Bytedance Seedance V1 Pro Fast Image To Video

Bytedance Seedance V1 Pro Fast Image To Video

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Seedance V1 Pro Fast produces coherent multi-shot image-to-video with smooth, stable motion and faithful prompt control. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Seedance V1 Pro I2V Fast is an advanced image-to-video model designed for coherent, multi-shot storytelling with exceptional stability and prompt accuracy. Powered’s latest video foundation framework, it transforms a single image and description into smooth, cinematic motion sequences — ideal for creators, studios, and advertisers who demand both speed and visual fidelity.


🌟 Key Features

  • 🎞️ Coherent Multi-Shot Motion Generates videos that maintain consistent characters, backgrounds, and lighting across complex motion sequences.

  • 🚀 Fast & Efficient Rendering Optimized for rapid generation, offering high-quality output at lower latency compared to standard models.

  • 🧠 Accurate Prompt Following Handles detailed action descriptions, perspective shifts, and multi-stage motion transitions with semantic precision.

  • 🎨 Style Preservation Keeps the original artistic tone, color, and atmosphere of the input image while introducing realistic or stylized movement.

  • 📸 Resolution Flexibility Supports 480p, 720p, and 1080p outputs — balancing speed, cost, and detail to suit different production needs.


⚙️ Parameters

ParameterDescription
prompt*Describe the scene, motion, and style (e.g., “Cinematic pan across a city skyline as a woman turns and smiles toward the camera.”).
image*Upload a static image (JPG / PNG) that defines composition, character, or lighting.
durationVideo length in seconds (3–10s).
resolutionChoose between 480p (faster, cheaper) or 720p / 1080p (higher detail).

💰 Pricing

ResolutionPrice per secondExample (5s)Example (10s)
480p$0.012 / s$0.06$0.12
720p$0.024 / s$0.12$0.24
1080p$0.048 / s$0.24$0.48

💡 Use Cases

  • Cinematic Storyboarding — Animate static frames into compelling story shots.
  • Advertising & Product Motion — Turn product photos into dynamic marketing clips.
  • Character & Environment Animation — Preserve consistency across movement-heavy sequences.
  • Social & Short-Form Video Creation — Rapidly generate stylized motion from concept art or photos.

Note

For optimal video results, it is recommended that the specified video aspect ratio closely matches the original aspect ratio of your uploaded image.

Authentication

For authentication details, please refer to the Authentication Guide.

API Endpoints

Submit Task & Query Result

set -euo pipefail

export WAVESPEED_API_KEY="your-api-key"

REQUEST_BODY=$(cat <<'JSON'
{
  "prompt": "A cinematic ocean wave at sunrise, highly detailed",
  "image": "https://interactive-examples.mdn.mozilla.net/media/cc0-images/painted-hand-298-332.jpg",
  "resolution": "480p",
  "duration": 5,
  "aspect_ratio": "21:9",
  "camera_fixed": false,
  "seed": -1
}
JSON
)

# 1. Submit the prediction.
SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
  -X POST "https://api.wavespeed.ai/api/v3/bytedance/seedance-v1-pro-fast/image-to-video" \
  -H "Authorization: Bearer ${WAVESPEED_API_KEY}" \
  -H "Content-Type: application/json" \
  -d "${REQUEST_BODY}")

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

# 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' "${RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
  STATUS=$(printf '%s' "${RESULT}" | jq -r '.status // empty')

  case "${STATUS}" in
    completed) printf '%s\n' "${RESULT}" | jq '.outputs'; break ;;
    failed|cancelled|timeout) printf '%s\n' "${RESULT}" | jq . >&2; exit 1 ;;
    created|processing) sleep 2 ;;
    *) printf 'Unexpected status: %s
' "${STATUS}" >&2; exit 1 ;;
  esac
done

Parameters

Task Submission Parameters

Request Parameters

ParameterTypeRequiredDefaultRangeDescription
promptstringYes-The positive prompt for the generation.max length 2000
imagestringYes-Input image for video generation; Supported image formats include .jpg/.jpeg/.png; The image file size cannot exceed 10MB, and the image resolution should not be less than 300*300px.
resolutionstringNo480p480p, 720p, 1080pThe resolution of the generated media.
durationintegerNo52, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12The duration of the generated media in seconds.
aspect_ratiostringNo-21:9, 16:9, 4:3, 1:1, 3:4, 9:16The aspect ratio of the generated media.
camera_fixedbooleanNofalse-Whether to fix the camera position.
seedintegerNo-1-The random seed to use for the generation. -1 means a random seed will be used.

Response Parameters

ParameterTypeDescription
codeintegerHTTP status code (e.g., 200 for success)
messagestringStatus message (e.g., “success”)
data.idstringUnique identifier for the prediction, Task Id
data.modelstringModel ID used for the prediction
data.outputsarrayOutput values, usually URL strings; some models return text strings or structured result objects (empty when status is not completed)
data.urlsobjectObject containing related API endpoints
data.urls.getstringURL to retrieve the prediction result
data.statusstringStatus of the task: created, processing, completed, or failed
data.created_atstringISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.errorstringError message (empty if no error occurred)
data.timingsobjectObject containing timing details
data.timings.inferenceintegerInference time in milliseconds

Result Request Parameters

ParameterTypeRequiredDefaultDescription
idstringYes-Task ID

Result Response Parameters

ParameterTypeDescription
codeintegerHTTP status code (e.g., 200 for success)
messagestringStatus message (e.g., “success”)
dataobjectThe prediction data object containing all details
data.idstringUnique identifier for the prediction
data.modelstringModel ID used for the prediction
data.outputsarray<string | object>Array of generated outputs (empty when status is not completed). Items are usually URL strings, but may be text strings or structured result objects, depending on the model.
data.urlsobjectObject containing related API endpoints
data.urls.getstringURL to poll for the prediction result
data.statusstringStatus: created, processing, completed, or failed
data.created_atstringISO timestamp of when the request was created
data.errorstringError message (empty if no error occurred)
data.timingsobjectObject containing timing details
data.timings.inferenceintegerInference time in milliseconds
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