Lipsync 2 Video Lip Sync

curl --request POST \
  --url https://api.aihubmax.com/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "lipsync-2",
  "video_url": "https://v3.fal.media/files/tiger/IugLCDJRIoGqvqTa-EJTr_3wg74vCqyNuQ-IiBd77MM_output.mp4",
  "audio_url": "https://fal.media/files/lion/vyFWygmZsIZlUO4s0nr2n.wav",
  "sync_mode": "loop"
}
'

{
  "created": 1757165031,
  "id": "task-unified-1757165031-uyujaw3d",
  "model": "<string>",
  "object": "video.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "can_cancel": true,
    "estimated_time": 45
  },
  "type": "video"
}

{
  "error": {
    "message": "Invalid request format",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "message": "Invalid API key",
    "type": "authentication_error"
  }
}

{
  "error": {
    "message": "Insufficient account balance",
    "type": "insufficient_quota"
  }
}

{
  "error": {
    "message": "Parameter validation failed",
    "type": "validation_error"
  }
}

{
  "error": {
    "message": "Rate limit exceeded",
    "type": "rate_limit_error"
  }
}

{
  "error": {
    "message": "Internal server error",
    "type": "server_error"
  }
}

{
  "error": {
    "message": "Service temporarily unavailable, please try again later",
    "type": "service_unavailable"
  }
}

POST

videos

generations

curl --request POST \
  --url https://api.aihubmax.com/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "lipsync-2",
  "video_url": "https://v3.fal.media/files/tiger/IugLCDJRIoGqvqTa-EJTr_3wg74vCqyNuQ-IiBd77MM_output.mp4",
  "audio_url": "https://fal.media/files/lion/vyFWygmZsIZlUO4s0nr2n.wav",
  "sync_mode": "loop"
}
'

{
  "created": 1757165031,
  "id": "task-unified-1757165031-uyujaw3d",
  "model": "<string>",
  "object": "video.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "can_cancel": true,
    "estimated_time": 45
  },
  "type": "video"
}

{
  "error": {
    "message": "Invalid request format",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "message": "Invalid API key",
    "type": "authentication_error"
  }
}

{
  "error": {
    "message": "Insufficient account balance",
    "type": "insufficient_quota"
  }
}

{
  "error": {
    "message": "Parameter validation failed",
    "type": "validation_error"
  }
}

{
  "error": {
    "message": "Rate limit exceeded",
    "type": "rate_limit_error"
  }
}

{
  "error": {
    "message": "Internal server error",
    "type": "server_error"
  }
}

{
  "error": {
    "message": "Service temporarily unavailable, please try again later",
    "type": "service_unavailable"
  }
}

Authorizations

Authorization

string

header

required

All APIs require Bearer Token authentication

Add to request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json

model

string

default:lipsync-2

required

lipsync-2: Standard quality lipsync-2-pro: Higher quality sync-3: Next-generation, professional quality; does not support temperature or active_speaker

Examples:

"lipsync-2"

"lipsync-2-pro"

"sync-3"

video_url

string

required

Public URL of the input video file

Notes:

Format: MP4
Must be a publicly accessible URL

Example:

"https://v3.fal.media/files/tiger/IugLCDJRIoGqvqTa-EJTr_3wg74vCqyNuQ-IiBd77MM_output.mp4"

audio_url

string

required

Public URL of the input audio file

Notes:

Format: MP3 / WAV
Must be a publicly accessible URL
Audio duration directly affects output video duration and billing (depends on sync_mode)

Example:

"https://fal.media/files/lion/vyFWygmZsIZlUO4s0nr2n.wav"

sync_mode

string

default:loop

Video-audio synchronization mode, determines output video duration

Options:

bounce — Video plays back and forth to match audio length, output duration = audio duration
loop — Video loops to match audio length, output duration = audio duration
cut_off — Audio is trimmed when video ends, output duration = min(video, audio)
silence — Video is padded with silence at the end, output duration = video duration
remap — Audio timeline is remapped to match video, output duration = audio duration

Example:

"loop"

temperature

number | null

Mouth movement expressiveness control, default 0.5

Notes:

Range: 0.0 - 1.0
Only supported by lipsync-2 and lipsync-2-pro
sync-3 does not support this parameter

Do not pass this parameter unless necessary.

Required range: 0 <= x <= 1

Example:

0.8

active_speaker

boolean | null

Enable active speaker detection

Notes:

Only supported by lipsync-2 and lipsync-2-pro
sync-3 does not support this parameter

Do not pass this parameter unless necessary.

Example:

true

Response

Task created successfully

created

integer

Task creation timestamp

Example:

1757165031

string

Task ID

Example:

"task-unified-1757165031-uyujaw3d"

model

string

Actual model name used

object

enum<string>

Specific task type

Available options:

video.generation.task

progress

integer

Task progress percentage (0-100)

Required range: 0 <= x <= 100

Example:

0

status

enum<string>

Task status

Available options:

pending,

processing,

completed,

failed

Example:

"pending"

task_info

object

Asynchronous task info

Show child attributes

type

enum<string>

Task output type

Available options:

video

Example:

"video"

Image Series

Video Series

Audio Series

Text Series

Document Processing

Task Management

File Management

Lipsync 2 Video Lip Sync

Authorizations

All APIs require Bearer Token authentication

Body

Response