> ## Documentation Index > Fetch the complete documentation index at: https://evolink.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Seedance 2.5 Video Edit > - Video editing on an input video — replace subjects, add/remove objects, restyle or repaint regions - Prompt must state the editing intent (e.g. "Edit the video: remove the background music of @video1") - Input the video to edit (required) + optional reference images (0–30) + reference videos (up to 10 in total) + reference audio (0–10) - **Now supports AIGC realistic human materials** - Asynchronous processing mode, use the returned task ID to [query status](/en/api-manual/task-management/get-task-detail) - Generated video links are valid for 24 hours, please save them promptly ## OpenAPI ````yaml en/api-manual/video-series/seedance2.5/seedance-2.5-video-edit.json POST /v1/videos/generations openapi: 3.1.0 info: title: Seedance 2.5 Video Edit API description: >- Seedance 2.5 video editing API, edits an input video — replace subjects, add/remove objects, restyle or repaint regions license: name: MIT version: 1.0.0 servers: - url: https://api.evolink.ai description: Production security: - bearerAuth: [] tags: - name: Video Generation description: AI video generation endpoints paths: /v1/videos/generations: post: tags: - Video Generation summary: Seedance 2.5 Video Edit description: >- - Video editing on an input video — replace subjects, add/remove objects, restyle or repaint regions - Prompt must state the editing intent (e.g. "Edit the video: remove the background music of @video1") - Input the video to edit (required) + optional reference images (0–30) + reference videos (up to 10 in total) + reference audio (0–10) - **Now supports AIGC realistic human materials** - Asynchronous processing mode, use the returned task ID to [query status](/en/api-manual/task-management/get-task-detail) - Generated video links are valid for 24 hours, please save them promptly operationId: createSeedance25VideoEdit requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/VideoGenerationRequest' examples: remove_objects: summary: Edit video (remove objects) value: model: seedance-2.5-video-edit prompt: >- Edit the video: remove all passers-by in @video1, keep only the main character video_urls: - https://example.com/original.mp4 quality: 720p generate_audio: true content_filter: true replace_subject: summary: Edit video (replace element with image reference) value: model: seedance-2.5-video-edit prompt: >- Edit the video: replace the perfume in the gift box in @video1 with the face cream in @image1, keep the camera movement unchanged image_urls: - https://example.com/cream.jpg video_urls: - https://example.com/original.mp4 duration: -1 responses: '200': description: Video generation task created successfully content: application/json: schema: $ref: '#/components/schemas/VideoGenerationResponse' '400': description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: invalid_parameter message: Invalid request parameters type: invalid_request_error '401': description: Unauthenticated, token invalid or expired content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: unauthorized message: Invalid or expired token type: authentication_error '402': description: Insufficient quota, top-up required content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: insufficient_quota message: Insufficient quota. Please top up your account. type: insufficient_quota '403': description: Access denied content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: model_access_denied message: 'Token does not have access to model: seedance-2.5-video-edit' type: invalid_request_error '429': description: Rate limit exceeded content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: rate_limit_exceeded message: Too many requests, please try again later type: rate_limit_error '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: internal_error message: Internal server error type: api_error components: schemas: VideoGenerationRequest: type: object required: - model - prompt - video_urls properties: model: type: string description: Video generation model name enum: - seedance-2.5-video-edit default: seedance-2.5-video-edit example: seedance-2.5-video-edit prompt: type: string description: >- Text prompt describing the desired edit. Supports both Chinese and English, recommended no more than 500 characters for Chinese. Maximum prompt length: 10000 tokens **Details:** - The prompt must state the editing intent, e.g., "Edit the video: remove the background music of @video1" - You can use natural language to specify the purpose of each material, e.g., "replace the character in @video1 with the person in @image1" - The model will automatically understand the correspondence between material numbers and their intended uses example: >- Edit the video: remove all passers-by in @video1, keep only the main character video_urls: type: array description: >- Input video URL array, **required; 1–10 videos** **Requirement:** At least 1 video required — the video to edit. The first video is the video being edited; additional videos serve as references. **Role description:** | Media Type | Role | Typical Usage | |---------|------|----------| | Video | `reference_video` | The video to edit (first video), camera movement or motion reference (additional videos) | **Video requirements:** - Supported formats: `.mp4`, `.mov` - Resolution: 480p, 720p, 1080p, 4K - Duration per video: `4` ~ `30` seconds (the first video is the edit target), max 10 videos, total duration of all videos ≤ `30` seconds - Aspect ratio (width/height): `0.4` ~ `2.5` - Width/height pixels: `300` ~ `6000` px - Frame pixels (width × height): `409,600` ~ `8,295,044` (e.g., 640×640 ~ 3326×2494) - Max size per video: `200MB` - Frame rate: `24` ~ `60` FPS - Total request body size must not exceed `64MB`, do not use Base64 encoding - Specific codec, resolution, and other media validity checks are performed by the upstream model - Using video references will increase costs (input video duration is counted in billing) - Video URLs must be directly accessible by the server items: type: string format: uri minItems: 1 maxItems: 10 example: - https://example.com/original.mp4 image_urls: type: array description: >- Reference image URL array, **optional; 1–30 images when provided** **Requirement:** `video_urls` is required for this model; images are optional supplementary references. **Role description:** | Media Type | Role | Typical Usage | |---------|------|----------| | Image | `reference_image` | Style reference, product image, replacement subject (specified via prompt) | **Image requirements:** - Supported formats: `.jpeg`, `.png`, `.webp` - Aspect ratio (width/height): `0.4` ~ `2.5` - Width/height pixels: `300` ~ `6000` px - Max size per image: `30MB` - Total request body size must not exceed `64MB`, do not use Base64 encoding - Image URLs must be directly accessible by the server items: type: string format: uri minItems: 1 maxItems: 30 example: - https://example.com/ref1.jpg - https://example.com/ref2.jpg audio_urls: type: array description: >- Reference audio URL array, **optional; 1–10 clips when provided** **Requirement:** `video_urls` is required for this model; audio clips are optional supplementary references. **Role description:** | Media Type | Role | Typical Usage | |---------|------|----------| | Audio | `reference_audio` | Background music, sound effects, voice/dialogue reference | **Audio requirements:** - Supported formats: `.wav`, `.mp3` - Duration per clip: `2` ~ `30` seconds, max 10 clips, total duration of all audio ≤ `30` seconds - Max size per clip: `15MB` - Total request body size must not exceed `64MB`, do not use Base64 encoding - Audio URLs must be directly accessible by the server items: type: string format: uri minItems: 1 maxItems: 10 example: - https://example.com/bgm.mp3 duration: type: integer description: >- Output video duration (seconds), defaults to `-1` **Details:** - Only `-1` is supported: the output length follows the input video (may be up to 0.4s shorter) - Custom durations are rejected - Duration directly affects billing enum: - -1 default: -1 example: -1 quality: type: string description: |- Video resolution, defaults to `720p` **Options:** - `480p`: Lower clarity, lower cost - `720p`: Standard clarity, this is the default enum: - 480p - 720p default: 720p example: 720p aspect_ratio: type: string description: >- Video aspect ratio, defaults to `adaptive` **Options:** - `adaptive`: the output ratio follows the first input video, the only value this model accepts - Fixed ratios such as `16:9` or `9:16` are rejected enum: - adaptive default: adaptive example: adaptive generate_audio: type: boolean description: |- Whether to generate synchronized audio, defaults to `true` **Options:** - `true`: Video includes synchronized audio at no additional charge - `false`: Output silent video default: true example: true content_filter: type: boolean description: >- Content filter, enabled by default `true` **Options:** - `true`: Standard content safety check, this is the default - `false`: Relaxes content restrictions, billed at +10% (`1.1x`). Illegal and prohibited content is always enforced regardless of this setting default: true example: true output_format: type: string description: >- Output container format, defaults to `mp4` **Options:** - `mp4`: H.264 encoding with the best compatibility and standard color precision, this is the default - `mov`: H.264 + yuv444p chroma sampling + PCM audio for higher color fidelity, recommended for color grading, keying and compositing workflows. Browser inline playback may not support it; download and play with VLC / mpv / ffplay. No extra charge enum: - mp4 - mov default: mp4 example: mp4 callback_url: type: string description: >- HTTPS callback URL for task completion **Callback timing:** - Triggered when the task is completed, failed, or cancelled - Sent after billing confirmation is complete **Security restrictions:** - Only HTTPS protocol is supported - Callbacks to private IP addresses are prohibited (127.0.0.1, 10.x.x.x, 172.16-31.x.x, 192.168.x.x, etc.) - URL length must not exceed `2048` characters **Callback mechanism:** - Timeout: `10` seconds - Up to `3` retries after failure (at `1`/`2`/`4` seconds after failure respectively) - Callback response body format is consistent with the task query endpoint response format - A 2xx status code is considered successful; other status codes trigger retries format: uri example: https://your-domain.com/webhooks/video-task-completed VideoGenerationResponse: type: object properties: created: type: integer description: Task creation timestamp example: 1761313744 id: type: string description: Task ID example: task-unified-1774857405-abc123 model: type: string description: Actual model name used example: seedance-2.5-video-edit object: type: string enum: - video.generation.task description: Specific type of the task progress: type: integer description: Task progress percentage (0-100) minimum: 0 maximum: 100 example: 0 status: type: string description: Task status enum: - pending - processing - completed - failed example: pending task_info: $ref: '#/components/schemas/VideoTaskInfo' description: Video task details type: type: string enum: - text - image - audio - video description: Output type of the task example: video usage: $ref: '#/components/schemas/VideoUsage' description: Usage and billing information ErrorResponse: type: object properties: error: type: object properties: code: type: string description: Error code identifier message: type: string description: Error description message type: type: string description: Error type VideoTaskInfo: type: object properties: can_cancel: type: boolean description: Whether the task can be cancelled example: true estimated_time: type: integer description: Estimated completion time (seconds) minimum: 0 example: 165 video_duration: type: integer description: Video duration (seconds) example: 8 VideoUsage: type: object description: Usage and billing information properties: billing_rule: type: string description: Billing rule enum: - per_call - per_token - per_second example: per_second credits_reserved: type: number description: Estimated credits consumed minimum: 0 example: 50 user_group: type: string description: User group category example: default securitySchemes: bearerAuth: type: http scheme: bearer description: >- ##All endpoints require Bearer Token authentication## **Get API Key:** Visit the [API Key Management Page](https://evolink.ai/dashboard/keys) to obtain your API Key **Add to request header:** ``` Authorization: Bearer YOUR_API_KEY ``` ````