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Sync 3 Lipsync

sync/lipsync/3.0/video-to-video

Sync 3 by sync. re-animates the speaker's lips in an existing video to match new audio, with studio-grade identity preservation.

Base price
$0.67USD / run
Execution
async
Model type
video
Input fields
3
Production route

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Playground

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Input
Input audio URL.
Input video URL.
How to handle audio/video length mismatch. Allowed values: cut_off, loop, bounce, silence, remap.
OutputExample

Examples

Select an example to load its inputs and result into the playground.

Model card

Specifications

Pricing

Base price
$0.67 / run

Context & modalities

Input
Schema-defined
Output
video

Capabilities

Chat
Not supported
Vision
Not supported
Reasoning
Not supported
Structured output
Not supported
Function calling
Not supported
Audio input
Not supported

Access

Provider
Sync Labs
Model ID
sync/lipsync/3.0/video-to-video
Execution
async
API
Unified Run API
Endpoint
/v1/run

API README

Sync 3 Lipsync

Sync 3 by sync. re-animates the speaker's lips in an existing video to match new audio, with studio-grade identity preservation.

Parameters

FieldDescription
videoSource video (required)
audioReplacement audio (required)
sync_modecut_off / loop / bounce / silence / remap

Pricing

ConfigurationPrice
Per second of output video$0.1333

Output: one MP4 video URL.

Start building

Send your first request

OpenAI-compatible endpoint with unified authentication and usage tracking.

Production API
Unified Run API endpoint
https://api.sandbase.ai/v1/run
Model ID
sync/lipsync/3.0/video-to-video
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
  -X POST "https://api.sandbase.ai/v1/run" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "model": "sync/lipsync/3.0/video-to-video",
  "audio": "https://static.sandbase.ai/examples/sync/lipsync/v3/input_audio_1.wav",
  "video": "https://static.sandbase.ai/examples/sync/lipsync/v3/output_url_0.mp4",
  "sync_mode": "cut_off"
}
SANDBASE_JSON
)
run_id=$(printf '%s' "$result" | jq -r .id)
for attempt in $(seq 1 120); do
  status=$(printf '%s' "$result" | jq -r .status)
  case "$status" in completed|failed|timeout) break ;; esac
  sleep 2
  result=$(curl --fail-with-body --silent \
    -H "Authorization: Bearer $SANDBASE_API_KEY" \
    "https://api.sandbase.ai/v1/run/$run_id")
done
status=$(printf '%s' "$result" | jq -r .status)
[ "$status" = completed ] || { echo "Generation ended: $status" >&2; exit 1; }
printf '%s\n' "$result"

Choose your model

Compare models

All image & video models
ModelTypeDefault priceReleased
Sync 3 LipsyncThis model
Sync Labs
Video$0.67 / runApr 6, 2026
Sync LabsVideo$0.67 / runJun 22, 2026

Questions

FAQ

How do I call Sync Labs Sync 3 Lipsync through SandBase?

Create a SandBase API key, then send requests with the model ID "sync/lipsync/3.0/video-to-video" to Unified Run API (/v1/run) at https://api.sandbase.ai. The request examples on this page show the exact payload.

Do I need a separate Sync Labs account?

No. One SandBase API key and balance gives you access to Sync Labs Sync 3 Lipsync and the other models in the catalog; you do not need to sign up with Sync Labs separately.