Seedance 1.5 Pro

Seedance 1.5 Pro is ByteDance’s video generation model. Use model ID doubao-seedance-1-5-pro-251215 for text-to-video and image-to-video workflows.

In model names, t2v means text-to-video. i2v means image-to-video, including first-frame or first-and-last-frame generation. kf2v means keyframe-to-video; in Seedance official terminology, this corresponds to first-and-last-frame image-to-video.

Key capabilities

Text to video — Generate videos from text prompts
Image to video — Use first-frame or first-and-last-frame reference images
Audio generation — Available for the text-to-video workflow with generate_audio
Output control — Configure duration, aspect ratio, resolution, watermark, seed, and camera lock

Text to video
Image to video

Quick example

cURL

curl https://www.anyfast.ai/v1/video/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedance-1-5-pro-251215",
    "content": [{"type": "text", "text": "A cat walking through sunflowers at golden hour"}],
    "ratio": "16:9",
    "duration": 5,
    "resolution": "720p",
    "generate_audio": false
  }'

Parameter	Type	Required	Description
`model`	string	Yes	Must be `doubao-seedance-1-5-pro-251215`
`content`	array	Yes	A text item only
`ratio`	string	No	`16:9`, `4:3`, `1:1`, `3:4`, `9:16`, or `21:9`; default `16:9`
`resolution`	string	No	`480p`, `720p`, or `1080p`; default `720p`
`duration`	integer	No	4–12 seconds; default `5`
`generate_audio`	boolean	No	Generate audio with the video; default `false`
`watermark`	boolean	No	Default `false`
`seed`	integer	No	Random seed for reproducibility
`camera_fixed`	boolean	No	Fix the camera position; default `false`

Quick example

cURL

curl https://www.anyfast.ai/v1/video/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedance-1-5-pro-251215",
    "content": [
      {"type": "text", "text": "The girl opens her eyes and looks at the camera gently"},
      {"type": "image_url", "image_url": {"url": "https://example.com/photo.jpg"}, "role": "first_frame"}
    ],
    "ratio": "adaptive",
    "duration": 5,
    "resolution": "720p"
  }'

Parameter	Type	Required	Description
`model`	string	Yes	Must be `doubao-seedance-1-5-pro-251215`
`content`	array	Yes	A text item and one or more `image_url` items
`content[].role`	string	No	`first_frame` or `last_frame` for a reference image
`ratio`	string	No	Also supports `adaptive`; default `16:9`
`resolution`	string	No	`480p`, `720p`, or `1080p`; default `720p`
`duration`	integer	No	4–12 seconds; default `5`
`watermark`	boolean	No	Default `false`
`seed`	integer	No	Random seed for reproducibility
`camera_fixed`	boolean	No	Fix the camera position; default `false`

API Reference

View both Seedance 1.5 Pro workflows.

Getting started

Model Introduction

Resources

Seedance 1.5 Pro

Key capabilities

Quick example

Quick example

API Reference

​Key capabilities

​Quick example

​Quick example

API Reference

Key capabilities

Quick example

Quick example