An image-to-video API turns an approved still image into motion while preserving the subject, styling, and composition as a starting point. For AI influencer content, that is usually safer and cheaper than asking a text-to-video model to reinvent the character in every clip.
Why Start from an Image?
The still image becomes a visual contract. A creative team can approve the face, outfit, product placement, lighting, and framing before paying for video inference.
That changes the economics of a content pipeline:
- Cheap image iterations happen first
- Only approved concepts consume video credits
- The source image gives the video model a stronger identity anchor
- Failed creative directions are easier to diagnose
- The same still can feed several motion experiments
Image First, Motion Second
Treat the source image as a keyframe chosen by the art director. If it is not campaign-ready as a still, animation will not rescue it.
Image-to-Video Model Options
MakeInfluencer exposes several models through one API contract:
| Model API | Useful when |
|---|---|
| Seedance 2 Fast | Fast iteration, 480p–1080p options, generated audio, optional end frame |
| HappyHorse 1 | Smooth cinematic camera movement at 720p or 1080p |
| Kling 3 Pro | High-quality motion and detailed scenes |
| Veo 3.1 | Premium visual workflows and model comparison |
| Sora 2 | Narrative or cinematic directions that fit its input contract |
Do not choose a model from a static blog table alone. Fetch GET /api/v1/models/{modelId} because supported durations, aspect ratios, audio controls, and references are model-specific.
Production Workflow
Approve the Source
Select a character-consistent image with correct anatomy, product details, lighting, and frame composition.
Write Motion, Not Appearance
Describe subject movement, camera movement, environmental motion, pacing, and audio intent instead of redescribing the whole image.
Preview Credits
Quote the exact duration, resolution, references, and audio setting before creating.
Queue with Idempotency
Use one stable key per planned clip so retries cannot create duplicate paid jobs.
Review and Route
Poll the owned result, approve it, or try another model with the same source and a comparable prompt.
Example with Seedance 2 Fast
curl --request POST \
https://www.makeinfluencer.ai/api/v1/models/seedance2fast/preview-credits \
--header "Authorization: Bearer $MAKEINFLUENCER_API_KEY" \
--header "Content-Type: application/json" \
--data '{
"input": {
"prompt": "She turns toward camera and smiles; subtle hair movement; slow push-in",
"startFrameUrl": "https://example.com/approved-creator.jpg",
"aspectRatio": "9:16",
"duration": 5,
"resolution": "720p",
"generateAudio": true
}
}'
When the quote is approved, change preview-credits to generations and add an idempotency header. The create response returns kind: "video" and a generation ID.
Poll it here:
curl https://www.makeinfluencer.ai/api/v1/generations/video/GENERATION_ID \
--header "Authorization: Bearer $MAKEINFLUENCER_API_KEY"
Writing Better Motion Prompts
A useful image-to-video prompt has four layers:
- Subject action: turns, walks, raises the product, speaks, looks off-camera.
- Camera action: push-in, tracking shot, orbit, handheld follow, locked frame.
- Environmental motion: hair, fabric, steam, leaves, reflections, background people.
- Pacing and mood: restrained, energetic, dreamy, documentary, commercial.
Avoid asking for several scene changes in a short clip. Every cut creates another opportunity for the face, body, or product to drift.
Example Prompt Pattern
The creator lifts the bottle toward camera and gives a small confident smile. Slow 35mm push-in, gentle window-light shift, subtle hair and curtain movement. Premium skincare commercial, restrained motion, no scene cut.
Margin-Safe Batch Generation
For a paid product, separate exploration from production.
- Generate 3–5 still concepts
- Approve one or two
- Preview one low-cost or fast video model
- Generate a single clip per approved image
- Escalate only the winner to a premium model or higher resolution
The same MakeInfluencer credit balance supports every stage, so the product can show one budget instead of reconciling provider invoices.
Image-to-Video API FAQ
Does image-to-video preserve a character perfectly?
No model guarantees perfect identity. A strong approved source reduces drift, but review the face, hands, clothing, and product throughout the clip.
Can I use an end frame?
Some models support it, including Seedance 2 Fast. Always check the live model schema and capabilities before showing the field in your product.
Can the model create audio?
It depends on the model. Seedance 2 Fast exposes a generated-audio option. For controlled speech from uploaded audio, use InfiniteTalk.
Where can I compare all video endpoints?
Open the AI video API model directory. Every model page includes current fields, a sample request, credit preview, and polling route.