GET
/v1/schemas/fal/video/fal-ai/ltx-2-19b/image-to-video
Accept:
| field | recorded source |
|---|---|
| schema | Source linked above.Source tracebc3482f6871cabd4eca0314eacbf9c23d0d4125cb17c8d683a617375131a53b7{
"fetchedAt": 1783329487,
"extractorVersion": "1",
"verifiedAt": null
} |
Request body
24 properties · 2 required · 1 $defs| property | type | description | constraints |
|---|---|---|---|
| prompt* | string | The prompt used for the generation. | |
| image_url* | string | The URL of the image to generate the video from. | |
| num_inference_steps | integer | The number of inference steps to use. | 8 ≤ n ≤ 50 · default: 40 |
| enable_prompt_expansion | boolean | Whether to enable prompt expansion. | default: true |
| enable_safety_checker | boolean | Whether to enable the safety checker. | default: true |
| end_image_strength | number | The strength of the end image to use for the video generation. | 0 ≤ n ≤ 1 · default: 1 |
| camera_lora_scale | number | 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. | 0 ≤ n ≤ 1 · default: 1 |
| video_size | ImageSize | enum | The size of the generated video. | default: "auto" |
| guidance_scale | number | The guidance scale to use. | 1 ≤ n ≤ 10 · default: 3 |
| video_output_type | enum | The output type of the generated video. | X264 (.mp4) | VP9 (.webm) | PRORES4444 (.mov) | GIF (.gif) · default: "X264 (.mp4)" |
| video_quality | enum | The quality of the generated video. | low | medium | high | maximum · default: "high" |
| acceleration | enum | The acceleration level to use. | none | regular | high | full · default: "regular" |
| generate_audio | boolean | Whether to generate audio for the video. | default: true |
| seed | integer | The seed for the random number generator. | nullable |
| end_image_url | string | The URL of the image to use as the end of the video. | nullable |
| fps | number | The frames per second of the generated video. | 1 ≤ n ≤ 60 · default: 25 |
| negative_prompt | string | The negative prompt to generate the video from. | default: "blurry, out of focus, overexpos… |
| image_strength | number | The strength of the image to use for the video generation. | 0 ≤ n ≤ 1 · default: 1 |
| camera_lora | enum | 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. | dolly_in | dolly_out | dolly_left | dolly_right | jib_up | jib_down · +2 more · default: "none" |
| use_multiscale | boolean | 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_write_mode | enum | The write mode of the generated video. | fast | balanced | small · default: "balanced" |
| sync_mode | boolean | If `True`, the media will be returned as a data URI and the output data won't be available in the request history. | default: false |
| num_frames | integer | The number of frames to generate. | 9 ≤ n ≤ 481 · default: 121 |
| interpolation_direction | enum | 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. | forward | backward · default: "forward" |
Types
1 $defsImageSizeobject
| height | integer | The height of the generated image. | 0 < n ≤ 14142 · default: 512 |
| width | integer | The width of the generated image. | 0 < n ≤ 14142 · default: 512 |
Validate a payload
before you spend tokensshell
$ curl -X POST https://modelschemas.com/v1/validate \
-d '{"provider":"fal","endpointId":"fal-ai/ltx-2-19b/image-to-video","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}