ByteDance2FirstLastFrameNode - ComfyUI Built-in Node Documentation

This node uses ByteDance’s Seedance 2.0 model to generate a video. It creates the video based on a text prompt and a required first frame image. You can optionally provide a last frame image to guide the ending of the video sequence.

Inputs

Parameter	Description	Data Type	Required	Range
`model`	The model to use for video generation. Seedance 2.0 is for maximum quality, while Seedance 2.0 Fast is optimized for speed. Selecting a model will reveal additional inputs for `prompt`, `resolution`, `ratio`, `duration`, and `generate_audio`.	COMBO	Yes	`"Seedance 2.0"` `"Seedance 2.0 Fast"`
`first_frame`	The image to use as the first frame of the video.	IMAGE	No	-
`last_frame`	The image to use as the last frame of the video.	IMAGE	No	-
`first_frame_asset_id`	A Seedance asset_id to use as the first frame. This cannot be used at the same time as the `first_frame` image input. Default is an empty string.	STRING	No	-
`last_frame_asset_id`	A Seedance asset_id to use as the last frame. This cannot be used at the same time as the `last_frame` image input. Default is an empty string.	STRING	No	-
`seed`	A seed value. Changing this seed will cause the node to re-run, but the results are non-deterministic. Default is 0.	INT	No	0 to 2147483647
`watermark`	Whether to add a watermark to the generated video. Default is False.	BOOLEAN	No	-

Parameter Constraints:

You must provide either a first_frame image or a first_frame_asset_id. Providing both will cause an error.
You cannot provide both a last_frame image and a last_frame_asset_id for the same frame.
The model input is a dynamic combo. After selecting a model, you must also fill in the revealed prompt field (a text description) and configure the other revealed parameters (resolution, ratio, duration, generate_audio).

Outputs

Output Name	Description	Data Type
`output`	The generated video.	VIDEO

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Inputs

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