Flux3MaxTextToVideoNode - ComfyUI Built-in Node Documentation - ComfyUI

FLUX 3 Max Text to Video generates a video with synchronized audio from a text prompt. The prompt is interpreted and expanded by FLUX 3 Max before rendering, the node waits for the render to finish, and the finished clip is returned.

Inputs

Parameter	Description	Data Type	Required	Range
`prompt`	What the clip should show, in plain language. Describe ambient sound, music and speech separately for layered audio (default: empty).	STRING	Yes	Multiline text
`aspect_ratio`	Output aspect ratio. `"auto"` is 16:9 for text prompts (default: `"auto"`).	COMBO	Yes	`"auto"` `"21:9"` `"2:1"` `"16:9"` `"4:3"` `"1:1"` `"3:4"` `"9:16"`
`duration`	Clip length in seconds (default: `"5"`).	COMBO	Yes	`"5"` `"6"` `"7"` `"8"` `"9"` `"10"` `"11"` `"12"` `"13"` `"14"` `"15"` `"16"` `"17"` `"18"` `"19"` `"20"`
`resolution`	Output resolution (default: `"720p"`).	COMBO	Yes	`"720p"` `"1080p"`
`reasoning_level`	How much the model reasons about and expands the prompt before generating. `"high"` takes longer; the price is the same (default: `"high"`).	COMBO	Yes	`"low"` `"high"`
`generate_audio`	Generate synchronized audio. Off produces a video with no audio track (default: true).	BOOLEAN	Yes	`true` `false`
`seed`	Seed controlling whether the node re-runs. Results are non-deterministic regardless of this value (default: 42).	INT	Yes	0 to 2147483646

Note: prompt must contain at least one character. The displayed price is based on resolution and duration: 720p is charged at $0.060775 per second and 1080p at $0.103675 per second until November 7, 2026, and at $0.2431 and $0.4147 per second after that date. The total estimated cost for the clip is shown in the UI.

Outputs

Output Name	Description	Data Type
`video`	The generated video clip, with synchronized audio when `generate_audio` is enabled.	VIDEO

This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! Edit on GitHub

Source fingerprint (SHA-256): 6dcb11e7aa7f1592169ede449c4092740db43e635501205eba02a066f03a967f