Bytedance Seedance V1 Lite I2V 480p

Bytedance Seedance V1 Lite I2V 480p

Playground

Seedance V1 Lite is a 480p Image-to-Video model for coherent multi-shot videos with smooth motion and precise prompts. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Seedance v1 Lite I2V 480p generates short videos from a single reference image plus a motion-focused prompt. Upload a starting image, describe the action and camera beats, and the model animates the scene while keeping the input image as the visual anchor. You can also provide an optional last_image to guide how the clip ends, and enable camera_fixed when you want motion without camera movement.

Key capabilities

• Image-to-video generation anchored to a reference image (480p output)
• Lightweight, fast iteration for short clips and quick variations
• Optional last_image support for smoother ending continuity
• Optional camera_fixed mode for stable framing
• Seed control for reproducible takes

Use cases

• Action shots from a single keyframe (sports, skating, dance, gestures)
• Social prototypes and quick story beats at low cost
• Start-to-end guided shots using last_image for more predictable endings
• Product/object animation with stable framing (camera_fixed)
• Generating multiple variations quickly by changing seed

Pricing

Inputs

• image (required): starting reference image (first-frame anchor)
• prompt (optional/required by UI): motion and scene direction
• last_image (optional): end-frame reference to guide the finishing state

Parameters

• prompt: describes subject action, environment motion, and camera direction
• image: input image (upload or URL)
• last_image: optional end reference image (upload or URL)
• duration: video length in seconds
• aspect_ratio: output aspect ratio selection
• camera_fixed: whether to lock the camera position
• seed: random seed (-1 for random; fixed value for reproducible results)
• safety checker: enabled filtering for safer generations (if available in your UI)

Prompting guide (I2V)

Write prompts like a director’s beat sheet:

• Subject action: what changes over time (glide, jump, turn, land, celebrate)
• Camera: follow, dolly, pan, slow push-in (or keep fixed)
• Environment: motion blur cues, dust, wind, crowd movement, lighting shifts
• Continuity: explicitly say what must remain consistent (subject identity, outfit, setting)

Example prompts

• A skateboarder performs a smooth boardslide along the ledge in a sunny skatepark. Camera follows from a low wide angle, then gently pushes in as he lands. Natural motion blur, crisp daylight, energetic vibe.
• A runner sprints past the camera, dust kicks up, shallow depth of field, camera pans to follow, dynamic sports cinematography, 5 seconds.
• A dancer spins and stops on beat, stage lights flicker softly, camera slow orbit, clean motion, 5 seconds.

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'
{
  "image": "https://interactive-examples.mdn.mozilla.net/media/cc0-images/painted-hand-298-332.jpg",
  "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-lite-i2v-480p" \
  -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

Response Parameters

Result Request Parameters

Result Response Parameters