Vidu Q3

The newer, faster member of the Vidu family, exposed as a ComfyUI node that runs entirely on Civitai's cloud. No local GPU, no model files - you prompt, the job renders on Civitai's fleet, and the clip lands back in your graph as a native VIDEO socket. It's part of the official civitai-comfy-nodes pack and billed in Buzz like the rest of it.

Where the older Vidu node is about start-and-end-frame choreography, Vidu Q3 is about options. It's the most resolution-rich video node in this pack, with four quality tiers, a turbo toggle, built-in audio, and a generous duration range. If you want to tune the render rather than the choreography, this is the Vidu you want.

The inputs that matter

Only prompt is required. The useful dials:

• resolution - 360p, 540p, 720p, or 1080p. The full ladder, and the practical workflow is: iterate at 540p, do the keeper at 1080p. Q3's price scales with this.
• turbo - off by default. A real speed toggle: faster queue and render at some quality cost. Turn it on for drafts, off for finals.
• duration - 1 to 16 seconds, default 5. The longest range of any Vidu node.
• enable_audio - on by default. Q3 generates audio with the clip; flip it off if you're adding sound later and want to trim the bill.
• aspect_ratio - 16:9, 9:16, 1:1, 4:3, 3:4, or empty for default.
• images - wire a LoadImage in for image-to-video.
• seed - set to lock a result.
• api_config - auth.

Outputs

The pack's standard trio: video (VIDEO) into a Save Video / preview node, workflow_id (STRING) to track the job in the Civitai sidebar, raw_json (STRING) for the response and per-run cost.

Install and auth

One-time, pack-wide. ComfyUI Manager → search Civitai Comfy Nodes → install, restart:

cd ComfyUI/custom_nodes
git clone https://github.com/civitai/civitai-comfy-nodes.git
pip install -r civitai-comfy-nodes/requirements.txt   # just `requests`

Auth: Civitai Auth node, CIVITAI_API_TOKEN (headless-friendly), or sidebar sign-in.

Troubleshooting and takes

• Audio where you didn't ask for it. enable_audio defaults on. If you expected a silent clip, that's the checkbox.
• Duration is the cost lever. 16 seconds at 1080p with audio is the expensive corner of this node. Long clips also queue longer - and this pack launched June 2026 into Civitai's GPU crunch, so early users saw real waits and the occasional timeout. Default timeout is 30 minutes; raise it via Civitai Auth's timeout_minutes or CIVITAI_COMFY_TIMEOUT.
• Turbo looks different. It's not just faster; quality drops. Compare the same seed with turbo on and off before you judge the model.
• Same filter as the web generator. Vidu's content policy applies at the model. A refusal is the engine saying no.
• Early preview. Generated nodes "may change without notice," so re-check the fields after a pack update - resolution and duration lists are exactly the sort of thing Civitai expands.

Reach for Q3 when you want a Vidu clip with actual render control. Need start-to-end choreography instead? The plain Vidu node in this pack has the end_source_image input.