参数说明
必需参数
| 参数 | 类型 | 说明 |
|---|---|---|
| start_frame | 图像 | 视频的起始帧图像 |
| end_frame | 图像 | 视频的结束帧图像 |
| prompt | 字符串 | 描述视频内容和过渡效果的文本提示词 |
| negative_prompt | 字符串 | 指定不希望在视频中出现的元素 |
| cfg_scale | 浮点数 | 配置缩放值，控制对提示词的遵循程度 |
| aspect_ratio | 选择项 | 输出视频的宽高比 |
| mode | 选择项 | 视频生成配置，格式为”模式/时长/模型名称” |
Mode 选项
节点支持以下模式选项：- standard mode / 5s duration / kling-v1
- standard mode / 5s duration / kling-v1-5
- pro mode / 5s duration / kling-v1
- pro mode / 5s duration / kling-v1-5
- pro mode / 5s duration / kling-v1-6
- pro mode / 10s duration / kling-v1-5
- pro mode / 10s duration / kling-v1-6
输出
| 输出 | 类型 | 说明 |
|---|---|---|
| VIDEO | 视频 | 生成的视频结果 |
工作原理
Kling Start-End Frame to Video 节点分析起始帧和结束帧图像，然后创建连接这两个状态的平滑过渡序列。节点将图像和参数发送到Kling的API服务器，后者生成所有必要的中间帧，创建流畅的变换效果。 可以通过提示词引导过渡效果的风格和内容，而负面提示词则帮助避免不需要的元素。源码参考
[节点源码 (更新于2025-05-03)]
class KlingStartEndFrameNode(KlingImage2VideoNode):
"""
Kling First Last Frame Node. This node allows creation of a video from a first and last frame. It calls the normal image to video endpoint, but only allows the subset of input options that support the `image_tail` request field.
"""
@staticmethod
def get_mode_string_mapping() -> dict[str, tuple[str, str, str]]:
"""
Returns a mapping of mode strings to their corresponding (mode, duration, model_name) tuples.
Only includes config combos that support the `image_tail` request field.
"""
return {
"standard mode / 5s duration / kling-v1": ("std", "5", "kling-v1"),
"standard mode / 5s duration / kling-v1-5": ("std", "5", "kling-v1-5"),
"pro mode / 5s duration / kling-v1": ("pro", "5", "kling-v1"),
"pro mode / 5s duration / kling-v1-5": ("pro", "5", "kling-v1-5"),
"pro mode / 5s duration / kling-v1-6": ("pro", "5", "kling-v1-6"),
"pro mode / 10s duration / kling-v1-5": ("pro", "10", "kling-v1-5"),
"pro mode / 10s duration / kling-v1-6": ("pro", "10", "kling-v1-6"),
}
@classmethod
def INPUT_TYPES(s):
modes = list(KlingStartEndFrameNode.get_mode_string_mapping().keys())
return {
"required": {
"start_frame": model_field_to_node_input(
IO.IMAGE, KlingImage2VideoRequest, "image"
),
"end_frame": model_field_to_node_input(
IO.IMAGE, KlingImage2VideoRequest, "image_tail"
),
"prompt": model_field_to_node_input(
IO.STRING, KlingImage2VideoRequest, "prompt", multiline=True
),
"negative_prompt": model_field_to_node_input(
IO.STRING,
KlingImage2VideoRequest,
"negative_prompt",
multiline=True,
),
"cfg_scale": model_field_to_node_input(
IO.FLOAT, KlingImage2VideoRequest, "cfg_scale"
),
"aspect_ratio": model_field_to_node_input(
IO.COMBO,
KlingImage2VideoRequest,
"aspect_ratio",
enum_type=AspectRatio,
),
"mode": (
modes,
{
"default": modes[2],
"tooltip": "The configuration to use for the video generation following the format: mode / duration / model_name.",
},
),
},
"hidden": {"auth_token": "AUTH_TOKEN_COMFY_ORG"},
}
DESCRIPTION = "Generate a video sequence that transitions between your provided start and end images. The node creates all frames in between, producing a smooth transformation from the first frame to the last."
def parse_inputs_from_mode(self, mode: str) -> tuple[str, str, str]:
"""Parses the mode input into a tuple of (model_name, duration, mode)."""
return KlingStartEndFrameNode.get_mode_string_mapping()[mode]
def api_call(
self,
start_frame: torch.Tensor,
end_frame: torch.Tensor,
prompt: str,
negative_prompt: str,
cfg_scale: float,
aspect_ratio: str,
mode: str,
auth_token: Optional[str] = None,
):
mode, duration, model_name = self.parse_inputs_from_mode(mode)
return super().api_call(
prompt=prompt,
negative_prompt=negative_prompt,
model_name=model_name,
start_frame=start_frame,
cfg_scale=cfg_scale,
mode=mode,
aspect_ratio=aspect_ratio,
duration=duration,
end_frame=end_frame,
auth_token=auth_token,
)