Bytedance Seedance 2.0 Fast

video Bytedance price on request

Request

POST https://app.video-blade.com/api/v1/generations
X-API-Key: vb_…
Content-Type: application/json

{
  "callback_url": "https://your-app.example/callbacks/video-blade",
  "input": {},
  "model": "bytedance-seedance-2-fast"
}

Input parameters

Name	Type	Required	Description
`prompt`	string	optional	The text prompt used to generate the video. Required field. (Min length: 3, Max length: 20000 characters)
`first_frame_url`	string	optional	First frame image url or asset://{assetId} (for example: asset://asset-20260404242101-76djj)
`last_frame_url`	string	optional	End frame image url or asset://{assetId} (for example: asset://asset-20260404242101-76djj)
`reference_image_urls`	array	optional	Enter a list of image URLs or asset://{assetId} (for example: asset://asset-20260404242101-76djj). Single image requirements: Format: jpeg, png, webp, bmp, tiff, gif. Aspect ratio (width/height): (0.4, 2.5) Width and height (px): (300, 6000) Size: Single image less than 30 MB. Maximum number of files: The sum of the number of frames at the beginning and end must not exceed 9..
`reference_video_urls`	array	optional	Enter a list of video URLs or asset://{assetId} (for example: asset://asset-20260404242101-76djj). Single video requirements: Video format: mp4, mov. Resolution: 480p, 720p Duration: Single video duration [2, 15] s, maximum 3 reference videos, total duration of all videos not exceeding 15 seconds. Dimensions: Aspect ratio (width/height): [0.4, 2.5] Width/height (px): [300, 6000] Total pixels: [640×640=409600, 834×1112=927408], i.e., the product of width and height must meet the range requirement of [409600, 927408]. Size: Single video not exceeding 50 MB. Frame rate (FPS): [24, 60]
`reference_audio_urls`	array	optional	Enter a list of audio URLs or asset://{assetId} (for example: asset://asset-20260404242101-76djj). Single audio requirements: Format: wav, mp3 Duration: Single audio duration [2, 15] s, maximum 3 reference audios, total duration of all audios not exceeding 15 s. Size: Single audio file size not exceeding 15 MB.
`return_last_frame`	boolean	optional	Whether to return the last frame of the video as an image. Default: `False`
`generate_audio`	boolean	optional	Whether to generate audio for the video. - true: Generate with audio - false: Generate without audio Default: `True`
`resolution`	string	optional	Video resolution - 480p for faster generation, 720p for balance Values: `480p`, `720p` Default: `720p`
`aspect_ratio`	string	optional	Video aspect ratio configuration. Required field. Values: `1:1`, `4:3`, `3:4`, `16:9`, `9:16`, `21:9`, `adaptive` Default: `16:9`
`duration`	integer	optional	Video duration in 4-15 seconds or -1. Default: `5`
`web_search`	boolean	optional	Use online search. (Web search only can be used in the scene of t2v)
`nsfw_checker`	boolean	optional	Defaults to false. You can set it to false based on your needs. If set to false, our content filtering will be disabled, and all results will be returned directly by the model itself. Note: There is no guarantee that everything can be filtered out; if you are not satisfied with the results, you will need to make your own arrangements.

Pricing

Price on request; the charge is settled from actual consumption with the video coefficient ×2.0. See Pricing & tokens.