ComfyUI Node
arkennemasis fal · Sync Lipsync 3 · $8/min
sync-3 most powerful lipsync model yet, featuring native visual intelligence for professional-quality video. Pricing (from fal, 2026-09-29): $8 per minute (fal's billing unit). Model page: https://fal.ai/models/fal-ai/sync-lipsync/v3 Key: FAL_KEY in the .env next to run_nvidia_gpu.bat. Results are saved in output/fal/fal-ai_sync-lipsync_v3/.
arkennemasis fal · Sync Lipsync 3 · $8/min
- video
- audio
- video
- video_path
- info
◄sync_modecut_off►
◄options_prompt(not set)►
◄options_occlusion_detection_enabled(not set)►
◄options_temperature-1.00►
◄options_active_speaker_detection►
◄options_model_mode(not set)►
◄max_cost_usd20.0►
◄reuse_identical_runtrue►
◄extra_json►
◄max_concurrent1►
Categoryarkennemasis/fal/Lip Sync/Sync
Inputs (12)
| Name | Type | Default | Description |
|---|---|---|---|
| video | VIDEO | URL of the input video | |
| audio | AUDIO | URL of the input audio | |
| sync_mode | COMBO | cut_off | Lipsync mode when audio and video durations are out of sync. |
| options_prompt | COMBO | (not set) | Emotion prompt for generation. This is a Sync.so option primarily used by react-1. '(not set)' leaves it to the model. |
| options_occlusion_detection_enabled | COMBO | (not set) | Whether to detect occlusion during generation. Sync.so handles this automatically for sync-3, so this option is ignored by sync-3. |
| options_temperature | FLOAT | -1.00-1–1 | Controls how expressive lipsync can be; 0 is least expressive, 1 is most expressive. Sync.so handles this natively for sync-3, so this option is ignored by sync-3. -1 leaves it to the model. |
| options_active_speaker_detection | STRING | Active speaker detection configuration for videos with multiple people. JSON. Empty leaves it out. | |
| options_model_mode | COMBO | (not set) | Edit region for the model. This is a Sync.so option primarily used by react-1. '(not set)' leaves it to the model. |
| max_cost_usdopt | FLOAT | 20.00–100000 | Safety cap. If the estimated cost of this run is above this many US dollars the node stops BEFORE sending anything to fal. 0 = no cap. |
| reuse_identical_runopt | BOOLEAN | true | If these exact inputs (the settings AND the same pictures/clips/audio) were already paid for and the files are still in output/fal, return them instead of paying again - also after a ComfyUI restart. Turn off for a fresh take with the same settings. |
| extra_jsonopt | STRING | Advanced: a JSON object merged into the request last, for any fal field this node has no box for. Example: {"seed": 7}. Leave empty normally. | |
| max_concurrentopt | INT | 11–32 | How many paid fal calls may run at the same time in one run, across every fal node. 1 (default) = one after another. This node starts its paid part only while fewer than this many fal calls are running. Once any fal node fails, the ones still waiting are not started, so nothing more is billed. |
Outputs (3)
| Name | Type | Description |
|---|---|---|
| video | VIDEO | — |
| video_path | STRING | — |
| info | STRING | JSON: request id, cost estimate, saved files and fal's full answer. |