Ltx 2.3 Quality

curl -X POST https://superpowers.tools/v1/run \
  -H 'Authorization: Bearer $SP_KEY' \
  -d '{"tool":"fal.ltx-2.3-quality-outpaint","input":{"prompt":"","video_url":""},"idempotency_key":"example-request-1"}'

{
  "type": "object",
  "required": [
    "prompt",
    "video_url"
  ],
  "properties": {
    "sync_mode": {
      "type": "boolean",
      "description": "If True, the media is returned as a data URI inline in the response. Useful for short-lived requests and tests.",
      "default": false
    },
    "aspect_ratio": {
      "type": "string",
      "description": "Target aspect ratio for the outpainted video. Choose a different ratio than the input video to extend the frame cleanly, e.g. use 16:9 for a 4:3 source.",
      "default": "16:9",
      "enum": [
        "21:9",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16",
        "9:21"
      ]
    },
    "num_frames": {
      "type": "integer",
      "description": "The number of frames to generate.",
      "default": 121
    },
    "num_inference_steps": {
      "type": "integer",
      "description": "Number of inference steps. Defaults to 15 and can be increased up to 30.",
      "default": 15
    },
    "source_scale": {
      "type": "number",
      "description": "Scale of the source video inside the target canvas before outpainting. 1.0 uses the largest source size that fits the target canvas, which is recommended for true aspect-ratio outpainting such as 4:3 to 16:9. Lower values create a zoom-out border around the source and are less stable.",
      "default": 1
    },
    "negative_prompt": {
      "type": "string",
      "description": "The negative prompt to steer generation away from.",
      "default": "color distortion, overexposure, static, blurry details, subtitles, style, artwork, painting, frame, still, dim overall tone, worst quality, low quality, JPEG compression artifacts, ugly, mutilated, extra fingers, poorly drawn hands, poorly drawn face, deformed, disfigured, malformed limbs, fused fingers, motionless frame, cluttered background, three legs, crowded background, walking backwards"
    },
    "resolution": {
      "type": "string",
      "description": "Legacy exact target canvas size. For new requests, prefer aspect_ratio with output_resolution; this field remains supported for backwards compatibility.",
      "default": "landscape_16_9",
      "enum": [
        "auto",
        "square_hd",
        "square",
        "portrait_4_3",
        "portrait_16_9",
        "landscape_4_3",
        "landscape_16_9"
      ]
    },
    "enable_prompt_expansion": {
      "type": "boolean",
      "description": "Whether to enable prompt expansion.",
      "default": true
    },
    "seed": {
      "type": "integer",
      "description": "Random seed for reproducibility. If None, a random seed is chosen."
    },
    "guidance_scale": {
      "type": "number",
      "description": "Classifier-free guidance scale. The default is tuned for fast, high-quality generation.",
      "default": 1
    },
    "output_resolution": {
      "type": "string",
      "description": "Output resolution tier. 480p is faster, 720p is the default balance, and 1080p gives a larger canvas when it fits LTX limits.",
      "default": "720p",
      "enum": [
        "480p",
        "720p",
        "1080p"
      ]
    },
    "prompt": {
      "type": "string",
      "description": "The prompt to guide the outpainted video generation."
    },
    "enable_safety_checker": {
      "type": "boolean",
      "description": "Whether to enable the safety checker.",
      "default": true
    },
    "generate_audio": {
      "type": "boolean",
      "description": "Whether to include audio in the returned video. When disabled, the final MP4 is returned without an audio track.",
      "default": true
    },
    "video_write_mode": {
      "type": "string",
      "description": "The write mode of the generated video.",
      "default": "balanced",
      "enum": [
        "fast",
        "balanced",
        "small"
      ]
    },
    "video_strength": {
      "type": "number",
      "description": "Strength of the IC-LoRA video guide for the original content. Higher values preserve the source video more strongly inside the outpainted canvas.",
      "default": 1
    },
    "video_quality": {
      "type": "string",
      "description": "The quality preset of the generated video.",
      "default": "high",
      "enum": [
        "low",
        "medium",
        "high",
        "maximum"
      ]
    },
    "video_url": {
      "type": "string",
      "description": "The source video to spatially outpaint."
    },
    "frames_per_second": {
      "type": "number",
      "description": "Frames per second of the generated video.",
      "default": 24
    }
  }
}