Sonilo V1 Video To Video Sfx

Sonilo V1 Video To Video Sfx

Playground

Sonilo Video to Video SFX adds AI-generated sound effects to input videos, creating a new video with a synchronized audio track for video sound design, ads, social content, games, and creative production workflows. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Sonilo Video-to-Video SFX adds generated sound effects to an input video and returns an MP4 video with the new audio track. Upload a video, optionally describe the overall sound design, and generate a video output with synchronized sound effects.

Why Choose This?

• Video-to-video sound effect generation
  Add generated sound effects directly to an input video.

• Prompt-guided sound design
  Use an optional prompt to describe the overall sound style, ambience, intensity, or realism.

• MP4 video output
  Return a finished MP4 video with the generated audio track included.

• Video-aware timing
  Generated sound effects are aligned with the source video’s timing and visual content.

• Standard video output
  The final MP4 is returned as a URL in the standard WaveSpeed prediction response.

Parameters

How to Use

1. Upload your video — Provide the input video that needs generated sound effects.
2. Add prompt guidance optional — Describe the desired sound design, ambience, mood, intensity, or realism.
3. Submit — Generate the MP4 video with the new audio track.
4. Use the result — Retrieve the output video URL from the standard WaveSpeed prediction response.

Pricing

Pricing is $0.009 per second of input video duration.

Best Use Cases

• Video sound design — Add generated sound effects to videos based on visual content.
• Social video production — Create videos with sound effects for ads, reels, shorts, and campaign content.
• Animation and game previews — Add sound effects to animated clips, concept videos, and gameplay-style previews.
• Ambient scene enhancement — Generate environmental sounds such as rain, traffic, crowds, machinery, wind, or room tone.
• Creative prototyping — Quickly test sound directions before final audio production.

Pro Tips

• Use a clear video with visible action for better sound timing.
• Add a prompt when you want a specific sound style, environment, or intensity.
• Mention the overall mood, such as realistic, cinematic, playful, tense, soft, or dramatic.
• Keep the prompt focused on sound design rather than visual changes.
• Keep the input video within 180 seconds and 300 MB.

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-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/sonilo/v1/video-to-video-sfx" \
  -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