Vidu Q3 Turbo Start End To Video (Official Edition)

Here's the odd one out: on the Official Turbo first-last-frame node, the prompt field is optional. Most Vidu nodes make you type something; this one is happy to just interpolate between your two frames on its own. If the motion between your anchors is obvious, you can let it run silent and free - literally no prompt needed.

What this node does

BizyTRD_Vidu_Q3_Turbo_Official_FLF2V_API animates between an image (start) and last_frame_image (end) on the Turbo tier, in the full Official edition - so you get seed, is_rec, and the prompt-optional quirk. The tooltip on the end frame adds the familiar constraint: the first-to-last aspect ratio should sit between 0.8 and 1.25.

Cloud execution like the whole pack: flip BizyAirPlus ON, Turbo runs on BizyAir's servers, and ComfyUI uploads your frames and streams back the clip.

The inputs that matter

• image / last_frame_image - the bookends, both required. Keep their aspect ratios within that 0.8–1.25 band.
• prompt - optional here, but not useless: leave it empty and the model just connects the frames; write one and you steer the motion ("the character looks back as she leaves").
• resolution - 720P default.
• duration - 1–16 seconds.
• audio - on by default: Q3 syncs dialogue and SFX.
• seed - 0 default, -1 = random.
• aspect_ratio - 16:9 default.
• is_rec - recommendation prompt at an extra 10 credits per task. The cheaper relative of the 320-coin feature on the Pro FLF node, but still a paid convenience - leave off unless you want the system to rewrite your prompt.

Shared BizyAir options: api_config (endpoint/key override) and skip_error (placeholder instead of abort).

Outputs

• video - the finished clip; wire into preview or save.
• request_id - cloud task ID.
• urls - hosted result URLs.

How to install

cd /path/to/ComfyUI/custom_nodes
git clone https://github.com/siliconflow/BizyAirPlus.git
cd BizyAirPlus
python -m pip install -r requirements.txt

Restart ComfyUI (or install "BizyAirPlus" via ComfyUI Manager). Deps: bizyair-cloudberry and bizytrd; no model files. First run: account at bizyair.ai → API key → enter when the ON button prompts (or Settings > BizyAirPlus; key at ~/.BizyAirPlus/apikey.ini).

Where people get burned

The prompt-optional design trips people in the opposite direction: they write a prompt and then wonder why the model seems to ignore parts of it. For complex motion, put the steering words in; for simple transitions, trust the frames. And remember the Turbo trade - FLF bridges come out stiffer than Pro on complex motion, so for hero shots with a physical transition, Pro is the safer bet.

Pack note: BizyAir's malware reputation is leftover from a 2025 ComfyUI Manager auto-install bug - legitimate SiliconFlow pack, removed properly with pip uninstall bizyair-cloudberry bizytrd.