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Try HappyHorse 1.1 Reference to Video reference-to-video online. Use reference images to guide subjects, style, and scenes, then review pricing, prompts, and POST /v1/tasks API code.

Provider: HappyHorse

Category: video generation

Endpoint: /v1/tasks

Status: Available

Cost: See live page pricing

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HappyHorse 1.1 Reference to Video

New
by HappyHorseVideo

Alibaba HappyHorse 1.1 reference-to-video: generate video from up to 9 reference images while keeping subject, scene, and style consistent, native audio.

Pricing

Standard Usage

420 Credits/ s

Input

0 / 5000
5s
3s1-second steps15s

Choose 3-15 seconds in 1-second steps

More parameters

Upload assets

Preview after upload
0/9

1-9 reference image URLs. JPEG/PNG/WEBP, shortest side >= 400px, <= 20MB each

Estimated cost2,100 Credits420 Credits / s × 5s × 1080p

Output

Ready for generation

Configure your parameters and click "Run" to see the output here.

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About HappyHorse 1.1 Reference to Video

HappyHorse 1.1 Reference to Video uses one or more reference images to guide recognizable subjects, style, and scene details across a generated video.

The Playground and API use model ID happyhorse-1.1/reference-to-video. Assign a clear subject, style, or scene role to each reference image; they are not first or last frames.

Provider
HappyHorse
Task
Reference to video
Input
1–9 input images
Starting price
320 Credits / second

Model specifications

These specifications reflect the current HiAPI HappyHorse 1.1 Reference to Video request contract. Reference images guide subjects, style, and scene details; they are not endpoint frames.

Image input mode
1–9 input images
Duration
3–15s
Resolution
720p1080p
Aspect ratio
16:99:163:44:34:55:41:19:2121:9
Other references
No additional reference media
Output and audio
MP4Video output; audio follows the route contract
Model ID
happyhorse-1.1/reference-to-video
API protocol
POST /v1/tasksAsync

Starting price is 320 Credits / second.

How to use HappyHorse 1.1 Reference to Video

Start with a clear input image and a short clip, then increase duration after subject and motion are stable.

Subject
Style

HappyHorse 1.1 Reference to Video API quickstart

This is a minimal asynchronous reference-image-to-video request. Use the API docs for callbacks, task retrieval, reference limits, and error handling.

curl -X POST "https://api.hiapi.ai/v1/tasks" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "happyhorse-1.1/reference-to-video",
  "input": {
    "prompt": "Slow cinematic camera movement, preserve the subject and composition, coherent natural motion.",
    "reference_image": [
      "https://example.com/source.jpg"
    ],
    "duration": 3,
    "resolution": "720p",
    "aspect_ratio": "16:9"
  }
}'
The create request returns a taskId; retrieve the result asynchronously.Open full API docs
Need to compare models and billing tiers?View live pricing for all models

Frequently asked questions

Does HappyHorse 1.1 Reference to Video require an input image?

Yes. happyhorse-1.1/reference-to-video is a reference-to-video route. Reference images constrain subjects, style, and scene details while the prompt directs motion, camera, and environmental change.

Which durations and resolutions does HappyHorse 1.1 Reference to Video support?

The current HiAPI contract supports 3–15s at 720p or 1080p. Check the page controls and API docs for the current options.

How is HappyHorse 1.1 Reference to Video billed?

Billing follows output duration and the selected tier. The page follows the global display unit, while the successful task record contains the final charge.

How can I improve subject consistency?

Use a clear, unobstructed source with a complete composition. Describe the main action and camera first, then name the appearance, material, and background relationships that must remain stable. Validate a short clip first.

Scene
Up to 9
01

Prepare references with clear roles

Choose 1–9 subject, style, or scene references without redundant or conflicting guidance. The images do not need to match the first or last video frame.

Reference roles
Camera
Constraints
02

Assign reference roles and motion

State what each reference contributes, then describe subject motion, camera behavior, and the identity or style details that must remain stable.

Playground · 3s
POST /v1/tasks
03

Validate a short run, then add complexity

Start at 3 seconds with a small reference set, then increase duration or references after identity stays stable, or create the production task with happyhorse-1.1/reference-to-video.