Infinitetalk Fast Video to Video | AI Digital Human API

infinitetalk-fast Video-to-Video

What is InfiniteTalk?

InfiniteTalk creates new videos by combining an input silent video and an audio track. It ensures precise lip synchronization while aligning head, face, and body movements with the audio. With optional masking and prompting, you can control which areas move and how the scene appears. The model also maintains visual identity for natural and consistent results.

Why it looks great

Accurate lip synchronization: matches lip motion precisely to the audio.
Full-body coherence: aligns head pose, facial expressions, and posture with speech.
Mask control: optional mask images let you define which regions can move.
Instruction following: prompts can guide style, pose, or behavior.
Identity preservation: ensures consistent visual identity across all frames.

How to Use

Upload the audio file.
Upload a video as the base.
(Optional) Upload a mask image to control which regions can move.
(Optional) Write a prompt to guide the style, pose, or expressions.
Set the seed if you want reproducibility.
Submit the job and download the generated video.

Note

Max clip length per job: 10 minutes
Processing speed: ~10–30 seconds of wall time per 1 second of video (varies by resolution and queue load)
Mask safety tip: Do not upload the full image as mask_image. The mask should only cover the regions you want to animate—otherwise the result may render as fully black.

More Versions

Infinitetalk Fast Video To Video API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/wavespeed-ai/infinitetalk-fast/video-to-video with your input as JSON. The endpoint returns a prediction id; poll the prediction endpoint until status flips to completed, then read the output URL from data.outputs[0]. Examples for Infinitetalk Fast Video To Video below.

HTTP example

# Submit the prediction
curl -X POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/infinitetalk-fast/video-to-video" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d '{
    "audio": "https://example.com/your-audio.mp3",
    "video": "https://example.com/your-input.mp4",
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "seed": -1
}'

# Response includes a prediction id. Poll for the result:
curl -X GET "https://api.wavespeed.ai/api/v3/predictions/{request_id}/result" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY"

# When status is "completed", read the output from data.outputs[0].

Node.js example

// npm install wavespeed
const WaveSpeed = require('wavespeed');

const client = new WaveSpeed(); // reads WAVESPEED_API_KEY from env

const result = await client.run("wavespeed-ai/infinitetalk-fast/video-to-video", {
        "audio": "https://example.com/your-audio.mp3",
        "video": "https://example.com/your-input.mp4",
        "prompt": "A cinematic shot of a city at sunset, soft golden light",
        "seed": -1
});

console.log(result.outputs[0]); // → URL of the generated output

Python example

# pip install wavespeed
import wavespeed

output = wavespeed.run(
    "wavespeed-ai/infinitetalk-fast/video-to-video",
    {
    "audio": "https://example.com/your-audio.mp3",
    "video": "https://example.com/your-input.mp4",
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "seed": -1
}
)

print(output["outputs"][0])  # → URL of the generated output

Infinitetalk Fast Video To Video API — Frequently asked questions

What is the Infinitetalk Fast Video To Video API?

Infinitetalk Fast Video To Video is a WaveSpeedAI model for talking-avatar generation, exposed as a REST API on WaveSpeedAI. Audio-driven infinitetalk-fast turns one video plus audio into realistic talking or singing videos with lip-sync. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing. You can call it programmatically or try it from the playground above.

How do I call the Infinitetalk Fast Video To Video API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID; poll the prediction endpoint until status flips to "completed", then read the output URL from the result. The playground generates a ready-to-paste code sample in Python, JavaScript, or cURL for whatever inputs you've set. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/wavespeed-ai/infinitetalk-fast-video-to-video.

How much does Infinitetalk Fast Video To Video cost per run?

Infinitetalk Fast Video To Video starts at $0.075 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Infinitetalk Fast Video To Video accept?

Key inputs: `prompt`, `video`, `audio`, `seed`, `mask_image`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/wavespeed-ai/infinitetalk-fast-video-to-video.

How long does Infinitetalk Fast Video To Video take to generate?

Average end-to-end generation time on WaveSpeedAI is around 56 seconds per request — measured across recent runs. Queue time scales with global demand; live status is visible in the prediction record.

Can I use Infinitetalk Fast Video To Video outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (WaveSpeedAI). The license summary appears on the model card above; see WaveSpeedAI's Terms of Service for platform-level conditions.

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