Vidu Q3 Pro Start End 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

1. Upload your start image — provide the first frame of the video.
2. Upload your end image — provide the last frame of the video.
3. Write your prompt — describe the motion, action, and transition between the two frames.
4. Set duration — choose how long you want the video to be.
5. Set resolution — use 540p for speed, 720p for balance, or 1080p for quality.
6. Adjust motion (optional) — control movement intensity with movement_amplitude.
7. Enable audio (optional) — toggle generate_audio and bgm if you want sound in the result.
8. 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.