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Try HappyHorse 1.1 Image to Video online. Animate a source image, review supported durations and resolutions, copy prompts, pricing, 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 Image to Video

New
by HappyHorseVideo

Alibaba HappyHorse 1.1 image-to-video: drive generation from a first frame while keeping subject and style consistent, native audio, 720p/1080p.

Pricing

Standard Usage

420 Credits/ s

Input

0 / 5000
5s
3s1-second steps15s

Choose 3-15 seconds in 1-second steps

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 Image to Video

HappyHorse 1.1 Image to Video turns a source image into a continuous video shot while preserving recognizable subject details.

The Playground and API use model ID happyhorse-1.1/image-to-video. Keep image guidance and motion instructions in the same request.

Provider
HappyHorse
Task
Image to video
Input
One required input image
Starting price
320 Credits / second

Model specifications

These specifications reflect the current HiAPI HappyHorse 1.1 Image to Video request contract. Endpoint frames and multimodal references are separate input modes and should not be mixed.

Image input mode
One required input image
Duration
3–15s
Resolution
720p1080p
Other references
No additional reference media
Output and audio
MP4Video output; audio follows the route contract
Model ID
happyhorse-1.1/image-to-video
API protocol
POST /v1/tasksAsync

Starting price is 320 Credits / second.

How to use HappyHorse 1.1 Image to Video

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

First
Last
1 + optional 1
01

Prepare a first frame and optional endpoint

HappyHorse 1.1 Image to Video API quickstart

This is a minimal asynchronous first/last-frame 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/image-to-video",
  "input": {
    "prompt": "Slow cinematic camera movement, preserve the subject and composition, coherent natural motion.",
    "image_urls": [
      "https://example.com/source.jpg"
    ],
    "duration": 3,
    "resolution": "720p"
  }
}'
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 Image to Video require an input image?

Yes. happyhorse-1.1/image-to-video is an image-to-video route. The image establishes the subject and opening composition; the prompt directs motion, camera, and environmental change.

Which durations and resolutions does HappyHorse 1.1 Image 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 Image 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.

The first frame defines subject, composition, and shape. Add a matching last frame only when the ending state must be fixed, leaving room for the intended motion.

Transition
Camera
Audio
02

Direct the transition, camera, and sound

Write the middle process in time order, state whether the camera is locked, preserve stable details, and place sound cues next to their matching events.

Playground · 3s
POST /v1/tasks
03

Validate a short run, then extend

Start at 3 seconds to inspect endpoint continuity and subject stability, then increase duration or create the production task with happyhorse-1.1/image-to-video.