API reference · Lightricks

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

Integrate this model through SandBase's unified API, with production-ready schemas and examples.

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

Model IDlightricks/ltx-2-19b/video-to-video

Input Schema

27 parameters · 2 required · 25 optional

Parameter	Type	Required	Description
`image`	string	Required	An optional URL of an image to use as the first frame of the video.
`prompt`	string	Required	The prompt to generate the video from.
`fps`	number	Optional	The frames per second of the generated video. · Min: 1 · Max: 60 · Default: 25
`seed`	integer	Optional	The seed for the random number generator.
`audio`	string	Optional	An optional URL of an audio to use as the audio for the video. If not provided, any audio present in the input video will be used.
`video`	string	Optional	The URL of the video to generate the video from.
`ic_lora`	string	Optional	The type of IC-LoRA to load. In-Context LoRA weights are used to condition the video based on edge, depth, or pose videos. Only change this from `match_preprocessor` if your videos are already preprocessed (or you are using the detailer.) · Options: match_preprocessor, canny, depth, pose, detailer, none · Default: "match_preprocessor" match_preprocessorcannydepthposedetailernone
`end_image`	string	Optional	The URL of the image to use as the end of the video.
`num_frames`	integer	Optional	The number of frames to generate. · Min: 9 · Max: 481 · Default: 121
`video_size`	string	Optional	The size of the generated video. · Options: auto, square_hd, square, portrait_4_3, portrait_16_9, landscape_4_3, landscape_16_9 · Default: "auto" autosquare_hdsquareportrait_4_3portrait_16_9landscape_4_3landscape_16_9
`camera_lora`	string	Optional	The camera LoRA to use. This allows you to control the camera movement of the generated video more accurately than just prompting the model to move the camera. · Options: dolly_in, dolly_out, dolly_left, dolly_right, jib_up, jib_down, static, none · Default: "none" dolly_indolly_outdolly_leftdolly_rightjib_upjib_downstaticnone
`preprocessor`	string	Optional	The preprocessor to use for the video. When a preprocessor is used and `ic_lora_type` is set to `match_preprocessor`, the IC-LoRA will be loaded based on the preprocessor type. · Options: depth, canny, pose, none · Default: "none" depthcannyposenone
`ic_lora_scale`	number	Optional	The scale of the IC-LoRA to use. This allows you to control the strength of the IC-LoRA. · Min: 0 · Max: 1 · Default: 1
`video_quality`	string	Optional	The quality of the generated video. · Options: low, medium, high, maximum · Default: "high" lowmediumhighmaximum
`audio_strength`	number	Optional	Audio conditioning strength. Lower values represent more freedom given to the model to change the audio content. · Min: 0 · Max: 1 · Default: 1
`generate_audio`	boolean	Optional	Whether to generate audio for the video. · Default: true
`guidance_scale`	number	Optional	The guidance scale to use. · 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
`use_multiscale`	boolean	Optional	Whether to use multi-scale generation. If True, the model will generate the video at a smaller scale first, then use the smaller video to guide the generation of a video at or above your requested size. This results in better coherence and details. · Default: true
`video_strength`	number	Optional	Video conditioning strength. Lower values represent more freedom given to the model to change the video content. · Min: 0 · Max: 1 · Default: 1
`match_input_fps`	boolean	Optional	When true, match the output FPS to the input video's FPS instead of using the default target FPS. · Default: true
`video_write_mode`	string	Optional	The write mode of the generated video. · Options: fast, balanced, small · Default: "balanced" fastbalancedsmall
`camera_lora_scale`	number	Optional	The scale of the camera LoRA to use. This allows you to control the camera movement of the generated video more accurately than just prompting the model to move the camera. · Min: 0 · Max: 1 · Default: 1
`video_output_type`	string	Optional	The output type of the generated video. · Options: X264 (.mp4), VP9 (.webm), PRORES4444 (.mov), GIF (.gif) · Default: "X264 (.mp4)" X264 (.mp4)VP9 (.webm)PRORES4444 (.mov)GIF (.gif)
`end_image_strength`	number	Optional	The strength of the end image to use for the video generation. · Min: 0 · Max: 1 · Default: 1
`match_video_length`	boolean	Optional	When enabled, the number of frames will be calculated based on the video duration and FPS. When disabled, use the specified num_frames. · Default: true
`num_inference_steps`	integer	Optional	The number of inference steps to use. · Min: 8 · Max: 50 · Default: 40

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/video-to-video",
  "fps": 25,
  "video": "https://static.sandbase.ai/examples/lightricks/ltx-2-19b/video-to-video/input_video_0.mp4",
  "prompt": "black-and-white video, a cowboy walks through a dusty town, film grain",
  "ic_lora": "match_preprocessor",
  "num_frames": 121,
  "video_size": "auto",
  "camera_lora": "none",
  "preprocessor": "none",
  "ic_lora_scale": 1,
  "video_quality": "high",
  "audio_strength": 1,
  "generate_audio": true,
  "guidance_scale": 3,
  "image_strength": 1,
  "use_multiscale": true,
  "video_strength": 1,
  "match_input_fps": true,
  "video_write_mode": "balanced",
  "camera_lora_scale": 1,
  "video_output_type": "X264 (.mp4)",
  "end_image_strength": 1,
  "match_video_length": true,
  "num_inference_steps": 40
}'

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

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