Lightricks LTX 2.5 Fast Text To Video API | 定价与文档

lightricks/ltx-2.5/text-to-video/fast

LTX 2.5 Fast Text To Video 根据快速 720p–4K 草稿的提示生成同步音频-视频，无需图像或音频参考。

1. 快速开始

使用 RunComfy 的 API 运行 lightricks/ltx-2.5/text-to-video/fast。可接受的输入与输出请参阅模型的数据结构说明。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/lightricks/ltx-2.5/text-to-video/fast \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A jazz trio performs in a wood-paneled club: upright bass, brushed drums, and a trumpet player in a midnight-blue suit. Warm tungsten sconces, soft haze, audience silhouettes in the foreground. Slow lateral track left-to-right past the band, then a gentle push-in on the trumpet bell. Analog film grain, intimate documentary feel. Audio: live trumpet melody, soft brushwork, quiet room murmur. No text, no watermark."
  }'

2. 身份验证

将 YOUR_API_TOKEN 环境变量设置为您的 API 密钥（在个人资料中管理密钥），并在每个请求的 Authorization 标头中以 Bearer 令牌形式携带： Authorization: Bearer $YOUR_API_TOKEN。

3. API 参考

提交请求

提交异步生成任务，将立即获得 request_id 以及用于查询状态、获取结果和取消的 URL。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/lightricks/ltx-2.5/text-to-video/fast \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A jazz trio performs in a wood-paneled club: upright bass, brushed drums, and a trumpet player in a midnight-blue suit. Warm tungsten sconces, soft haze, audience silhouettes in the foreground. Slow lateral track left-to-right past the band, then a gentle push-in on the trumpet bell. Analog film grain, intimate documentary feel. Audio: live trumpet melody, soft brushwork, quiet room murmur. No text, no watermark."
  }'

查询请求状态

根据 request_id 获取当前状态（"in_queue"、"in_progress"、"completed" 或 "cancelled"）。

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

获取请求结果

获取指定 request_id 的最终输出与元数据；若任务未完成，响应会返回当前状态，便于继续轮询。

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

取消请求

通过 request_id 取消排队中的任务；进行中的任务无法取消。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. 文件输入

托管文件（URL）

请提供可公网访问的 HTTPS 地址。确保目标主机允许服务端拉取（无需登录或 Cookie）、未被限流或拦截爬虫。建议：图片 ≤ 50 MB（约 4K），视频 ≤ 100 MB（约 720p 下 2–5 分钟）。私有资源请使用稳定或预签名 URL。

5. 数据结构

输入结构

{
  "type": "object",
  "title": "输入结构",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "提示词",
      "description": "描述视频场景、动作和音频的文本提示。",
      "type": "string",
      "default": "A jazz trio performs in a wood-paneled club: upright bass, brushed drums, and a trumpet player in a midnight-blue suit. Warm tungsten sconces, soft haze, audience silhouettes in the foreground. Slow lateral track left-to-right past the band, then a gentle push-in on the trumpet bell. Analog film grain, intimate documentary feel. Audio: live trumpet melody, soft brushwork, quiet room murmur. No text, no watermark."
    },
    "duration": {
      "title": "时长",
      "description": "视频长度以秒为单位。使用 auto 让模型从提示中进行选择。",
      "type": "string",
      "enum": [
        "auto",
        "6",
        "8",
        "10",
        "12",
        "14",
        "16",
        "18",
        "20"
      ],
      "default": "10"
    },
    "resolution": {
      "title": "分辨率",
      "description": "生成视频的输出分辨率。",
      "type": "string",
      "enum": [
        "720p",
        "1080p",
        "1440p",
        "2160p"
      ],
      "default": "1080p"
    },
    "aspect_ratio": {
      "title": "宽高比",
      "description": "生成视频的输出宽高比。",
      "type": "string",
      "enum": [
        "16:9",
        "9:16"
      ],
      "default": "16:9"
    },
    "fps": {
      "title": "帧率",
      "description": "生成视频的每秒帧数。",
      "type": "integer",
      "enum": [
        24,
        25,
        48,
        50
      ],
      "default": 25
    },
    "generate_audio": {
      "title": "生成音频",
      "description": "是否生成与视频同步的音频。",
      "type": "boolean",
      "default": true
    },
    "camera_motion": {
      "title": "运镜（可选）",
      "description": "可选的摄像机运动预设。对于仅提示的相机方向，保持未设置。",
      "type": "string",
      "enum": [
        "dolly_in",
        "dolly_out",
        "dolly_left",
        "dolly_right",
        "jib_up",
        "jib_down",
        "static",
        "focus_shift"
      ]
    }
  }
}

输出结构

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "单张图片 URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "单个视频 URL"
      },
      "images": {
        "type": "array",
        "description": "多张图片 URL",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "多个视频 URL",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

RunComfy

RunComfy 是首选的 ComfyUI 平台，提供 ComfyUI 在线环境和服务，以及 ComfyUI 工作流具有惊艳的视觉效果。 RunComfy还提供 AI Models, 帮助艺术家利用最新的AI工具创作出令人惊叹的艺术作品。

1. 快速开始

使用 RunComfy 的 API 运行 lightricks/ltx-2.5/text-to-video/fast。可接受的输入与输出请参阅模型的数据结构说明。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/lightricks/ltx-2.5/text-to-video/fast \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A jazz trio performs in a wood-paneled club: upright bass, brushed drums, and a trumpet player in a midnight-blue suit. Warm tungsten sconces, soft haze, audience silhouettes in the foreground. Slow lateral track left-to-right past the band, then a gentle push-in on the trumpet bell. Analog film grain, intimate documentary feel. Audio: live trumpet melody, soft brushwork, quiet room murmur. No text, no watermark."
  }'

3. API 参考

提交请求

提交异步生成任务，将立即获得 request_id 以及用于查询状态、获取结果和取消的 URL。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/lightricks/ltx-2.5/text-to-video/fast \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A jazz trio performs in a wood-paneled club: upright bass, brushed drums, and a trumpet player in a midnight-blue suit. Warm tungsten sconces, soft haze, audience silhouettes in the foreground. Slow lateral track left-to-right past the band, then a gentle push-in on the trumpet bell. Analog film grain, intimate documentary feel. Audio: live trumpet melody, soft brushwork, quiet room murmur. No text, no watermark."
  }'

查询请求状态

根据 request_id 获取当前状态（"in_queue"、"in_progress"、"completed" 或 "cancelled"）。

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

获取请求结果

获取指定 request_id 的最终输出与元数据；若任务未完成，响应会返回当前状态，便于继续轮询。

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

取消请求

通过 request_id 取消排队中的任务；进行中的任务无法取消。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. 文件输入

托管文件（URL）

5. 数据结构

输入结构

{
  "type": "object",
  "title": "输入结构",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "提示词",
      "description": "描述视频场景、动作和音频的文本提示。",
      "type": "string",
      "default": "A jazz trio performs in a wood-paneled club: upright bass, brushed drums, and a trumpet player in a midnight-blue suit. Warm tungsten sconces, soft haze, audience silhouettes in the foreground. Slow lateral track left-to-right past the band, then a gentle push-in on the trumpet bell. Analog film grain, intimate documentary feel. Audio: live trumpet melody, soft brushwork, quiet room murmur. No text, no watermark."
    },
    "duration": {
      "title": "时长",
      "description": "视频长度以秒为单位。使用 auto 让模型从提示中进行选择。",
      "type": "string",
      "enum": [
        "auto",
        "6",
        "8",
        "10",
        "12",
        "14",
        "16",
        "18",
        "20"
      ],
      "default": "10"
    },
    "resolution": {
      "title": "分辨率",
      "description": "生成视频的输出分辨率。",
      "type": "string",
      "enum": [
        "720p",
        "1080p",
        "1440p",
        "2160p"
      ],
      "default": "1080p"
    },
    "aspect_ratio": {
      "title": "宽高比",
      "description": "生成视频的输出宽高比。",
      "type": "string",
      "enum": [
        "16:9",
        "9:16"
      ],
      "default": "16:9"
    },
    "fps": {
      "title": "帧率",
      "description": "生成视频的每秒帧数。",
      "type": "integer",
      "enum": [
        24,
        25,
        48,
        50
      ],
      "default": 25
    },
    "generate_audio": {
      "title": "生成音频",
      "description": "是否生成与视频同步的音频。",
      "type": "boolean",
      "default": true
    },
    "camera_motion": {
      "title": "运镜（可选）",
      "description": "可选的摄像机运动预设。对于仅提示的相机方向，保持未设置。",
      "type": "string",
      "enum": [
        "dolly_in",
        "dolly_out",
        "dolly_left",
        "dolly_right",
        "jib_up",
        "jib_down",
        "static",
        "focus_shift"
      ]
    }
  }
}

输出结构

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "单张图片 URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "单个视频 URL"
      },
      "images": {
        "type": "array",
        "description": "多张图片 URL",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "多个视频 URL",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

LTX 2.5 Fast Text To Video 根据快速 720p–4K 草稿的提示生成同步音频-视频，无需图像或音频参考。

目录

1. 快速开始

2. 身份验证

3. API 参考

提交请求

查询请求状态

获取请求结果

取消请求

4. 文件输入

托管文件（URL）

5. 数据结构

输入结构

输出结构

LTX 2.5 Fast Text To Video 根据快速 720p–4K 草稿的提示生成同步音频-视频，无需图像或音频参考。

目录

1. 快速开始

2. 身份验证

3. API 参考

提交请求

查询请求状态

获取请求结果

取消请求

4. 文件输入

托管文件（URL）

5. 数据结构

输入结构

输出结构

LTX 2.5 Fast Text To Video：将 AV 草稿同步到 Models and API 上的 4K | RunComfy

LTX 2.5 Fast Text To Video 根据快速 720p–4K 草稿的提示生成同步音频-视频，无需图像或音频参考。

目录

1. 快速开始

2. 身份验证

3. API 参考

提交请求

查询请求状态

获取请求结果

取消请求

4. 文件输入

托管文件（URL）

5. 数据结构

输入结构

输出结构

LTX 2.5 Fast Text To Video：将 AV 草稿同步到 Models and API 上的 4K | RunComfy

LTX 2.5 Fast Text To Video 根据快速 720p–4K 草稿的提示生成同步音频-视频，无需图像或音频参考。

目录

1. 快速开始

2. 身份验证

3. API 参考

提交请求

查询请求状态

获取请求结果

取消请求

4. 文件输入

托管文件（URL）

5. 数据结构

输入结构

输出结构