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FLUX 3 Max is Black Forest Labs’ video model on the FLUX 3 foundation, served through fal and available in ComfyUI as Partner Nodes. It generates a clip from a text prompt, or animates a set of still images into one continuous shot. The difference from the standard FLUX 3 video nodes is control over the timeline. Image to video takes 1 to 10 keyframe images: one image opens the clip, two become its first and last frame, and more are either spread evenly across the clip or pinned to the seconds you choose. Every run also produces synchronized audio, including ambience, speech, and sound effects. Both nodes are cloud API nodes. They need a Comfy account with credits, download no model, and bill per second of output; see Partner Node pricing for the rates.

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What FLUX 3 Max is good at

  • Keyframe control: place up to 10 images on the timeline and let the model fill in the motion between them
  • Native audio: every clip ships with synchronized ambience, speech, and effects, or you can turn the audio track off
  • Clips from 5 to 20 seconds: one generation covers a full shot instead of stitched segments
  • Prompt expansion: reasoning_level decides how much the model rewrites and plans the prompt before generating, at the same price either way
  • Flexible framing: 720p or 1080p at 24 fps, from 21:9 through 9:16, or auto to follow the input image

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Example outputs

Text to video from a single prompt, with synchronized audio: A three-shot sequence from one keyframe image, with hard cuts written into the prompt:
To use the Partner Nodes, you need to ensure that you are logged in properly and using a permitted network environment. Please refer to the Partner Nodes Overview section of the documentation to understand the specific requirements for using the Partner Nodes.
Make sure your ComfyUI is updated.Workflows in this guide can be found in the Workflow Templates. If you can’t find them in the template, your ComfyUI may be outdated.If nodes are missing when loading a workflow, possible reasons:
  1. You are not using the latest ComfyUI version (Nightly version)
  2. Some nodes failed to import at startup

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FLUX 3 Max text-to-video workflow

Describe the shot, choose a length, and run. Sound, motion, and camera behavior are generated together from the same prompt, so describe the audio you want in the same paragraph as the action.

Download Workflow

Download JSON or search “FLUX 3 Max: Text to Video” in Template Library
How to use
  1. Write the prompt: describe the scene, then the sound. Separate ambience, music, and speech so the audio layers do not compete.
  2. Set the clip: duration runs from 5 to 20 seconds, resolution is 720p or 1080p, and aspect_ratio defaults to auto.
  3. Leave reasoning_level on high for complex prompts with cuts or several subjects. It takes longer and costs the same as low.
  4. Run and save the result with SaveVideo.

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FLUX 3 Max image-to-video workflow

Turn stills into one moving shot. With a single image the clip opens on it and the model invents the rest of the action; with several, the images anchor the composition at points along the timeline.

Download Workflow

Download JSON or search “FLUX 3 Max: Image to Video” in Template Library
Input material

hovering_spaceship.png

Load into the first keyframe slot of the FLUX 3 Max Image to Video node
How to use
  1. Add the images: connect 1 to 10 images to the keyframes inputs, in playback order.
  2. Choose the placement: spread across the clip puts the first image at the start, the last at the end, and the rest evenly between. at times lets you pin each image to a second you type, comma-separated and increasing, such as 0, 2.5, 5.
  3. Describe the motion and the sound: the prompt tells the model how the scene should move and what it should sound like. Write cuts explicitly, as SHOT ONE, HARD CUT, SHOT TWO.
  4. Set the clip: duration, resolution, and aspect_ratio behave as in the text-to-video node.
  5. Run and save the result with SaveVideo.

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Node controls

Both nodes share these inputs: Image to video adds keyframes (1 to 10 images) and placement (spread across the clip or at times).

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Limits

  • A clip is 5 to 20 seconds at 24 fps. There is no continuation input on these nodes, so longer pieces are separate generations.
  • At most 10 keyframe images, and at least one.
  • With at times, give exactly one time per image, in increasing order, and keep the last time inside the clip.
  • Audio is generated with the video and cannot be edited separately before it comes back.
  • The seed does not make runs reproducible. Re-running the same graph gives a different result.

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Get started

  1. Update ComfyUI to the latest version
  2. Go to Template Library, search for FLUX 3 Max, and open either template