MinimaxHailuo03MaxExtendVideoNode - ComfyUI Built-in Node Documentation - ComfyUI

This node continues a video with new footage guided by a prompt and optional audio references. The source video is uploaded, the continuation is generated, and the result is returned either as the whole re-rendered video or as the new footage alone. Two models are available: “MiniMax H3 Max” and “MiniMax H3 Max Turbo”, which is cheaper per unit.

Inputs

Common Inputs

Parameter	Description	Data Type	Required	Range
`model`	Model to use for continuing the video. Both models expose the same inputs below.	DYNAMIC_COMBO	Yes	”MiniMax H3 Max" "MiniMax H3 Max Turbo”

Model Inputs

These inputs apply to both models.

Parameter	Description	Data Type	Required	Range
`video`	Video to extend, 1.625 to 60 seconds long, up to 50 MB. The aspect ratio must be between 0.4 and 2.5.	VIDEO	Yes	1.625 to 60 seconds
`prompt`	What happens next. Describe the continuation, not the source. Refer to the reference audios as `@Audio1`..`@Audio3`, for example “@Audio1 for the voice”.	STRING	Yes	1 to 50000 characters
`reference_audios`	Growable slot: connect up to 3 audio clips (`audio_1`…`audio_3`) for the new footage, at least 2 seconds each and 14.5 seconds in total.	AUDIO	No	0 to 3 clips
`duration`	Seconds of new footage to add (default: 5).	INT	Yes	1 to 15
`resolution`	Resolution of the output video (default: “768P”).	COMBO	Yes	”480P" "768P" "1080P" "2K”
`aspect_ratio`	Aspect ratio of the output. “auto” follows the source video; the other values crop the video to the selected ratio (default: “auto”).	COMBO	Yes	”auto" "21:9" "16:9" "4:3" "1:1" "3:4" "9:16”
`output`	”extended” returns the whole video, re-rendered at the selected resolution, with the new footage. “continuation” returns only the new footage, starting with a 1.6 second repeat of the source ending (default: “extended”).	COMBO	Yes	”extended" "continuation”
`prompt_expansion`	Rewrite the prompt using the source video to keep the continuation consistent. Turn it off to get reproducible results for the same seed (default: true).	BOOLEAN	No	true false
`seed`	Random seed. The same request with the same seed gives similar, but not guaranteed identical, results (default: 42).	INT	Yes	0 to 4294967295

Parameter Constraints

At 2K resolution the “extended” output is limited to 45 seconds in total, source video plus new footage. Use “continuation” or a lower resolution for longer clips.
Each reference audio clip must be at least 2 seconds long, and all of them together cannot exceed 14.5 seconds.

Outputs

Output Name	Description	Data Type
`video`	The extended video or the new footage alone, depending on the `output` setting.	VIDEO

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