First frame image. Accepts a URL or base64-encoded data URI (data:image/png;base64,...).Image requirements:
- Formats: jpeg, png, webp, bmp, tiff, gif (1.5 Pro also supports heic, heif)
- Aspect ratio (width/height): 0.4 to 2.5
- Dimensions: 300px to 6000px per side
- Max size: 30 MB
Last frame image for first+last frame mode. Same format and requirements as image.Supported models: 1.5 Pro, 1.0 Pro, 1.0 Lite I2V.The first and last frame images can be the same. If aspect ratios differ, the last frame is auto-cropped to match the first.
Reference images for reference-image mode (1-4 images). Seedance 1.0 Lite I2V only.Use [图1], [图2] etc. in the prompt to reference specific images for better results.
Text description to guide the video generation. Supports Chinese and English.
Video length in seconds.
- 1.0 series: integer from
2 to 12
- 1.5 Pro: integer from
4 to 12
Video resolution. Options: 480p, 720p, 1080pNote: 1.0 Lite I2V reference image mode does not support 1080p.
Aspect ratio. Options: 16:9, 4:3, 1:1, 3:4, 9:16, 21:9, adaptiveDefault is adaptive for I2V (matches first frame). Reference image mode does not support adaptive.
Random seed for reproducibility. Range: -1 to 4294967295. -1 means random.
Whether to fix the camera position. Not supported in reference image mode.
Whether to add a watermark to the video.
Seedance 1.5 Pro only. Generate synchronized audio with the video.
Return the last frame of the generated video. Useful for chaining continuous videos.