Vidu Q3 Pro Start End to Video | Fast Image-to-Video API

Vidu Q3 Pro Start-End-to-Video

Vidu Q3 Pro Start-End-to-Video generates videos with precise control over both the first and last frames. Provide a start image, an end image, and a text prompt, and the model creates a smooth, coherent transition between the two visual states. It supports multiple resolutions, motion control, and optional audio generation with background music.

Why Choose This?

Start and end frame control Define both the opening and ending visuals for more precise and predictable video transitions.
Smooth interpolation Generate natural, fluid motion between two reference frames.
Fast pro-speed generation Q3 Pro is built for rapid iteration, testing, and content prototyping.
Multiple resolution options Choose from 540p, 720p, or 1080p depending on your quality and budget needs.
Optional audio generation Generate synchronized audio and optional background music for richer outputs.
Motion intensity control Adjust movement_amplitude to control how subtle or dramatic the transition feels.

Parameters

Parameter	Required	Description
prompt	Yes	Text description of the desired motion, action, and transition.
image	Yes	Start frame image (URL or upload).
last_image	Yes	End frame image (URL or upload).
duration	No	Video length in seconds. Supports `1–16` seconds for Q3 Pro. Default: `5`.
resolution	No	Output resolution: `540p`, `720p`, or `1080p`. Default: `720p`.
bgm	No	Whether to include background music. Default: enabled.
generate_audio	No	Whether to generate synchronized audio. Default: enabled.
movement_amplitude	No	Controls the intensity of motion in the transition. Default: `auto`.
seed	No	Random seed for reproducible results. Default: `-1`.

How to Use

Upload your start image — provide the first frame of the video.
Upload your end image — provide the last frame of the video.
Write your prompt — describe the motion, action, and transition between the two frames.
Set duration — choose how long you want the video to be.
Set resolution — use 540p for speed, 720p for balance, or 1080p for quality.
Adjust motion (optional) — control movement intensity with movement_amplitude.
Enable audio (optional) — toggle generate_audio and bgm if you want sound in the result.
Submit — run the model and download your video.

Example Prompt

A cinematic transformation from a clean product photo to a glowing premium hero shot, with subtle camera push-in, soft reflections, and smooth visual motion between the two states.

Pricing

Pricing is based on duration and resolution.

Resolution	Cost per Second
540p	$0.05
720p	$0.125
1080p	$0.15

Example Costs

Resolution	5s	10s	16s
540p	$0.25	$0.50	$0.80
720p	$0.625	$1.25	$2.00
1080p	$0.75	$1.50	$2.40

Billing Rules

Pricing scales linearly with duration
Higher resolutions cost more per second
movement_amplitude, generate_audio, bgm, and seed do not affect pricing
Off-peak pricing may be available separately through the provider

Best Use Cases

Scene transitions — Create smooth cinematic transitions between two visual states.
Product morphing — Show product transformations, feature changes, or visual upgrades.
Before/after content — Generate engaging videos that compare two different looks or conditions.
Character animation — Animate a subject moving from one pose or mood to another.
Rapid prototyping — Quickly test visual transition ideas with fast generation speed.

Pro Tips

Use images with similar composition for smoother transitions.
Describe the motion happening between the two frames, not just the static start and end states.
Start with shorter durations like 5s to validate the transition before generating longer clips.
Use a fixed seed when you want more consistent variations.
Lower movement_amplitude for subtle transitions, and raise it for more dramatic changes.

Notes

prompt, image, and last_image are all required.
duration supports 1–16 seconds for Q3 Pro.
seed = -1 means a random seed will be used.
Native Vidu documentation uses the audio flag, while this WaveSpeed schema exposes generate_audio and bgm.
Higher resolution increases both output quality and total cost.

Related Models

Vidu Q3 Start-End-to-Video — Higher-quality start-end video generation at premium pricing.
Vidu Q3 Pro Text-to-Video — Generate videos directly from text prompts without reference images.
Vidu Q3 Pro Image-to-Video — Animate a single reference image into a video with Q3 Pro speed.

Q3 Pro Start End To Video API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/vidu/q3-pro/start-end-to-video with your input as JSON. The endpoint returns a prediction id; poll the prediction endpoint until status flips to completed, then read the output URL from data.outputs[0]. Examples for Q3 Pro Start End To Video below.

HTTP example

# Submit the prediction
curl -X POST "https://api.wavespeed.ai/api/v3/vidu/q3-pro/start-end-to-video" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d '{
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "image": "https://example.com/your-input.jpg",
    "duration": 5,
    "resolution": "720p",
    "bgm": true,
    "generate_audio": true,
    "movement_amplitude": "auto",
    "seed": -1
}'

# Response includes a prediction id. Poll for the result:
curl -X GET "https://api.wavespeed.ai/api/v3/predictions/{request_id}/result" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY"

# When status is "completed", read the output from data.outputs[0].

Node.js example

// npm install wavespeed
const WaveSpeed = require('wavespeed');

const client = new WaveSpeed(); // reads WAVESPEED_API_KEY from env

const result = await client.run("vidu/q3-pro/start-end-to-video", {
        "prompt": "A cinematic shot of a city at sunset, soft golden light",
        "image": "https://example.com/your-input.jpg",
        "duration": 5,
        "resolution": "720p",
        "bgm": true,
        "generate_audio": true,
        "movement_amplitude": "auto",
        "seed": -1
});

console.log(result.outputs[0]); // → URL of the generated output

Python example

# pip install wavespeed
import wavespeed

output = wavespeed.run(
    "vidu/q3-pro/start-end-to-video",
    {
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "image": "https://example.com/your-input.jpg",
    "duration": 5,
    "resolution": "720p",
    "bgm": true,
    "generate_audio": true,
    "movement_amplitude": "auto",
    "seed": -1
}
)

print(output["outputs"][0])  # → URL of the generated output

Q3 Pro Start End To Video API — Frequently asked questions

What is the Q3 Pro Start End To Video API?

Q3 Pro Start End To Video is a Vidu model for video generation from images, exposed as a REST API on WaveSpeedAI. Vidu Q3 Pro Start-End-to-Video creates smooth transitions between two keyframes with viduq3-pro (1–16s). Billing follows Vidu's published Q3-pro per-second rates by resolution. Ready-to-use REST inference API on WaveSpeed. You can call it programmatically or try it from the playground above.

How do I call the Q3 Pro Start End To Video API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID; poll the prediction endpoint until status flips to "completed", then read the output URL from the result. The playground generates a ready-to-paste code sample in Python, JavaScript, or cURL for whatever inputs you've set. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/vidu/vidu-q3-pro-start-end-to-video.

How much does Q3 Pro Start End To Video cost per run?

Q3 Pro Start End To Video starts at $0.25 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Q3 Pro Start End To Video accept?

Key inputs: `prompt`, `image`, `resolution`, `duration`, `seed`, `bgm`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/vidu/vidu-q3-pro-start-end-to-video.

How do I get started with the Q3 Pro Start End To Video API?

Sign up for a free WaveSpeedAI account to claim starter credits, copy your API key from /accesskey, then call the endpoint shown in the API tab of the playground. The playground also auto-generates a code sample in Python, JavaScript, or cURL for the parameters you've set.

Can I use Q3 Pro Start End To Video outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (Vidu). The license summary appears on the model card above; see WaveSpeedAI's Terms of Service for platform-level conditions.

ExamplesView all

Related Models

README

Vidu Q3 Pro Start-End-to-Video

Why Choose This?

Parameters

How to Use

Example Prompt

Pricing

Example Costs

Billing Rules

Best Use Cases

Pro Tips

Notes

Related Models

Q3 Pro Start End To Video API — Quick start

Q3 Pro Start End To Video API — Frequently asked questions