sync-lipsync-3

fal.ai sync-lipsync v3 — given an input video and audio, generate a new video where the speaker's lip movement matches the audio. Good for dubbing, localization, and re-syncing virtual presenters.

Overview

Field	Value
Model ID	`sync-lipsync-3`
CLI	`dlazy sync-lipsync-3`
MCP	`sync-lipsync-3` (Claude Code surfaces this as `mcp__dlazy__sync-lipsync-3`)
Type	`video`
Execution	Async task; the CLI polls until completion (`--no-wait` returns `generateId` immediately)
Batch	Supports `--batch <n>` parallel fan-out

Parameters

Arg	Type	Required	Notes
`video_url`	url	Yes	Video URL; video (accepts URL, local path, or data: URL)
`audio_url`	url	Yes	Audio URL; audio (accepts URL, local path, or data: URL)
`sync_mode`	"cut_off" \| "loop" \| "bounce" \| "silence" \| "remap"	No	Sync mode; default `"cut_off"`

--input @file.json or --input '{...}' can supply all args at once; flags take precedence over --input keys.

CLI Examples

dlazy sync-lipsync-3 --help
dlazy sync-lipsync-3 --video_url "https://example.com/source.mp4" --audio_url "https://example.com/source.mp3"
dlazy sync-lipsync-3 --video_url "./local-video.mp4" --audio_url "https://example.com/source.mp3"
dlazy sync-lipsync-3 --video_url "https://example.com/source.mp4" --audio_url "https://example.com/source.mp3" --dry-run
dlazy sync-lipsync-3 --video_url "https://example.com/source.mp4" --audio_url "https://example.com/source.mp3" --no-wait
dlazy sync-lipsync-3 --video_url "https://example.com/source.mp4" --audio_url "https://example.com/source.mp3" --batch 4

Compose with a pipeline

dlazy seedance-2.0-fast --prompt "reference clip" \
  | dlazy sync-lipsync-3 --video_url -

MCP is consumed by AI clients, not handwritten. Once dLazy is registered as an MCP server the tool appears in the client's tool list — Claude Code surfaces it as mcp__dlazy__sync-lipsync-3; generic clients (e.g. OpenClaw) call it as sync-lipsync-3.

See MCP setup for how to add the server.

Output

{
  "outputs": [
    { "type": "video", "id": "o_...", "url": "https://files.dlazy.com/result.mp4", "mimeType": "video/mp4" }
  ]
}

Media tools emit image / video / audio / file outputs. Use --output url to print only the URLs on stdout.