happyhorse-1.0-i2v is HappyHorse 1.0's first-frame image-to-video model, using an image to define the starting point of the scene and then combining it with a text description to generate dynamic clips. It focuses on realistic dynamic rendering and image-text semantic understanding, making it suitable for turning product images, character concept art, or scene visuals into video assets. When creating, first establish the composition, then describe the subject's actions, environmental changes, and camera movement.
Submit requests to the public API at api.acedata.cloud using the documented parameters, then use the results in your application.
Input parameters and result formats vary by service. Use the public API for this model and follow its guide for generation, task retrieval and editing operations.
Its native capability is positioned as video generation from image and text input; the duration, resolution, and task delivery methods here correspond to this platform's supported invocation scope.
The input image serves as the first frame of the video, allowing creation to begin with an already defined subject, background, and visual tone rather than rebuilding the entire scene with text. It is suitable for animating existing design assets; prepare an appropriate first frame first, then use prompts to supplement subsequent actions, making camera intent clearer.
The model combines image content and text semantics to generate video, emphasizing realistic motion and smooth, natural visuals. Prompts can be structured around what the subject does, how the environment changes, and how the camera moves, such as a person slowly turning their head, clothing swaying in the wind, or the camera moving forward. Avoid stacking contradictory actions.
Generation tasks can be submitted using async, and callback_url can also be configured to receive completed results. After an application saves task_id, it can retrieve the status and video link through task queries without requiring the user interface to keep waiting for the same request. Results also include information such as duration and resolution, facilitating asset archiving and subsequent processing.
Input a product image with a complete composition, describe a subtle camera push-in, dynamic background, or display action, and generate short video candidates for product presentation. First use 720P to validate the motion direction, then choose 1080P as needed for delivery; inspect label text, edges, and key visual details frame by frame before proceeding to editing and publishing.
Use a character design image or completed storyboard image as the first frame, supplement it with descriptions of actions such as turning, looking up, or walking, and create single-shot previsualization material. It is suitable for validating the visual effect of a static design after it enters motion, then allowing creators to select the action rhythm and camera direction, rather than replacing complete multi-shot continuity production.
Use indoor, architectural, or natural scene images as a starting point, describe clouds, wind, light and shadow, and slow camera movement to create atmospheric clips. When you want vertical or square videos, first prepare the first-frame image according to the target composition; the output aspect ratio will follow the image as closely as possible, so you should not rely on the ratio parameter to reorganize the frame.
If the product, person, or scene is already defined in an image, choose happyhorse-1.0-i2v to start dynamic generation from the first frame. If you only have a text concept, choose the corresponding t2v model; if multiple images are needed to jointly constrain the character or style, choose the r2v model; if an existing video needs modification, use video-edit rather than only changing the action of this model.
happyhorse-1.0-i2v and happyhorse-1.1-i2v are different version call IDs. If you need to continue using 1.0 project configurations or compare against existing assets, explicitly specify this model; when trying 1.1, it is recommended to compare motion, details, and usable clips using the same first frame and prompt before deciding which version to use, rather than judging results by the version number alone.
Prepare a single first-frame image_url and use prompt to describe the action; keep the aspect ratio as close as possible to the input image, with no need to pass ratio.
Set model=happyhorse-1.0-i2v and action=image_to_video for /happyhorse/videos. Choose an integer duration of 3–15 seconds and 720P or 1080P, using the input image to determine the starting composition.
Use async or callback_url to integrate background tasks, save task_id and query /happyhorse/tasks; wait for succeeded before reading video_url, then check the person, motion, and audio.
Use the product image as the first frame, retain the bottle shape and packaging, let the background fabric sway gently in a breeze, and keep the camera stable without cuts.
Use image_to_video and image_url, and make the aspect ratio follow the input image as closely as possible; do not use ratio to forcibly alter the original composition.
When submitting a request to /happyhorse/videos, explicitly set model to happyhorse-1.0-i2v, action to image_to_video, and provide image_url. This directly specifies the version and task type, avoiding reliance on default values that may enter other generation modes.
In this model's image_to_video action, image_url corresponds to the video's first frame and determines the initial composition. It differs from multi-reference image generation; if multiple character or style images need to participate in creation together, choose the corresponding r2v model.
This action requires an image, while text can describe the desired motion. Describe the subject's action, environmental changes, and camera approach rather than repeatedly listing every element in the image. Start by testing one clear action, then gradually add details, making it easier to evaluate the generated result.
Prepare a first-frame image with a vertical composition, then submit an image-to-video task. The output aspect ratio will follow the image as closely as possible, so there is no need to pass ratio separately; if the position of people, products, or backgrounds is important, arrange the composition and negative space in the first frame beforehand.
After submitting with async, save the task_id, then query the task through /happyhorse/tasks; you can also use callback_url to receive completion notifications. Only after the task completes successfully should you use the returned video_url to retrieve the video; do not treat a successful submission as meaning the video has already been generated.
Choose a development approach or application suited to this model and follow its setup guide.
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SDK installation, authentication and examples↗TypeScript SDK Integration Guide
SDK installation, authentication and examples
↗This is only a basic call example. See the full docs for more parameters and advanced usage.
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