API reference · Lightricks

lightricks/ltx-2.3-22b/reference-video-to-video/lora

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VIDEOAsyncOpen model

Production endpoint

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OpenAI-compatible endpoint with unified authentication and usage tracking.

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

Model IDlightricks/ltx-2.3-22b/reference-video-to-video/lora

Input Schema

37 parameters · 2 required · 35 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: 24
`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.
`loras`	object[]	Optional	The LoRAs to use for the generation.
`video`	string	Optional	The URL of the video to reference.
`end_image`	string	Optional	The URL of the image to use as the end of the video.
`scheduler`	string	Optional	The scheduler to use. · Options: ltx2, linear_quadratic, beta · Default: "ltx2" ltx2linear_quadraticbeta
`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
`ic_lora_type`	string	Optional	The IC LoRA type to use for the generation. · Options: match_preprocessor, union, detailer, none · Default: "union" match_preprocessoruniondetailernone
`preprocessor`	string	Optional	The preprocessor to use for the generation. · Options: depth, canny, pose, none · Default: "none" depthcannyposenone
`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
`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
`audio_cfg_scale`	number	Optional	The Classifier-Free Guidance (CFG) scale for the audio. Higher values result in more consistent and focused audio content. · Min: 1 · Max: 20 · Default: 7
`audio_stg_scale`	number	Optional	The Spatiotemporal Guidance (STG) scale for the audio. Higher values result in more consistent and focused audio content. · Min: 0 · Max: 20 · Default: 0
`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_cfg_scale`	number	Optional	The Classifier-Free Guidance (CFG) scale for the video. Higher values result in more consistent and focused video content. · Min: 1 · Max: 20 · Default: 3
`video_stg_scale`	number	Optional	The Spatiotemporal Guidance (STG) scale for the video. Higher values result in more consistent and focused video content. · Min: 0 · Max: 20 · Default: 0
`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)
`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
`audio_modality_scale`	number	Optional	The modality scale for the audio. Controls the ratio between video and audio modalities. · Min: 0 · Max: 10 · Default: 3
`use_restart_sampling`	boolean	Optional	Whether to use restart sampling. This will inject a small amount of noise during each denoising step, which can help improve the quality of the generated video. · Default: false
`video_modality_scale`	number	Optional	The modality scale for the video. Controls the ratio between video and audio modalities. · Min: 0 · Max: 10 · Default: 3
`audio_rescaling_scale`	number	Optional	The rescaling scale for the audio. Controls the ratio between classifier-free guidance and spatiotemporal guidance. · Min: 0 · Max: 1 · Default: 0.7
`video_rescaling_scale`	number	Optional	The rescaling scale for the video. Controls the ratio between classifier-free guidance and spatiotemporal guidance. · Min: 0 · Max: 1 · Default: 0.7
`gradient_estimation_gamma`	number	Optional	The gamma of gradient estimation during denoising. Set to 0 to disable. · Min: 0 · Max: 10 · Default: 2
`distill_lora_first_pass_scale`	number	Optional	The scale of the distill LoRA to use for the first pass. Set to 0 to disable. · Min: 0 · Max: 1 · Default: 0.2
`distill_lora_second_pass_scale`	number	Optional	The scale of the distill LoRA to use for the second and subsequent passes. · Min: 0 · Max: 1 · Default: 0.5

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-2.3-22b/reference-video-to-video/lora",
  "fps": 24,
  "video": "https://static.sandbase.ai/examples/lightricks/ltx-2.3-22b/reference-video-to-video/lora/output_url_0.mp4",
  "prompt": "style: cinematic/realistic. A man wearing a baseball cap walks through a modern town. He holds a coffee cup.",
  "scheduler": "ltx2",
  "num_frames": 121,
  "video_size": "auto",
  "camera_lora": "none",
  "ic_lora_type": "union",
  "preprocessor": "none",
  "video_quality": "high",
  "audio_strength": 1,
  "generate_audio": true,
  "use_multiscale": true,
  "video_strength": 1,
  "audio_cfg_scale": 7,
  "audio_stg_scale": 0,
  "match_input_fps": true,
  "video_cfg_scale": 3,
  "video_stg_scale": 0,
  "video_write_mode": "balanced",
  "camera_lora_scale": 1,
  "video_output_type": "X264 (.mp4)",
  "match_video_length": true,
  "num_inference_steps": 40,
  "audio_modality_scale": 3,
  "use_restart_sampling": false,
  "video_modality_scale": 3,
  "audio_rescaling_scale": 0.7,
  "video_rescaling_scale": 0.7,
  "gradient_estimation_gamma": 2,
  "distill_lora_first_pass_scale": 0.2,
  "distill_lora_second_pass_scale": 0.5
}'

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

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