Veo 3.1 ComfyUI Nodes

June 2, 2026 · View on GitHub

ComfyUI custom nodes for generating videos with Google's Veo 3.1 model via the MuAPI platform.

veo4-video-generator — Ready-made Next.js SaaS for Veo — no ComfyUI needed
Veo-4-API — Python wrapper for Veo 4 API — use the latest Veo model in scripts
muapi-comfyui — ComfyUI nodes for 100+ MuAPI models including Veo

Nodes

Node	Description
🎬 Veo 3.1 Text to Video	Generate 8-second video from a text prompt
🎬 Veo 3.1 Image to Video	Animate a static image; optionally anchor the last frame
🎬 Veo 3.1 Reference to Video	Generate video guided by up to 4 reference images
🎬 Veo 3.1 Extend Video	Continue a previous generation with a new prompt
🎬 Veo 3.1 4K Upscale	Upscale any previous Veo 3.1 generation to 4K
🎬 Veo 3.1 Save Video	Download & save generated video; returns frames tensor

All nodes live in the 🎬 Veo 3.1 category in the ComfyUI node menu.

Available Models

Text to Video

Model	Speed	Quality
`veo3.1-text-to-video`	Standard	Highest, with audio
`veo3.1-fast-text-to-video`	Fast	Good
`veo3.1-lite-text-to-video`	Fast	Lightweight

Image to Video

Model	Speed	Quality
`veo3.1-image-to-video`	Standard	Highest, with audio
`veo3.1-fast-image-to-video`	Fast	Good
`veo3.1-lite-image-to-video`	Fast	Lightweight

Other Variants

veo3.1-reference-to-video — multi-image reference generation
veo3.1-extend-video — extend a previous generation
veo3.1-4k-video — upscale a previous generation to 4K

All models output 8-second videos (Veo 3.1 fixed duration).

Installation

cd ComfyUI/custom_nodes
git clone https://github.com/YOUR_USERNAME/muapi-veo31-comfyui
pip install -r muapi-veo31-comfyui/requirements.txt

Restart ComfyUI.

Setup

Get an API key from MuAPI
Paste it into the api_key field of any Veo 3.1 node

Parameters

Common

Parameter	Description
`api_key`	Your MuAPI API key
`prompt`	Text description of the video
`aspect_ratio`	`16:9` or `9:16`
`resolution`	`720p`, `1080p`, or `4k`
`extra_params_json`	Any additional model parameters as JSON

Image to Video extras

Parameter	Description
`image`	Start frame (IMAGE tensor)
`last_image`	Optional end frame for first–last mode

Reference to Video extras

Parameter	Description
`image_1` … `image_4`	Reference images (up to 4)
`generate_audio`	Whether to generate audio (default: true)

Extend / 4K Upscale

Parameter	Description
`request_id`	`request_id` output from a previous generation node

Example Workflows

File	Description
`MuAPI_Veo31_T2V_Example.json`	Text → Video → Save
`MuAPI_Veo31_I2V_Example.json`	Image → Video → Save
`MuAPI_Veo31_Reference_Example.json`	2 reference images → Video → Save

Load any workflow via ComfyUI → Load (drag & drop the JSON).

Chaining nodes

Veo31TextToVideo
  └─ video_url  ──► Veo31VideoSaver ──► frames ──► PreviewImage
  └─ first_frame──► PreviewImage
  └─ request_id ──► Veo31ExtendVideo
                       └─ request_id ──► Veo314KUpscale

Requirements

Python 3.8+
ComfyUI (any recent version)
requests, Pillow, numpy, torch, opencv-python

License

MIT