Wan — Animate from first frame

import base64
import os
from http import HTTPStatus
from dashscope import VideoSynthesis
import mimetypes
import dashscope

dashscope.base_http_api_url = 'https://dashscope-intl.aliyuncs.com/api/v1'


# If you haven't configured the environment variable, replace the next line with your API key: api_key="sk-xxx"
api_key = os.getenv("DASHSCOPE_API_KEY")

# --- Helper function: For Base64 encoding ---
# Format: data:{MIME_type};base64,{base64_data}
def encode_file(file_path):
  mime_type, _ = mimetypes.guess_type(file_path)
  if not mime_type or not mime_type.startswith("image/"):
    raise ValueError("Unsupported or unrecognized image format")
  with open(file_path, "rb") as image_file:
    encoded_string = base64.b64encode(image_file.read()).decode('utf-8')
  return f"data:{mime_type};base64,{encoded_string}"

"""
Image input methods:
Choose one of the following three methods,

1. Use a public URL - Suitable for publicly accessible images
2. Use a local file - Suitable for local development and testing
3. Use Base64 encoding - Suitable for private images or scenarios requiring encrypted transmission
"""

# [Method 1] Use a publicly accessible image URL
# Example: Use a public image URL
img_url = "https://help-static-aliyun-doc.aliyuncs.com/file-manage-files/zh-CN/20250925/wpimhv/rap.png"

# [Method 2] Use a local file (supports absolute and relative paths)
# Format requirement: file:// + file path
# Example (absolute path):
# img_url = "file://" + "/path/to/your/img.png"    # Linux/macOS
# img_url = "file://" + "/C:/path/to/your/img.png"  # Windows
# Example (relative path):
# img_url = "file://" + "./img.png"                # Relative to the current executable file's path

# [Method 3] Use a Base64-encoded image
# img_url = encode_file("./img.png")

# Set audio URL
audio_url = "https://help-static-aliyun-doc.aliyuncs.com/file-manage-files/zh-CN/20250925/ozwpvi/rap.mp3"

def sample_call_i2v():
  # Synchronous call, returns result directly
  print('please wait...')
  rsp = VideoSynthesis.call(api_key=api_key,
                              model='wan2.6-i2v-flash',
                              prompt='A scene of urban fantasy art. A dynamic graffiti art character. A boy made of spray paint comes to life from a concrete wall. He raps an English song at high speed while striking a classic, energetic rapper pose. The scene is set under an urban railway bridge at night. The lighting comes from a single street lamp, creating a cinematic atmosphere full of high energy and amazing detail. The audio of the video consists entirely of his rap, with no other dialogue or noise.',
                              img_url=img_url,
                              audio_url=audio_url,
                              resolution="720P",
                              duration=10,
                              prompt_extend=True,
                              watermark=False,
                              negative_prompt="",
                              seed=12345)
  print(rsp)
  if rsp.status_code == HTTPStatus.OK:
    print("video_url:", rsp.output.video_url)
  else:
    print('Failed, status_code: %s, code: %s, message: %s' %
              (rsp.status_code, rsp.code, rsp.message))


if __name__ == '__main__':
  sample_call_i2v()