Video Relighter API Documentation

Video Relighter API Documentation

Playground

Video Relighter re-lights outdoor footage to a chosen lighting preset and sun direction, or re-renders the same shot at night, keeping composition, camera movement and subject motion intact. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Video Relighter changes the lighting of a video while preserving the original composition, camera movement, subject motion, and scene structure. Choose a daylight or night lighting preset, set the sun direction when applicable, and generate a relit version of the same shot without prompt writing.

Why Choose This?

• Video relighting workflow
  Change the lighting of an existing video while keeping the original shot structure intact.

• Daylight and night presets
  Choose from daylight looks such as hard_sunlight, golden_hour, or overcast, or night styles such as moonlight, street_lights, or city_glow.

• Sun direction control
  Set where the sun comes from for daylight presets using sun_direction.

• Outdoor scene enhancement
  Relight landscapes, streets, drone footage, outdoor people shots, and other exterior scenes.

• Multiple output resolutions
  Choose 480p, 720p, or 1080p while preserving the original aspect ratio.

• Seed support
  Set a seed when reproducible relighting results are needed.

Parameters

How to Use

1. Upload a video — Provide the outdoor video you want to relight.
2. Choose a lighting preset — Select a daylight look or night style.
3. Set sun direction optional — Choose the sun direction for daylight presets.
4. Choose target resolution — Select 480p, 720p, or 1080p.
5. Set seed optional — Use a fixed seed when reproducibility is needed.
6. Submit — Generate the relit video output.

Pricing

Pricing is based on input video duration and selected target_resolution.

Billed duration is rounded up to the next whole second, with a minimum billed duration of 3 seconds and a maximum billed duration of 120 seconds.

Example Costs

lighting, sun_direction, and seed do not add separate charges.

Best Use Cases

• Outdoor video relighting — Change the lighting direction, mood, or time-of-day feel of exterior footage.
• Golden-hour looks — Rework daytime footage with warmer, lower-angle lighting.
• Night-style conversion — Re-render the same shot with moonlight, city glow, street lights, or blue-hour lighting.
• Drone and landscape footage — Adjust sky, clouds, shadows, and sunlight direction in outdoor scenes.
• Creative enhancement — Test different lighting moods without reshooting.
• Previsualization and post-production — Explore lighting directions before final editing or compositing.

Pro Tips

• Use outdoor footage for best results.
• Choose a lighting preset that clearly differs from the original footage for a stronger visible effect.
• Use sun_direction only with daylight presets.
• Night presets ignore sun_direction.
• backlight and hazy_backlight work best when sun_direction is set to behind.
• Keep the same seed when you want to reproduce a result.
• This endpoint relights the scene; it is not intended for object removal, colorization, or video restoration.

Limits and Performance

• Maximum processed video length per job: 120 seconds.
• Input beyond 120 seconds is not processed or billed.
• Best suited for outdoor scenes such as landscapes, streets, drone footage, and people outdoors.
• Indoor footage is not supported for relight mode.
• Processing time can vary by resolution and video content.
• Higher output resolutions generally take longer to process.

Notes

• video is required.
• lighting defaults to hard_sunlight.
• sun_direction defaults to right.
• target_resolution defaults to 720p.
• Aspect ratio is preserved.
• Billed duration is rounded up and clamped to 3–120 seconds.
• Very short videos are billed as 3 seconds.
• Night presets ignore sun_direction.

Related Models

• Video Restorer — Restore damaged footage by reducing compression artifacts or improving soft-focus video.
• Video Colorizer — Add or restore color in video footage for restoration and creative enhancement workflows.
• Video Cleaner — Clean up video noise, artifacts, and visual imperfections for clearer output.
• Video Relighter — Adjust or improve video lighting while preserving the original scene and motion.

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'
{
  "video": "https://interactive-examples.mdn.mozilla.net/media/cc0-videos/flower.mp4",
  "lighting": "hard_sunlight",
  "sun_direction": "right",
  "target_resolution": "720p"
}
JSON
)

# 1. Submit the prediction.
SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
  -X POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/video-relighter" \
  -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 "${PREDICTION_ID}" ]; then
  printf 'Submission response did not contain a prediction id
' >&2
  exit 1
fi
RESULT_URL="https://api.wavespeed.ai/api/v3/predictions/${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' "${RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
  STATUS=$(printf '%s' "${RESULT}" | jq -r '.status // empty')

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

Parameters

Task Submission Parameters

Request Parameters

Response Parameters

Result Request Parameters

Result Response Parameters