Generate video with HappyHorse 1.1
Alibaba HappyHorse 1.1 — highly realistic dynamic rendering. Text-to-video; image-to-video (start frame only); and reference-images-to-video (up to 9 images for subject-consistent generation). 720p or 1080p, priced per resolution (see resolution_pricing in GET /v1/models); 4–15 seconds. Audio is determined by the model (no toggle). No video-edit mode.
Asynchronous. Returns a job id (the video is not in this response). Poll GET /v1/videos/{id} until status is succeeded — the video URL is in that response’s video_url.
Authorizations
API key as a bearer token: Authorization: Bearer bpx_live_xxx
Body
Text description of the video.
Aspect ratio. Ignored when a start image already sets the frame.
16:9, 9:16, 1:1, 4:3, 3:4 Optional start frame for image-to-video. Provide a public image URL, a data URI, raw base64, or an uploaded-file URL from POST /v1/uploads. Omit for text-to-video. Can't be combined with reference_images.
Video length in seconds (4–15).
4 <= x <= 15Optional reference images (1–9) for subject-consistent reference-to-video. Each item is a public image URL, a data URI, raw base64, or an uploaded-file URL from POST /v1/uploads. Can't be combined with image (the start frame).
9Output resolution. Pricing varies by resolution — see resolution_pricing in GET /v1/models.
720p, 1080p