参数说明
必需参数
| 参数 | 类型 | 默认值 | 说明 |
|---|---|---|---|
| image | 图像 | - | 要转换为视频的输入图像 |
| prompt_text | 字符串 | "" | 描述视频动作和内容的文本提示词 |
| negative_prompt | 字符串 | "" | 指定不希望在视频中出现的元素 |
| seed | 整数 | 0 | 生成过程的随机种子 |
| resolution | 选择项 | ”1080p” | 生成视频的分辨率 |
| duration | 选择项 | ”5s” | 生成视频的持续时间 |
输出
| 输出 | 类型 | 说明 |
|---|---|---|
| VIDEO | 视频 | 生成的视频结果 |
工作流程
节点将输入图像和相关参数（提示词、分辨率、持续时间等）通过多部分表单数据发送到Pika的API服务器。API处理后返回生成的视频结果。用户可以通过调整提示词、负面提示词、随机种子等参数来控制生成效果。源码参考
[节点源码 (更新于2025-05-05)]
class PikaImageToVideoV2_2(PikaNodeBase):
"""Pika 2.2 Image to Video Node."""
@classmethod
def INPUT_TYPES(cls):
return {
"required": {
"image": (
IO.IMAGE,
{"tooltip": "The image to convert to video"},
),
**cls.get_base_inputs_types(PikaBodyGenerate22I2vGenerate22I2vPost),
},
"hidden": {
"auth_token": "AUTH_TOKEN_COMFY_ORG",
},
}
DESCRIPTION = "Sends an image and prompt to the Pika API v2.2 to generate a video."
RETURN_TYPES = ("VIDEO",)
def api_call(
self,
image: torch.Tensor,
prompt_text: str,
negative_prompt: str,
seed: int,
resolution: str,
duration: int,
auth_token: Optional[str] = None,
) -> tuple[VideoFromFile]:
"""API call for Pika 2.2 Image to Video."""
# Convert image to BytesIO
image_bytes_io = tensor_to_bytesio(image)
image_bytes_io.seek(0) # Reset stream position
# Prepare file data for multipart upload
pika_files = {"image": ("image.png", image_bytes_io, "image/png")}
# Prepare non-file data using the Pydantic model
pika_request_data = PikaBodyGenerate22I2vGenerate22I2vPost(
promptText=prompt_text,
negativePrompt=negative_prompt,
seed=seed,
resolution=resolution,
duration=duration,
)
initial_operation = SynchronousOperation(
endpoint=ApiEndpoint(
path=PATH_IMAGE_TO_VIDEO,
method=HttpMethod.POST,
request_model=PikaBodyGenerate22I2vGenerate22I2vPost,
response_model=PikaGenerateResponse,
),
request=pika_request_data,
files=pika_files,
content_type="multipart/form-data",
auth_token=auth_token,
)
return self.execute_task(initial_operation, auth_token)