILED":
            raise Exception(f"생성 실패: {status['error']}")

        time.sleep(5)

# 사용 예시
video_url = generate_video_from_text(
    prompt="A serene Japanese garden with cherry blossoms falling, "
           "camera slowly panning right, golden hour lighting",
    duration=10
)
print(f"생성된 비디오: {video_url}")

# Gen-3 Alpha: 10초 = 100 크레딧 ($1)
# Gen-3 Alpha Turbo: 10초 = 50 크레딧 ($0.50)

def generate_video_from_image(image_path: str, prompt: str, duration: int = 10):
    """이미지에서 비디오 생성 (Image-to-Video)"""
    import base64

    with open(image_path, "rb") as img_file:
        image_base64 = base64.b64encode(img_file.read()).decode()

    headers = {
        "Authorization": f"Bearer {RUNWAY_API_KEY}",
        "Content-Type": "application/json"
    }

    payload = {
        "model": "gen3a_turbo",
        "prompt_image": f"data:image/png;base64,{image_base64}",
        "prompt_text": prompt,  # 옵션: 모션 가이드
        "duration": duration
    }

    response = requests.post(
        f"{BASE_URL}/image_to_video",
        headers=headers,
        json=payload
    )
    return response.json()["id"]

# 이미지에서 비디오 생성 예시
task_id = generate_video_from_image(
    "product_photo.png",
    "smooth camera zoom in, product rotating slowly",
    duration=5
)

# === 프롬프트 작성 팁 ===
# 좋은 프롬프트:
# "A golden retriever running through autumn leaves,
#  slow motion, cinematic lighting, shallow depth of field"

# 카메라 움직임 키워드:
# pan left/right, zoom in/out, tracking shot,
# dolly in/out, static shot, handheld, crane shot