> ## Documentation Index > Fetch the complete documentation index at: https://docs.comfy.org/llms.txt > Use this file to discover all available pages before exploring further. # PixVerse Transition Video - ComfyUI 原生节点文档 > 使用 PixVerse 的AI技术创建从起始帧到结束帧平滑过渡的视频 ComfyUI 原生 PixVerse Transition Video 节点 PixVerse Transition Video 节点连接到 PixVerse 的过渡视频生成 API，允许你提供开始和结束图像，生成在两者之间平滑过渡的视频序列。节点会自动创建所有中间帧，产生流畅的变换效果，特别适合创建变形、场景转换和对象演变等视觉效果。 ## 参数说明 ### 必需参数 | 参数 | 类型 | 默认值 | 说明 | | ----------------- | --- | --------------------------- | ------------------------ | | first\_frame | 图像 | - | 视频的起始帧图像 | | last\_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 | | quality | 选择项 | "PixverseQuality.res\_540p" | 生成视频的质量级别 | | duration\_seconds | 选择项 | - | 生成视频的持续时间 | | motion\_mode | 选择项 | - | 视频的动作模式 | | seed | 整数 | 0 | 生成过程的随机种子，范围0-2147483647 | ### 可选参数 | 参数 | 类型 | 默认值 | 说明 | | ------------------ | ------------------ | ---- | ---------------------- | | negative\_prompt | 字符串 | "" | 指定不希望在视频中出现的元素 | | pixverse\_template | PIXVERSE\_TEMPLATE | None | 可选的PixVerse模板配置，影响生成风格 | ### 参数限制说明 * 当quality设置为1080p时，动作模式(motion\_mode)会强制设为normal，持续时间(duration\_seconds)会强制设为5秒 * 当持续时间(duration\_seconds)不等于5秒时，动作模式(motion\_mode)会强制设为normal ### 输出 | 输出 | 类型 | 说明 | | ----- | -- | ------- | | VIDEO | 视频 | 生成的视频结果 | ## 源码参考 ```python theme={null} class PixverseTransitionVideoNode(ComfyNodeABC): """ Generates videos synchronously based on prompt and output_size. """ RETURN_TYPES = (IO.VIDEO,) DESCRIPTION = cleandoc(__doc__ or "") # Handle potential None value FUNCTION = "api_call" API_NODE = True CATEGORY = "api node/video/Pixverse" @classmethod def INPUT_TYPES(s): return { "required": { "first_frame": ( IO.IMAGE, ), "last_frame": ( IO.IMAGE, ), "prompt": ( IO.STRING, { "multiline": True, "default": "", "tooltip": "Prompt for the video generation", }, ), "quality": ( [resolution.value for resolution in PixverseQuality], { "default": PixverseQuality.res_540p, }, ), "duration_seconds": ([dur.value for dur in PixverseDuration],), "motion_mode": ([mode.value for mode in PixverseMotionMode],), "seed": ( IO.INT, { "default": 0, "min": 0, "max": 2147483647, "control_after_generate": True, "tooltip": "Seed for video generation.", }, ), }, "optional": { "negative_prompt": ( IO.STRING, { "default": "", "forceInput": True, "tooltip": "An optional text description of undesired elements on an image.", }, ), "pixverse_template": ( PixverseIO.TEMPLATE, { "tooltip": "An optional template to influence style of generation, created by the Pixverse Template node." } ) }, "hidden": { "auth_token": "AUTH_TOKEN_COMFY_ORG", }, } def api_call( self, first_frame: torch.Tensor, last_frame: torch.Tensor, prompt: str, quality: str, duration_seconds: int, motion_mode: str, seed, negative_prompt: str=None, pixverse_template: int=None, auth_token=None, **kwargs, ): first_frame_id = upload_image_to_pixverse(first_frame, auth_token=auth_token) last_frame_id = upload_image_to_pixverse(last_frame, auth_token=auth_token) # 1080p is limited to 5 seconds duration # only normal motion_mode supported for 1080p or for non-5 second duration if quality == PixverseQuality.res_1080p: motion_mode = PixverseMotionMode.normal duration_seconds = PixverseDuration.dur_5 elif duration_seconds != PixverseDuration.dur_5: motion_mode = PixverseMotionMode.normal operation = SynchronousOperation( endpoint=ApiEndpoint( path="/proxy/pixverse/video/transition/generate", method=HttpMethod.POST, request_model=PixverseTransitionVideoRequest, response_model=PixverseVideoResponse, ), request=PixverseTransitionVideoRequest( first_frame_img=first_frame_id, last_frame_img=last_frame_id, prompt=prompt, quality=quality, duration=duration_seconds, motion_mode=motion_mode, negative_prompt=negative_prompt if negative_prompt else None, template_id=pixverse_template, seed=seed, ), auth_token=auth_token, ) response_api = operation.execute() if response_api.Resp is None: raise Exception(f"Pixverse request failed: '{response_api.ErrMsg}'") operation = PollingOperation( poll_endpoint=ApiEndpoint( path=f"/proxy/pixverse/video/result/{response_api.Resp.video_id}", method=HttpMethod.GET, request_model=EmptyRequest, response_model=PixverseGenerationStatusResponse, ), completed_statuses=[PixverseStatus.successful], failed_statuses=[PixverseStatus.contents_moderation, PixverseStatus.failed, PixverseStatus.deleted], status_extractor=lambda x: x.Resp.status, auth_token=auth_token, ) response_poll = operation.execute() vid_response = requests.get(response_poll.Resp.url) return (VideoFromFile(BytesIO(vid_response.content)),) ```