lightricks/ltx-2-19b/image-to-video/lora

Name: LTX-2 19B
Author: Lightricks

Ltx 2 19b Lora is Lightricks's image-to-video AI model. Bring static images to life with fluid animation, consistent character motion, and professional-grade video output.

Input

Prompt(string)

The prompt used for the generation.

Image URL or upload(string)

Upload

PNG, JPEG, WebP, or GIF · 20 MiB maximum

The URL of the image to generate the video from.

This field is required.

Image URL or upload(string)

Upload

PNG, JPEG, WebP, or GIF · 20 MiB maximum

The URL of the image to use as the end of the video.

Generate Audio(boolean)

Whether to generate audio for the video.

Image Strength(number)

The strength of the image to use for the video generation. Range: 0 to 1.

Interpolation Direction(string)

The direction to interpolate the image sequence in. 'Forward' goes from the start image to the end image, 'Backward' goes from the end image to the start image. Allowed values: forward, backward.

End Image Strength(number)

The strength of the end image to use for the video generation. Range: 0 to 1.

Seed(integer)

The seed for the random number generator.

Loras(array)

Enter a JSON array.

Guidance Scale(number)

110

Range: 1 to 10.

Num Inference Steps(integer)

850

Range: 8 to 50.

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-2-19b/image-to-video/lora

Input Schema

11 parameters · 2 required · 9 optional

Parameter	Type	Required	Description
`image`	string	Required	The URL of the image to generate the video from.
`prompt`	string	Required	The prompt used for the generation.
`seed`	integer	Optional	The seed for the random number generator.
`loras`	array	Optional	—
`end_image`	string	Optional	The URL of the image to use as the end of the video.
`generate_audio`	boolean	Optional	Whether to generate audio for the video. · Default: true
`guidance_scale`	number	Optional	Min: 1 · Max: 10 · Default: 3
`image_strength`	number	Optional	The strength of the image to use for the video generation. · Min: 0 · Max: 1 · Default: 1
`end_image_strength`	number	Optional	The strength of the end image to use for the video generation. · Min: 0 · Max: 1 · Default: 1
`num_inference_steps`	integer	Optional	Min: 8 · Max: 50 · Default: 40
`interpolation_direction`	string	Optional	The direction to interpolate the image sequence in. 'Forward' goes from the start image to the end image, 'Backward' goes from the end image to the start image. · Options: forward, backward · Default: "forward" forwardbackward

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-2-19b/image-to-video/lora",
  "image": "https://static.sandbase.ai/examples/lightricks/ltx-2-19b/image-to-video/lora/input_image_0.jpg",
  "prompt": "A woman stands still amid a busy neon-lit street at night. The camera slowly dollies in toward her face as people blur past, their motion emphasizing her calm presence. City lights flicker and reflections shift across her denim jacket.",
  "generate_audio": true,
  "guidance_scale": 3,
  "image_strength": 1,
  "end_image_strength": 1,
  "num_inference_steps": 40,
  "interpolation_direction": "forward"
}'

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

← Back to LTX-2 19B

API README

LTX-2 19B

LTX-2 19B is a image-to-video animation with custom LoRA adapters endpoint in the LTX 2 19B 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 LoRA-enabled route keeps that workflow explicit instead of hiding its input assumptions behind a generic video-generation label.

In practice, this route accepts image, end image, loras as creative context and exposes generate audio, image strength 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

Still-image animation. The required image is treated as the opening visual state; the prompt describes the movement that should unfold from it.
Directed landing frame. end_image can set a destination composition, enabling an intentional transition rather than unconstrained drift.
Source-adherence control. image_strength adjusts how firmly the generated clip follows the source image.
Route-specific LoRA conditioning. The loras array adds learned styling or concepts to this image to video workflow without replacing its required source inputs. For lightricks/ltx-2-19b/image-to-video/lora, this task-specific control is documented alongside the route’s own required inputs.

Pricing

Billing unit	Price
Base request	`$0.002000`

When to Use

Scenario	Recommendation
Choose this route	Use it when the deliverable specifically calls for image-to-video animation with custom LoRA adapters, rather than a neighboring generation mode.
Prepare the source	Provide image 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 image-to-video animation with custom LoRA adapters, 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": "A woman stands still amid a busy neon-lit street at night. The camera slowly dollies in toward her face as people blur past, their motion emphasizing her calm presence. City lights flicker and reflections shift across her denim jacket.",
  "image": "https://static.sandbase.ai/examples/lightricks/ltx-2-19b/image-to-video/lora/input_image_0.jpg",
  "generate_audio": true,
  "end_image": "https://example.com/reference.jpg"
}

Technical Specs

Specification	Value
Model ID	`lightricks/ltx-2-19b/image-to-video/lora`
Required inputs	`prompt`, `image`
Execution	Asynchronous generation job
Request controls	11 documented fields
Output	`url`, `content_type`

Request fields

Field	Type and constraints
`seed`	integer; Optional
`image`	string; Required
`loras`	array; Optional
`prompt`	string; Required
`end_image`	string; Optional
`generate_audio`	boolean; Optional; Default: true
`guidance_scale`	number; Optional; Range: 1–10; Default: 3
`image_strength`	number; Optional; Range: 0–1; Default: 1
`end_image_strength`	number; Optional; Range: 0–1; Default: 1
`num_inference_steps`	integer; Optional; Range: 8–50; Default: 40
`interpolation_direction`	string; Optional; Options: forward, backward; Default: "forward"