lightricks/ltx-2.0-pro/extend

Name: LTX 2.0 Pro Extend
Author: Lightricks

Ltx 2.0 Pro Extend by Lightricks - AI-powered video editing and transformation. Apply style transfer, motion control, lip-sync, and visual effects to existing videos with natural language instructions.

Input

Prompt(string)

Description of what should happen in the extended portion of the video.

Video URL(string)

The URL of the video to extend

Duration(integer)

120

Duration in seconds to extend the video. Maximum 20 seconds. Range: 1 to 20.

Idle

Example output — click Run to generate your own

Production endpoint

Send your first request

OpenAI-compatible endpoint with unified authentication and usage tracking.

POSThttps://api.sandbase.ai/v1/run

Model IDlightricks/ltx-2.0-pro/extend

Input Schema

3 parameters · 1 required · 2 optional

Parameter	Type	Required	Description
`prompt`	string	Required	Description of what should happen in the extended portion of the video. · Max length: 5000
`video`	string	Optional	The URL of the video to extend
`duration`	integer	Optional	Duration in seconds to extend the video. Maximum 20 seconds. · Min: 1 · Max: 20 · Default: 5

Output Schema

Field	Type	Description
`id`	string	Unique identifier for the generation task
`status`	string	Task status: pending, running, completed, failed, timeout
`model`	string	Model used for the generation
`outputs`	array	Array of output items
`outputs[].url`	string	URL of the generated artifact
`outputs[].content_type`	string	MIME type (e.g. image/png, video/mp4)
`error`	object \| null	Error details if failed, null on success
`error.type`	string	Machine-readable error type code
`error.message`	string	Human-readable error description

Async Workflow

This model uses asynchronous execution. Submit a request and poll for the result.

Submit — POST to /v1/run, receive an id
Poll — GET /v1/run/{id} until status is completed, failed, or timeout
Retrieve — Read outputs from the completed response

Code Examples

Ready-to-run snippets

# Step 1: Submit
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
  "model": "lightricks/ltx-2.0-pro/extend",
  "video": "https://static.sandbase.ai/examples/lightricks/ltx-2.0-pro/extend/input_video_0.mp4",
  "prompt": "Continue the motion smoothly",
  "duration": 5
}'

# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
  -H "Authorization: Bearer YOUR_API_KEY"

← Back to LTX 2.0 Pro Extend

API README

LTX 2.0 Pro Extend

LTX 2.0 Pro Extend is a video continuation endpoint in the LTX 2.0 family. It is built for creators who need to turn a concrete creative brief into a controlled visual sequence: the request establishes the source material, the intended subject behavior, the camera language, and the atmosphere of the finished shot. The production route keeps that workflow explicit instead of hiding its input assumptions behind a generic video-generation label.

In practice, this route accepts video as creative context and exposes duration for delivery planning. That makes it suitable for shot-based pipelines where teams must preserve a source, direct a transformation, or control the final format without losing sight of the model's central task. Write prompts as a compact shot plan—subject, action, setting, camera, light, and timing—then use the structured fields for constraints that should remain deterministic across iterations.

Highlights

Temporal continuation. Extends an existing clip beyond its current endpoint while the prompt directs the new action and visual continuity.
Controllable shot length. Duration or frame-count controls make timing an explicit part of the generation brief.
Temporal coherence. The LTX 2.0 generation path is designed around continuous motion across a shot, not a collection of unrelated frames.
Production iteration. Seed and sampling controls support repeatable comparisons when refining motion, framing, and visual treatment.

Pricing

The request price is calculated with params.duration * 0.10.

Configuration	Price
duration=1	`$0.100000`
duration=2	`$0.200000`
duration=3	`$0.300000`
duration=4	`$0.400000`
duration=5	`$0.500000`
duration=6	`$0.600000`
duration=7	`$0.700000`
duration=8	`$0.800000`
duration=9	`$0.900000`
duration=10	`$1.000000`
duration=11	`$1.100000`
duration=12	`$1.200000`
duration=13	`$1.300000`
duration=14	`$1.400000`
duration=15	`$1.500000`
duration=16	`$1.600000`
duration=17	`$1.700000`
duration=18	`$1.800000`
duration=19	`$1.900000`
duration=20	`$2.000000`

The model card records a base price of $0.100000; the formula above determines usage-priced requests.

When to Use

Scenario	Recommendation
Choose this route	Use it when the deliverable specifically calls for video continuation, rather than a neighboring generation mode.
Prepare the source	Provide video in the format described by the request schema.
Direct the shot	Describe the subject, action, environment, camera movement, lighting, and temporal progression in that order.
Control continuity	Use endpoint frames, reference media, strength, or audio controls when those fields are available instead of burying hard constraints in prose.
Plan delivery	Set duration, frame count, resolution, and aspect ratio explicitly when the schema exposes them, then compare iterations with a stable seed where supported.

Prompt Guide

For video continuation, describe one coherent shot rather than a list of visual keywords. Put the main subject and action first, follow with location and staging, then add camera movement, lens or framing, lighting, mood, and any timed change. Keep URLs and hard delivery choices in their dedicated fields.

{
  "prompt": "Continue the motion smoothly",
  "duration": 5,
  "video": "https://static.sandbase.ai/examples/lightricks/ltx-2.0-pro/extend/input_video_0.mp4"
}

Technical Specs

Specification	Value
Model ID	`lightricks/ltx-2.0-pro/extend`
Required inputs	`prompt`
Execution	Asynchronous generation job
Request controls	3 documented fields
Output	`url`, `content_type`

Request fields

Field	Type and constraints
`video`	string; Optional
`prompt`	string; Required
`duration`	integer; Optional; Range: 1–20; Default: 5