seedinteger
Random seed for reproducibility (0-2147483647).
Happy Horse 1.1 Image to Video
alibaba/happy-horse/1.1/image-to-videoHappy Horse 1.1 by Alibaba - animate still images into dynamic videos with AI. Transform photos into cinematic clips with natural motion, camera movement, and optional audio generation.
Try the model
Playground
Input
Optional text prompt guiding the animation. Max 2500 characters.
PNG, JPEG, WebP, or GIF · 20 MiB maximum
URL of the first frame image. Formats: JPEG, JPG, PNG, BMP, WEBP. Dimensions must be at least 300px. Aspect ratio must be between 1:2.5 and 2.5:1. Max 20 MB.
This field is required.
Additional Settings More
Customize your input with more control.
Output video resolution tier. Allowed values: 480p, 720p, 1080p.
Output video duration in seconds (3-15). Allowed values: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15.
Random seed for reproducibility (0-2147483647).
ResultExample
What would you like to do next?
Examples
Select an example to load its inputs and result into the playground.
- Open result ↗
Input
{ "duration": 3, "image": "https://static.sandbase.ai/examples/a73ed7f8-ca7d-4049-9722-d0434d557702/input/4b94aaa6-51ab-4e29-9068-274920cea45e.png", "prompt": "The black cat slowly looks up", "resolution": "720p" }
Human preference
Arena
Elo ratings from blind side-by-side votes, compared with other image and video models.
Rankings sourced from Artificial Analysis Arena
- Leaderboard
- Image to Video
- Rank
- #10 of 29
- Elo
- 1024 ±19
- Gap to #1
- −106
Image-to-video arena (silent): people pick the better of two clips animated from the same image, without seeing the model names; audio is not judged.
- #5Dreamina Seedance 2.01089±21
- #6Wan 3.01086±20
- #7FLUX 3 Max1058±19
- #8Grok Imagine Video 1.51054±19
- #9FLUX 31036±19
- #10HappyHorse-1.11024±19
- #11Gemini Omni Flash 1.11022±19
- #12Kling 3.0 Omni 1080p (Pro)1020±19
- #13HappyHorse-1.01014±19
- #14Grok Imagine Video 1.5 Lite1003±19
Happy Horse 1.1 Image to Video
Animate a picture with Happy Horse 1.1. image becomes the first frame and the prompt directs the action and camera over 3–15 seconds.
Fields
| Field | Type | Default | Notes |
|---|---|---|---|
prompt | string, required | — | Text instruction. |
image | image URL, required | — | First frame. JPEG, PNG, or WebP URL. |
resolution | 480p / 720p / 1080p | 720p | Sets the per-second rate. |
duration | 3–15 | 5 | Output length in seconds. |
seed | integer | random | Fix it to compare prompt changes. |
Billing
You pay for output seconds: $0.07 at 480p, $0.14 at 720p, and $0.18 at 1080p, Alibaba's list price.
| Output | 480p | 720p | 1080p |
|---|---|---|---|
| 3s | $0.21 | $0.42 | $0.54 |
| 5s (default) | $0.35 | $0.70 | $0.90 |
| 10s | $0.70 | $1.40 | $1.80 |
| 15s | $1.05 | $2.10 | $2.70 |
Failed runs are not charged.
Prompting
- Describe what moves and how the camera behaves, not what is already visible.
- Draft at 480p, then rerun the chosen take at 1080p.
Limits
- The output follows the input image's aspect ratio.
Also on SandBase
Other Happy Horse endpoints: alibaba/happy-horse/1.1/text-to-video, alibaba/happy-horse/1.1/reference-to-video, alibaba/happy-horse/video-edit (edit an existing clip).
Start building
Send your first request
Submit this model through the SandBase Unified Run API.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/run" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "alibaba/happy-horse/1.1/image-to-video",
"image": "https://help-static-aliyun-doc.aliyuncs.com/file-manage-files/zh-CN/20250925/wpimhv/rap.png",
"prompt": "Bring the scene in the image to life.",
"duration": 5,
"resolution": "720p"
}
SANDBASE_JSON
)
run_id=$(printf '%s' "$result" | jq -r .id)
for attempt in $(seq 1 120); do
status=$(printf '%s' "$result" | jq -r .status)
case "$status" in completed|failed|timeout) break ;; esac
sleep 2
result=$(curl --fail-with-body --silent \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
"https://api.sandbase.ai/v1/run/$run_id")
done
status=$(printf '%s' "$result" | jq -r .status)
[ "$status" = completed ] || { echo "Generation ended: $status" >&2; exit 1; }
printf '%s\n' "$result"2. Authentication
Create a SandBase API key and set it in your server environment. All requests use Bearer authentication.
export SANDBASE_API_KEY="YOUR_API_KEY"Keep the key on your server. Do not expose it in browser code or commit it to a repository.
3. Queue
Submit a request
POST to /v1/run with this model ID and its inputs. The request example above includes submission and polling.
Fetch request status and result
Use the returned run ID to poll until the status is completed, failed or timeout. Read output only after completed.
curl "https://api.sandbase.ai/v1/run/$RUN_ID" \
-H "Authorization: Bearer $SANDBASE_API_KEY"4. Files
Hosted files
Pass a publicly accessible file URL in the model’s image, video or audio field. Supported formats and limits are shown beside each Playground input.
Uploading images
Use the upload or replace control on supported image fields in the Playground. Video URL fields accept a hosted driving video; they do not imply video-upload support.
5. Schema
Input
imagestringrequired
URL of the first frame image. Formats: JPEG, JPG, PNG, BMP, WEBP. Dimensions must be at least 300px. Aspect ratio must be between 1:2.5 and 2.5:1. Max 20 MB.
promptstringrequired
Optional text prompt guiding the animation. Max 2500 characters.
durationinteger
Output video duration in seconds (3-15).
Default: 5
Possible values: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
resolutionstring
Output video resolution tier.
Default: "720p"
Possible values: "480p", "720p", "1080p"
{
"model": "alibaba/happy-horse/1.1/image-to-video",
"image": "https://help-static-aliyun-doc.aliyuncs.com/file-manage-files/zh-CN/20250925/wpimhv/rap.png",
"prompt": "Bring the scene in the image to life.",
"duration": 5,
"resolution": "720p"
}Output
A completed run exposes its result in output. The following is the model’s saved example, not a new generation.
[
{
"poster": "https://static.sandbase.ai/examples/posters/7c8c853059539b5df645.jpg",
"source": "Self organization completed prediction",
"source_url": "https://www.sandbase.ai",
"url": "https://static.sandbase.ai/examples/a73ed7f8-ca7d-4049-9722-d0434d557702/output/a504361d-7843-47d6-89c6-ad2b5e369e5d.mp4"
}
]