{
  "openapi": "3.1.0",
  "info": {
    "title": "Runware API - FLUX Video Edit [fast]",
    "summary": "Fast prompt-driven video editing that preserves the source clip's motion, timing, framing, and audio",
    "description": "FLUX Video Edit [fast] is Black Forest Labs' instruction-based video editing model for changing an existing clip with a natural-language prompt. It can add, remove, or replace objects and characters; alter settings, styles, actions, and on-screen text; and revise or translate dialogue while preserving unedited motion, camera work, timing, framing, and audio. It supports source clips up to 15 seconds and produces 24 FPS output at up to 720p while retaining the original duration and aspect ratio.",
    "version": "1.0.0",
    "x-model-id": "bfl-flux-video-edit-fast",
    "x-air-id": "bfl:flux@video-edit-fast",
    "x-status": "live",
    "x-creator": {
      "id": "black-forest-labs",
      "name": "Black Forest Labs",
      "logo": "https://assets.runware.ai/07bfd96d-d2df-4d52-aba5-636fb27874be.png"
    },
    "x-capabilities": [
      "video-to-video",
      "edit",
      "checkpoint"
    ],
    "x-released-at": "2026-09-09T00:00:00Z",
    "x-cover-image": "https://assets.runware.ai/covers/bfl-flux-video-edit-fast.jpg",
    "x-pricing": {
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        {
          "configuration": "video-edit",
          "price": "$0.181",
          "latencyMs": 54317,
          "exampleId": "municipal-water-documentary-title-sequence"
        },
        {
          "configuration": "video-edit",
          "price": "$0.181",
          "latencyMs": 44866,
          "exampleId": "widescreen-ceramic-workshop-outpaint"
        },
        {
          "configuration": "video-edit",
          "price": "$0.181",
          "latencyMs": 178240,
          "exampleId": "lighthouse-archive-film-restoration"
        },
        {
          "configuration": "video-edit",
          "price": "$0.181",
          "latencyMs": 47663,
          "exampleId": "falconry-exhibition-miniature-reel"
        }
      ]
    }
  },
  "servers": [
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      "description": "Runware REST API"
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  "components": {
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    "schemas": {
      "AuthenticationTask": {
        "title": "Authentication",
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        "type": "object",
        "x-response-schema": "https://schemas.runware.ai/responses/utilities/authentication.json",
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            "title": "Connection Session UUID",
            "description": "Optional session UUID to resume a previous connection and receive any buffered results.",
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        },
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          "apiKey"
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      },
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              ],
              "maximum": 52428800
            },
            {
              "operation": "duration",
              "parameters": [
                "inputs.video"
              ],
              "minimum": 0.7,
              "maximum": 15
            },
            {
              "operation": "width",
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              "scope": "each"
            },
            {
              "operation": "height",
              "parameters": [
                "inputs.video"
              ],
              "minimum": 160,
              "scope": "each"
            }
          ],
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              "description": "Identifier of the model to use for generation.",
              "type": "string",
              "const": "bfl:flux@video-edit-fast"
            },
            "inputs": {
              "title": "Inputs",
              "description": "The unified payload wrapper for complex media assets dictating image, video or audio inference constraints.",
              "type": "object",
              "properties": {
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                  "title": "Video",
                  "description": "Video input (UUID or URL). The output keeps the source duration, aspect ratio and audio, at 24 fps. A source above 720p is downscaled to 720p.",
                  "type": "string",
                  "anyOf": [
                    {
                      "format": "uuid"
                    },
                    {
                      "format": "uri"
                    }
                  ]
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              },
              "required": [
                "video"
              ],
              "additionalProperties": false
            },
            "positivePrompt": {
              "title": "Positive Prompt",
              "description": "Text prompt describing elements to include in the generated output.",
              "type": "string",
              "minLength": 1,
              "maxLength": 4096
            },
            "settings": {
              "title": "Settings",
              "description": "Global inference settings.",
              "type": "object",
              "properties": {
                "safetyTolerance": {
                  "title": "Safety Tolerance",
                  "description": "Tolerance level for content moderation. Lower values are stricter; higher values are more permissive.",
                  "type": "integer",
                  "minimum": 0,
                  "maximum": 4,
                  "default": 2
                }
              },
              "additionalProperties": false
            },
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              "title": "Task Type",
              "description": "Identifier for the type of task being performed",
              "type": "string",
              "const": "videoInference"
            },
            "taskUUID": {
              "title": "Task UUID",
              "description": "UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.",
              "type": "string",
              "format": "uuid"
            },
            "webhookURL": {
              "title": "Webhook URL",
              "description": "Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.",
              "type": "string",
              "format": "uri"
            },
            "includeCost": {
              "title": "Include Cost",
              "description": "Include task cost in the response.",
              "type": "boolean"
            },
            "numberResults": {
              "title": "Number of Results",
              "description": "Number of results to generate. Each result uses a different seed, producing variations of the same parameters.",
              "type": "integer",
              "minimum": 1,
              "default": 1,
              "maximum": 4
            },
            "uploadEndpoint": {
              "title": "Upload Endpoint",
              "description": "Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.\n\n**Common use cases:**\n\n- **Cloud storage**: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.\n- **CDN integration**: Upload to content delivery networks for immediate distribution.\n\n```text\n// S3 presigned URL for secure upload\nhttps://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600\n\n// Google Cloud Storage presigned URL\nhttps://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789\n\n// Custom storage endpoint\nhttps://storage.example.com/uploads/generated-image.jpg\n```\n\nThe content data will be sent as the request body to the specified URL when generation is complete.\n\n[Read full documentation](https://runware.ai/docs/models/bfl-flux-video-edit-fast#uploadEndpoint)",
              "type": "string",
              "format": "uri"
            },
            "ttl": {
              "title": "TTL",
              "description": "Time-to-live (TTL) in seconds for generated content. Only applies when `outputType` is `URL`.",
              "type": "integer",
              "minimum": 60
            },
            "outputType": {
              "title": "Output Type",
              "description": "Video output type.",
              "type": "string",
              "enum": [
                "URL"
              ],
              "default": "URL"
            },
            "outputFormat": {
              "title": "Output Format",
              "description": "Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.\n\n- \\`JPG\\`: Best for photorealistic images with smaller file sizes (no transparency).\n- \\`PNG\\`: Lossless compression, supports high quality and transparency (alpha channel).\n- \\`WEBP\\`: Modern format providing superior compression and transparency support.\n- \\`MP4\\`: Widely supported video container (H.264), recommended for general use.\n- \\`WEBM\\`: Optimized for web delivery.\n- \\`MOV\\`: QuickTime format, common in professional workflows (Apple ecosystem).\n- \\`GIF\\`: Animated image format (no audio), suitable for short loops or previews.\n- \\`MP3\\`: Compressed audio, smaller file size.\n- \\`WAV\\`: Uncompressed, high-quality audio.\n- \\`FLAC\\`: Lossless compression.\n- \\`OGG\\`: Open-source compressed audio format (Vorbis codec).\n- \\`SVG\\`: Scalable Vector Graphics.\n- \\`TIFF\\`: High-quality output supporting layers.\n- \\`GLB\\`: Binary glTF format for 3D models, including geometry, textures, and PBR materials.\n\n> [!NOTE]\n> \\*\\*Transparency\\*\\*: If you are using features like background removal or LayerDiffuse that require transparency, you must select a format that supports an alpha channel (e.g., \\`PNG\\`, \\`WEBP\\`, \\`TIFF\\`). \\`JPG\\` does not support transparency.\n\n[Read full documentation](https://runware.ai/docs/models/bfl-flux-video-edit-fast#outputFormat)",
              "type": "string",
              "enum": [
                "MP4",
                "WEBM",
                "MOV"
              ],
              "default": "MP4"
            },
            "outputQuality": {
              "title": "Output Quality",
              "description": "Compression quality of the output. Higher values preserve quality but increase file size.",
              "type": "integer",
              "minimum": 20,
              "maximum": 99,
              "default": 95
            },
            "deliveryMethod": {
              "title": "Delivery Method",
              "description": "Determines how the API delivers task results.",
              "type": "string",
              "oneOf": [
                {
                  "const": "async",
                  "description": "Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse. Required for long-running tasks like video generation."
                }
              ],
              "default": "async"
            },
            "safety": {
              "type": "object",
              "title": "Safety Settings",
              "description": "Content safety checking configuration for video generation.",
              "properties": {
                "checkContent": {
                  "title": "Check Content",
                  "description": "Enable or disable content safety checking. Increases total generation time.",
                  "type": "boolean"
                },
                "mode": {
                  "title": "Safety Mode",
                  "description": "Safety checking mode for video generation.",
                  "type": "string",
                  "oneOf": [
                    {
                      "const": "fast",
                      "title": "Fast",
                      "description": "Checks key frames."
                    },
                    {
                      "const": "full",
                      "title": "Full",
                      "description": "Checks all frames."
                    }
                  ],
                  "default": "fast"
                }
              },
              "additionalProperties": false
            }
          },
          "required": [
            "positivePrompt",
            "inputs",
            "taskType",
            "taskUUID",
            "model"
          ],
          "additionalProperties": false
        },
        "description": "You must always POST an array of task objects."
      },
      "ResponseBody": {
        "type": "object",
        "properties": {
          "data": {
            "type": "array",
            "items": {
              "title": "Video Response",
              "type": "object",
              "additionalProperties": false,
              "properties": {
                "taskType": {
                  "title": "Task Type",
                  "description": "Identifier for the type of task this response belongs to.",
                  "type": "string",
                  "const": "videoInference"
                },
                "taskUUID": {
                  "title": "Task UUID",
                  "description": "UUID v4 identifier echoed from the original request, used to match async responses to their tasks.",
                  "type": "string",
                  "format": "uuid"
                },
                "cost": {
                  "title": "Cost",
                  "description": "Task cost in USD. Present when `includeCost` is set to `true` in the request.",
                  "type": "number"
                },
                "videoUUID": {
                  "title": "Video UUID",
                  "description": "UUID of the output video.",
                  "type": "string",
                  "format": "uuid"
                },
                "videoURL": {
                  "title": "Video URL",
                  "description": "URL of the output video.",
                  "type": "string",
                  "format": "uri"
                },
                "videoBase64Data": {
                  "title": "Video Base64 Data",
                  "description": "Base64-encoded video data.",
                  "type": "string"
                },
                "videoDataURI": {
                  "title": "Video Data URI",
                  "description": "Data URI of the output video.",
                  "type": "string",
                  "format": "uri"
                },
                "seed": {
                  "title": "Seed",
                  "description": "The seed used for generation. If none was provided, shows the randomly generated seed.",
                  "type": "integer"
                },
                "NSFWContent": {
                  "title": "NSFW Content",
                  "description": "Flag indicating if NSFW content was detected.",
                  "type": "boolean"
                }
              },
              "required": [
                "taskType",
                "taskUUID",
                "videoUUID"
              ]
            }
          }
        }
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        "title": "Error Response",
        "description": "Standard error response returned by the Runware API.",
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            "type": "array",
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                "code",
                "message"
              ],
              "additionalProperties": true,
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                  "type": "string",
                  "description": "A short identifier for the error (e.g., invalidApiKey, timeoutProvider)."
                },
                "message": {
                  "type": "string",
                  "description": "A human-readable explanation of what went wrong."
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                  "description": "The request parameter related to the error, if applicable."
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                  "description": "The task type of the request that failed."
                },
                "taskUUID": {
                  "type": "string",
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                "documentation": {
                  "type": "string",
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              }
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      "post": {
        "summary": "Run FLUX Video Edit [fast]",
        "description": "FLUX Video Edit [fast] is Black Forest Labs' instruction-based video editing model for changing an existing clip with a natural-language prompt. It can add, remove, or replace objects and characters; alter settings, styles, actions, and on-screen text; and revise or translate dialogue while preserving unedited motion, camera work, timing, framing, and audio. It supports source clips up to 15 seconds and produces 24 FPS output at up to 720p while retaining the original duration and aspect ratio.",
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          "402": {
            "description": "Payment Required — Insufficient account balance.",
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          "429": {
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            "description": "Server Error — Something went wrong on Runware's end.",
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          "503": {
            "description": "Service Unavailable — Temporarily unavailable (maintenance or capacity).",
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                  "$ref": "#/components/schemas/ErrorResponse"
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