> ## Documentation Index > Fetch the complete documentation index at: https://docs.powertokens.ai/llms.txt > Use this file to discover all available pages before exploring further. # Seedance 1.0 Pro First & Last Frame to Video > For the `seedance-1-0-pro-250528` model. After submitting, query status via `GET /v1/videos/{task_id}`. ## OpenAPI ````yaml api-reference/en/zmodelVideo/byteplus/seedance-1-0-pro-first-last-frame-to-video.json POST /v1/videos openapi: 3.0.1 info: title: Seedance 1.0 Pro First and Last Frame to Video version: 1.0.0 servers: - url: https://api.powertokens.ai security: [] paths: /v1/videos: post: summary: Seedance 1.0 Pro First and Last Frame to Video description: >- For the `seedance-1-0-pro-250528` model. After submitting, query status via `GET /v1/videos/{task_id}`. operationId: seedance10ProFirstLastFrameToVideo requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/FirstLastFrameToVideoRequest' examples: first_last_frame: summary: Basic first and last frame to video value: model: seedance-1-0-pro-250528 media: - type: text text: Camera zoom in - type: first_frame url: https://example.com/start.jpg - type: last_frame url: https://example.com/end.jpg responses: '200': description: Submission successful, returns video task object. content: application/json: schema: $ref: '#/components/schemas/VideoTaskResponse' '400': description: Invalid request parameters. '401': description: Authentication failed. '429': description: Request rate limit exceeded. '500': description: Internal server error. security: - BearerAuth: [] components: schemas: FirstLastFrameToVideoRequest: type: object required: - model - media properties: model: type: string enum: - seedance-1-0-pro-250528 description: The ID of the model you need to call (Model ID) media: type: array description: >- Multimodal input array. First & Last Frame video requires `first_frame`, `last_frame`, and `text`. items: $ref: '#/components/schemas/VideoMediaInput' seconds: type: string description: >- Video duration, integer only, in seconds. * Seedance 1.0 pro, Seedance 1.0 pro fast: [2, 12] s. * Seedance 1.5 pro: [4, 12] or set to -1 * Seedance 2.0 series: [4, 15] or set to -1 **Note** Seedance 2.0 series and Seedance 1.5 pro support two configuration methods: * Specify exact duration: Any integer within the valid range. * Smart mode: Set to -1 to let the model choose the appropriate video length (in whole seconds) within the valid range. The actual generated video duration can be obtained from the duration field returned by the query video generation task API. Note that video duration is related to billing, so set it carefully. default: '5' example: '5' enum: - '2' - '3' - '4' - '5' - '6' - '7' - '8' - '9' - '10' - '11' - '12' size: type: string enum: - 480p - 720p - 1080p description: >- > Seedance 2.0 series and Seedance 1.5 pro default: `720p` > Seedance 1.0 pro & pro-fast default: `1080p` Video resolution. Enum values: * 480p * 720p * 1080p: Not supported by Seedance 2.0 Fast and Seedance 2.0 Mini. * 4k: Only supported by Seedance 2.0 ```Note - Compared to typical 8-bit color depth, Seedance 2.0 4k output uses 10-bit encoding, fully preserving rich color gradations and smooth transitions, meeting professional film production and HDR video content requirements. - 4k videos are output in H.265 (HEVC) format; some players/browsers may not support direct playback. default: 1080p ratio: type: string enum: - '16:9' - '4:3' - '1:1' - '3:4' - '9:16' - '21:9' - adaptive description: >- > Seedance 2.0 series and Seedance 1.5 pro default: `adaptive` > Other models: Text-to-Video default `16:9`, Image-to-Video default `adaptive` The aspect ratio of the generated video. See the table below for pixel dimensions for different aspect ratios. * 16:9 * 4:3 * 1:1 * 3:4 * 9:16 * 21:9 * adaptive: Automatically selects the most suitable aspect ratio based on input (see details below) **adaptive Rules** When ratio is set to adaptive, the model automatically adjusts the aspect ratio based on the generation scenario. The actual video aspect ratio can be obtained from the ratio field returned by the query video generation task API. ****Supported models: * Seedance 2.0 series, Seedance 1.5 Pro supported * Other models only supported in Image-to-Video scenarios ****Rules: * Text-to-Video：Based on the input prompt, intelligently selects the most suitable aspect ratio. * First Frame / First & Last Frame: Automatically selects the closest aspect ratio based on the uploaded first frame image ratio. * Multimodal Reference-to-Video: Determines based on user prompt intent. If it is first-frame video/editing video/extending video, selects the closest aspect ratio based on that image/video; otherwise, selects the closest aspect ratio based on the first media file (priority: video > image). Pixel dimensions corresponding to different aspect ratios Note: For Image-to-Video, if the selected aspect ratio does not match the uploaded image ratio, the platform will crop your image from the center. | Resolution | Aspect Ratio | Pixel Dimensions Seedance 2.0 Series | Pixel Dimensions Seedance 1.5 pro | Pixel Dimensions Seedance 1.0 Series | |---|---|---|---|---| | 480p | 16:9 | 864×496 | 864×496 | 864×480 | | | 4:3 | 752×560 | 752×560 | 736×544 | | | 1:1 | 640×640 | 640×640 | 640×640 | | | 3:4 | 560×752 | 560×752 | 544×736 | | | 9:16 | 496×864 | 496×864 | 480×864 | | | 21:9 | 992×432 | 992×432 | 960×416 | | 720p | 16:9 | 1280×720 | 1280×720 | 1248×704 | | | 4:3 | 1112×834 | 1112×834 | 1120×832 | | | 1:1 | 960×960 | 960×960 | 960×960 | | | 3:4 | 834×1112 | 834×1112 | 832×1120 | | | 9:16 | 720×1280 | 720×1280 | 704×1248 | | | 21:9 | 1470×630 | 1470×630 | 1504×640 | | 1080p (Not supported by Seedance 2.0 Fast, Seedance 2.0 Mini)| 16:9 | 1920×1080 | 1920×1080 | 1920×1088 | | | 4:3 | 1664×1248 | 1664×1248 | 1664×1248 | | | 1:1 | 1440×1440 | 1440×1440 | 1440×1440 | | | 3:4 | 1248×1664 | 1248×1664 | 1248×1664 | | | 9:16 | 1080×1920 | 1080×1920 | 1088×1920 | | | 21:9 | 2206×946 | 2206×946 | 2176×928 | | 4K (Only supported by Seedance 2.0) | 16:9 | 3840×2160 | - | - | | | 4:3 | 3326×2494 | - | - | | | 1:1 | 2880×2880 | - | - | | | 3:4 | 2494×3326 | - | - | | | 9:16 | 2160×3840 | - | - | | | 21:9 | 4398×1886 | - | - | default: adaptive seed: type: integer description: >- > Temporarily not supported by Seedance 2.0 series Seed integer for controlling the randomness of generated content. Range: integer in [-1, 2^32-1]. Notes: * With the same request, if the model receives different seed values (e.g., not specifying a seed, setting seed to -1 which uses a random number, or manually changing the seed value), different results will be generated. * With the same request, if the model receives the same seed value, similar results will be generated, but exact consistency is not guaranteed. default: -1 minimum: -1 maximum: 4294967295 camera_fixed: type: boolean description: >- > Not supported in reference image scenarios, temporarily not supported by Seedance 2.0 series Whether to fix the camera. * true: Fix the camera. The platform will append fixed camera instructions to the user prompt, but the actual effect is not guaranteed. * false: Do not fix the camera. default: false watermark: type: boolean description: >- Whether the generated video contains a watermark. * false: The generated video does not contain a watermark. * true: The generated video displays an "AI Generated" watermark in the bottom-right corner. default: false return_last_frame: type: boolean description: >- true: Return the last frame image of the generated video. When set to true, you can obtain the last frame image through the query video generation task API. The last frame image is in PNG format with the same pixel dimensions as the generated video, without watermarks. Use this parameter to generate multiple consecutive videos: use the last frame of one video as the first frame of the next video task to quickly generate a sequence of consecutive videos. false: Do not return the last frame image of the generated video. default: false VideoTaskResponse: type: object properties: id: type: string description: >- Video generation task ID. Only stored for 7 days (from the `created_at` timestamp), then automatically deleted. * When draft: true, this is the Draft video task ID. * When draft: false, this is the normal video task ID. Video generation is asynchronous. After obtaining the ID, use the query video generation task API to check the status. When successful, the API returns the generated video URL. VideoMediaInput: type: object required: - type properties: type: type: string enum: - text - first_frame - last_frame description: >- Media type. `text` requires the `text` field; other types require the `url` field. url: type: string description: Media URL. Not required when `type=text`; required for other types. text: type: string description: >- Text content. Required when `type=text`; not required for other types. securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: JWT description: 'Pass `Authorization: Bearer ` in the request header.' ````