sandbase-ai/ai-avatar
Ai Avatar is sandbase-ai's image-to-video AI model. Bring static images to life with fluid animation, consistent character motion, and professional-grade video output.
PNG, JPEG, WebP, or GIF · 20 MiB maximum
Example output — click Run to generate your own
Send your first request
OpenAI-compatible endpoint with unified authentication and usage tracking.
https://api.sandbase.ai/v1/runsandbase-ai/ai-avatarInput Schema
6 parameters · 2 required · 4 optional
| Parameter | Type | Required | Description |
|---|---|---|---|
image | string | Required | URL of the input image. If the input image does not match the chosen aspect ratio, it is resized and center cropped. |
prompt | string | Required | The text prompt to guide video generation. |
seed | integer | Optional | Random seed for reproducibility. If None, a random seed is chosen. · Min: 0 · Max: 4294967295 · Default: 42 |
audio | string | Optional | The URL of the audio file. |
num_frames | integer | Optional | Number of frames to generate. Must be between 81 to 129 (inclusive). If the number of frames is greater than 81, the video will be generated with 1.25x more billing units. · Min: 41 · Max: 241 · Default: 145 |
resolution | string | Optional | Resolution of the video to generate. Must be either 480p or 720p. · Options: 480p, 720p · Default: "480p" 480p720p |
Output Schema
| Field | Type | Description |
|---|---|---|
id | string | Unique identifier for the generation task |
status | string | Task status: pending, running, completed, failed, timeout |
model | string | Model used for the generation |
outputs | array | Array of output items |
outputs[].url | string | URL of the generated artifact |
outputs[].content_type | string | MIME type (e.g. image/png, video/mp4) |
error | object | null | Error details if failed, null on success |
error.type | string | Machine-readable error type code |
error.message | string | Human-readable error description |
Async Workflow
This model uses asynchronous execution. Submit a request and poll for the result.
- Submit — POST to /v1/run, receive an
id - Poll — GET /v1/run/{id} until status is
completed,failed, ortimeout - Retrieve — Read
outputsfrom the completed response
Code Examples
Ready-to-run snippets
# Step 1: Submit
curl -X POST https://api.sandbase.ai/v1/run \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "sandbase-ai/ai-avatar",
"seed": 42,
"audio": "https://static.sandbase.ai/examples/bytedance/omnihuman/1.5/input_audio_0.mp3",
"image": "https://static.sandbase.ai/examples/bytedance/omnihuman/1.5/input_image_1.png",
"prompt": "A woman with colorful hair talking on a podcast.",
"num_frames": 145,
"resolution": "480p"
}'
# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
-H "Authorization: Bearer YOUR_API_KEY"API README
AI Avatar
AI Avatar occupies the reference-led-video role in the model catalog for content pipeline engineers. Its practical value is to turn a one-off creative request into a repeatable catalog operation: an upstream service can confirm that it has prompt, image, submit one well-scoped job, and receive a rendered video asset for downstream approval. This positioning explains when the exact sandbase-ai/ai-avatar route belongs in an architecture without borrowing promises from another version, tier, or task variant.
A useful acceptance workflow begins by checking the source ownership, expected result, and release checklist. The caller records required values separately from optional choices such as seed, audio, num_frames, resolution, runs a small representative sample, and stores the route name with the resulting artifact. Reviewers then compare that artifact with the agreed acceptance criteria, document any rejected setup, and promote only a successful request shape into larger batches. This workflow gives sandbase-ai/ai-avatar measurable business context while leaving the Highlights section to explain model behavior.
Highlights
- Audio-driven portrait timing. A supplied soundtrack can drive the speaking cadence of the person shown in the required source image.
- Single-subject animation. The route is scoped to bringing one pictured character to life from a still visual reference.
- Frame-count direction.
num_frameslets a request define the target sequence length rather than relying on an unrelated text-duration option. - 480p or 720p delivery. Two declared output resolutions support preview-oriented and higher-detail avatar renders.
Pricing
| Billing option | Price |
|---|---|
| Billing formula | params.duration * 0.2 |
| Each generated second | $0.200000 |
When to Use
| Scenario | Why it fits |
|---|---|
| Choose AI Avatar | Use it when the job specifically calls for ai avatar and the route’s documented input contract matches assets already available in your workflow. |
| Keep the request reproducible | Use the required image, prompt explicitly, then record optional choices alongside the prompt for repeatable reruns. |
| Build controlled creative variations | Change one declared control at a time when comparing framing, format, duration, resolution, style, or other route-supported output decisions. |
| Integrate asynchronous delivery | Use this endpoint when an application can submit work, track completion, and collect the returned media URL instead of requiring an immediate inline artifact. |
| Validate before a large batch | Run representative prompts and source assets first, confirm the visual or audio behavior, then lock the successful request shape for scaled production. |
Prompt Guide
Lead with the subject or transformation, then add the composition, environment, style, lighting, motion, voice, or fidelity details relevant to this route. Keep every parameter inside the documented schema; the example below uses only fields declared for sandbase-ai/ai-avatar.
{
"image": "https://static.sandbase.ai/examples/bytedance/omnihuman/1.5/input_image_1.png",
"prompt": "A woman with colorful hair talking on a podcast.",
"resolution": "480p"
}
Technical Specs
| Specification | Details |
|---|---|
| Model ID | sandbase-ai/ai-avatar |
| Execution mode | async |
| Task type | video |
seed | integer · optional · min 0 · max 4294967295 |
audio | string · optional |
image | string · required |
prompt | string · required |
num_frames | integer · optional · min 41 · max 241 |
resolution | string · optional · choices: 480p, 720p |