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heygen/video-1.0/reference-to-video

HeyGen Video 1.0 Reference-to-Video generates high-quality AI videos guided by image, video, and optional audio references, with prompt-controlled scenes and output up to 2K for character consistency, product videos, social content, marketing creatives, and production workflows. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Reference to Video
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$0.07per run·~14 / $1

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ExamplesView all

She gently taps the side of the sample container once. The creature flashes back with the exact same rhythm. She pauses, taps twice, and it responds twice. Her expression changes from scientific curiosity to amazement. The camera begins close on her hands and the creature, then slowly pushes toward her reaction. Intelligent-life discovery, subtle sci-fi tension, realistic underwater atmosphere.

Related Models

README

HeyGen Video 1.0 Reference-to-Video

HeyGen Video 1.0 Reference-to-Video creates short videos using images and videos as visual references. Add a prompt to describe the scene, motion, camera direction, dialogue, and sound, with optional audio references for additional guidance.

Why Choose This?

  • Flexible visual references — Use images and videos to guide people, products, environments, and visual style.
  • Multi-reference workflows — Combine multiple images and videos in a single generation.
  • Optional audio references — Add audio to guide voices, dialogue, or soundtrack direction.
  • Up to 2K output — Choose 480p, 768p, 1080p, or 2k.
  • Prompt control — Describe scene progression, movement, camera behavior, dialogue, and sound.

Parameters

ParameterRequiredDescription
promptYesDescribe the scene, motion, camera direction, dialogue, and sound. Maximum 32,000 characters.
reference_imagesConditionalUp to 9 image URLs. At least one image or video reference must be supplied.
reference_videosConditionalUp to 3 video URLs. The first 5 seconds of each video are used. At least one image or video reference must be supplied.
reference_audiosNoUp to 3 audio URLs. Requires at least one image or video reference.
durationNoOutput duration in whole seconds from 5 to 15. Default: 5.
resolutionNo480p, 768p, 1080p, or 2k. Default: 768p.
aspect_ratioNo16:9 or 9:16. Default: 16:9.
prompt_enhancementNodisabled, turbo, or quality. Default: disabled.
seedNoInteger from 0 to 2147483647. Omit for automatic selection.

A maximum of 12 reference files can be used in one request. At least one image or video reference is required.

How to Use

  1. Add visual references — Supply at least one image or video.
  2. Write a prompt — Describe the scene and explain how the references should be used.
  3. Add audio optional — Include audio references when voice or soundtrack guidance is needed.
  4. Choose output settings — Set duration, resolution, and aspect ratio.
  5. Submit — Generate and retrieve the completed video.

Pricing

Pricing is based on the duration, resolution, reference video duration, and number of reference images.

ResolutionPrice per Second
480p$0.07
768p$0.10
1080p$0.18
2K$0.18

The first 2 reference images are included. Each additional reference image costs $0.04.

Examples at 768p

ConfigurationPrice
5s output + 1 image$0.50
5s output + 3 images$0.54
5s output + 4s reference video$0.90
5s output + 3 images + 4s reference video + 1 audio$0.94

Audio references, prompt_enhancement, and seed do not add separate charges.

Best Use Cases

  • Product videos — Generate scenes using your own product references.
  • Character consistency — Guide recurring people or characters with reference images.
  • Location-based scenes — Use visual references to establish environments and settings.
  • Multi-reference storytelling — Combine several visual materials into a new scene.
  • Dialogue-driven clips — Add audio references alongside visual guidance.
  • Creative campaigns — Build promotional videos from existing brand assets.

Pro Tips

  • Use clear references and explain the role of each one in the prompt.
  • Refer to images as <Picture 1>, <Picture 2>, and so on according to their order.
  • Refer to audio as <Audio 1>, <Audio 2>, and so on.
  • Keep the main action and dialogue focused.
  • Start with fewer references when testing a new concept.
  • Use lower resolution for faster, lower-cost iteration before generating higher-resolution results.

Notes

  • At least one image or video reference is required. Audio-only requests are not supported.
  • Supports up to 9 images, 3 videos, and 3 audio clips, with no more than 12 reference files total.
  • Empty reference arrays are treated as omitted.
  • Each reference image must be no larger than 16 MiB.
  • Each reference video or audio file must be no larger than 32 MiB.
  • Only the first 5 seconds of each reference video are used.
  • References guide the generated scene but do not lock the first frame.
  • Supported aspect ratios are 16:9 and 9:16.
  • Custom pixel dimensions and a separate first-frame image are not supported.
  • Actual output duration may vary slightly from the requested duration.
  • A fixed seed can help compare variations but does not guarantee identical results.

Related Models

Note:This website uses AI models provided by third parties. Documentation prices are for reference and may be outdated. The Generate button shows an estimate; the final task charge prevails.

Video 1.0 Reference To Video API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/heygen/video-1.0/reference-to-video with your input as JSON. The endpoint returns a prediction id. Start polling the result endpoint around every 2 seconds, increase the interval for long-running tasks, and stop on any terminal status. On completed, read output values from data.outputs. Examples for Video 1.0 Reference To Video below.

HTTP example
set -euo pipefail

: "${WAVESPEED_API_KEY:?Set WAVESPEED_API_KEY}"

REQUEST_BODY=$(cat <<'JSON'
{
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "duration": 5,
    "resolution": "768p",
    "aspect_ratio": "16:9",
    "prompt_enhancement": "disabled",
    "reference_images": [
        "https://interactive-examples.mdn.mozilla.net/media/cc0-images/painted-hand-298-332.jpg"
    ]
}
JSON
)

# 1. Submit the prediction.
SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
  -X POST "https://api.wavespeed.ai/api/v3/heygen/video-1.0/reference-to-video" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d "$REQUEST_BODY")

TASK=$(printf '%s' "$SUBMIT_RESPONSE" | jq 'if has("data") then .data else . end')
PREDICTION_ID=$(printf '%s' "$TASK" | jq -r '.id')
if [ -z "$PREDICTION_ID" ] || [ "$PREDICTION_ID" = "null" ]; then
  printf 'Submission response did not contain a prediction id
' >&2
  exit 1
fi
RESULT_URL="https://api.wavespeed.ai/api/v3/predictions/$PREDICTION_ID/result"

# 2. Poll until the prediction finishes.
while true; do
  RESPONSE=$(curl --silent --show-error --fail-with-body "$RESULT_URL" \
    -H "Authorization: Bearer $WAVESPEED_API_KEY")
  RESULT=$(printf '%s' "$RESPONSE" | jq 'if has("data") then .data else . end')
  STATUS=$(printf '%s' "$RESULT" | jq -r '.status')
  case "$STATUS" in
    completed) printf '%s\n' "$RESULT" | jq '.outputs'; break ;;
    failed|cancelled|timeout|deleted) printf '%s\n' "$RESULT" | jq . >&2; exit 1 ;;
    *) sleep 2 ;;
  esac
done
Node.js example
const submitUrl = "https://api.wavespeed.ai/api/v3/heygen/video-1.0/reference-to-video";
const apiKey = process.env.WAVESPEED_API_KEY;
if (!apiKey) throw new Error('Set WAVESPEED_API_KEY');

async function requestJson(url, options = {}) {
  const response = await fetch(url, options);
  if (!response.ok) throw new Error(await response.text());
  return response.json();
}

// 1. Submit the prediction.
const body = await requestJson(submitUrl, {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
        "prompt": "A cinematic shot of a city at sunset, soft golden light",
        "duration": 5,
        "resolution": "768p",
        "aspect_ratio": "16:9",
        "prompt_enhancement": "disabled",
        "reference_images": [
                "https://interactive-examples.mdn.mozilla.net/media/cc0-images/painted-hand-298-332.jpg"
        ]
}),
});
const task = body.data ?? body;
if (!task.id) throw new Error("Submission response did not contain a prediction id");
const resultUrl = `https://api.wavespeed.ai/api/v3/predictions/${task.id}/result`;

// 2. Poll until the prediction finishes.
while (true) {
  const resultBody = await requestJson(resultUrl, {
    headers: { "Authorization": `Bearer ${apiKey}` },
  });
  const result = resultBody.data ?? resultBody;
  if (result.status === "completed") {
    console.log(result.outputs);
    break;
  }
  if (["failed", "cancelled", "timeout", "deleted"].includes(result.status)) throw new Error(JSON.stringify(result));
  await new Promise(resolve => setTimeout(resolve, 2000));
}
Python example
import json
import os
import time
from urllib.request import Request, urlopen

api_key = os.environ["WAVESPEED_API_KEY"]
headers = {"Authorization": f"Bearer {api_key}", "Content-Type": "application/json"}
payload = {
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "duration": 5,
    "resolution": "768p",
    "aspect_ratio": "16:9",
    "prompt_enhancement": "disabled",
    "reference_images": [
        "https://interactive-examples.mdn.mozilla.net/media/cc0-images/painted-hand-298-332.jpg"
    ]
}

def request_json(url, data=None):
    request = Request(url, data=data, headers=headers, method="POST" if data else "GET")
    with urlopen(request) as response:
        return json.load(response)

# 1. Submit the prediction.
body = request_json("https://api.wavespeed.ai/api/v3/heygen/video-1.0/reference-to-video", json.dumps(payload).encode())
task = body.get("data", body)
if not task.get("id"):
    raise RuntimeError("Submission response did not contain a prediction id")
result_url = f"https://api.wavespeed.ai/api/v3/predictions/{task['id']}/result"

# 2. Poll until the prediction finishes.
while True:
    result_body = request_json(result_url)
    result = result_body.get("data", result_body)
    status = result.get("status")
    if status == "completed":
        print(result.get("outputs", []))
        break
    if status in {"failed", "cancelled", "timeout", "deleted"}:
        raise RuntimeError(result)
    time.sleep(2)

Video 1.0 Reference To Video API — Frequently asked questions

What is the Video 1.0 Reference To Video API?

Video 1.0 Reference To Video is a Heygen model for reference-guided video generation, exposed as a REST API on WaveSpeedAI. HeyGen Video 1.0 Reference-to-Video generates high-quality AI videos guided by image, video, and optional audio references, with prompt-controlled scenes and output up to 2K for character consistency, product videos, social content, marketing creatives, and production workflows. 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 Video 1.0 Reference 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 result endpoint starting around every 2 seconds, increase the interval for long-running tasks, and stop on any terminal status. The playground generates Python, JavaScript, and cURL examples for submitting requests and polling results. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/heygen/heygen-video-1.0-reference-to-video.

How much does Video 1.0 Reference To Video cost per run?

Video 1.0 Reference To Video starts at $0.07 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 Video 1.0 Reference To Video accept?

Key inputs: `prompt`, `aspect_ratio`, `resolution`, `duration`, `seed`, `reference_images`. 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/heygen/heygen-video-1.0-reference-to-video.

How do I get started with the Video 1.0 Reference To Video API?

Sign up for a free WaveSpeedAI account to claim starter credits, copy your API key from /accesskey, then call the endpoint shown in the API tab of the playground. The playground also auto-generates a code sample in Python, JavaScript, or cURL for the parameters you've set.

Can I use Video 1.0 Reference To Video outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (Heygen). Check the provider's applicable terms and WaveSpeedAI's Terms of Service before commercial use.

llms.txt — heygen/video-1.0/reference-to-video for AI agents and LLMs