Bytedance

GENERATION API CALLS

Video Generation

This page is auto-generated from model configurations. Last updated: 2026-08-18.

This reference lists all available Bytedance video generation models and their parameters. Use these parameter names when calling the Generation API.

OmniHuman 1.5
Seedance 1 Pro
Seedance 1 Pro Fast
Seedance 1.5 Pro
Seedance 2.0
Seedance 2.0 Fast
Seedance 2.0 Mini
Seedance 2.5

OmniHuman 1.5

New advanced and improved human generation model. Generates video using an image of a human figure paired with an audio file.

Model ID: model_bytedance-omni-human-1-5

Capabilities: img2video

LLM Markdown: https://app.scenario.com/api/models/model_bytedance-omni-human-1-5/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
`imageUrl`	file	Yes	-	-	-	-	Input image containing a human subject, face or character.
`audioUrl`	file	Yes	-	-	-	-	Input audio file. Audio must be under 30s long and under 5MB.

Seedance 1 Pro

Video model tuned for stable detail and fluid motion.

Model ID: model_bytedance-seedance-1-pro

Capabilities: txt2video, img2video

LLM Markdown: https://app.scenario.com/api/models/model_bytedance-seedance-1-pro/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
`prompt`	string	Yes	-	-	-	-	Describe your video
`image`	file	No	-	-	-	-	Image used as the first frame of the video.
`lastFrameImage`	file	No	-	-	-	-	Input image for last frame generation. This only works if an image start frame is given too.
`duration`	number	No	`5`	2	12	-	Duration in seconds
`resolution`	string	No	`1080p`	-	-	`480p`, `720p`, `1080p`	Output video resolution
`aspectRatio`	string	No	`16:9`	-	-	`9:21`, `9:16`, `3:4`, `1:1`, `4:3`, `16:9`, `21:9`, `adaptive`	Aspect ratio of the video. Ignored if first frame is provided.
`cameraFixed`	boolean	No	`false`	-	-	-	Whether to fix camera position

Seedance 1 Pro Fast

Balanced video model tuned for fast stable detail and fluid motion.

Model ID: model_bytedance-seedance-1-pro-fast

Capabilities: txt2video, img2video

LLM Markdown: https://app.scenario.com/api/models/model_bytedance-seedance-1-pro-fast/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
`prompt`	string	Yes	-	-	-	-	Describe your video
`image`	file	No	-	-	-	-	Image used as the first frame of the video.
`duration`	number	No	`5`	2	12	-	Duration in seconds
`resolution`	string	No	`1080p`	-	-	`480p`, `720p`, `1080p`	Output video resolution
`aspectRatio`	string	No	`16:9`	-	-	`9:21`, `9:16`, `3:4`, `1:1`, `4:3`, `16:9`, `21:9`, `adaptive`	Aspect ratio of the video. Ignored if first frame is provided.
`cameraFixed`	boolean	No	`false`	-	-	-	Whether to fix camera position

Seedance 1.5 Pro

Generate videos with audio with Seedance 1.5 (supports start & end frame)

Model ID: model_bytedance-seedance-1-5-pro

Capabilities: txt2video, img2video

LLM Markdown: https://app.scenario.com/api/models/model_bytedance-seedance-1-5-pro/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
`prompt`	string	Yes	-	-	-	-	Describe your video
`image`	file	No	-	-	-	-	Image used as the first frame of the video.
`lastFrameImage`	file	No	-	-	-	-	Input image for last frame generation. This only works if an image start frame is given too.
`duration`	number	No	`5`	4	12	-	Duration in seconds
`resolution`	string	No	`720p`	-	-	`480p`, `720p`, `1080p`	Output video resolution
`aspectRatio`	string	No	`16:9`	-	-	`21:9`, `9:16`, `3:4`, `1:1`, `4:3`, `16:9`, `adaptive`	Aspect ratio of the video.
`cameraFixed`	boolean	No	`false`	-	-	-	Whether to fix camera position
`generateAudio`	boolean	No	`true`	-	-	-	Whether to generate audio for the video

Seedance 2.0

BytePlus Seedance 2.0 video generation: text, first/last frame, or multimodal references (images, videos, optional audio).

Model ID: model_bytedance-seedance-2-0

Capabilities: txt2video, img2video, video2video

LLM Markdown: https://app.scenario.com/api/models/model_bytedance-seedance-2-0/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
`prompt`	string	No	-	-	-	-	Text prompt for video generation. Use ”@” such as “@image1” or “@video1” to quickly reference selected images/videos. Prompt is optional if you provide a first frame or reference images/videos.
`image`	file	No	-	-	-	-	First frame image (frame mode). Mutually exclusive with reference images/videos.
`lastFrameImage`	file	No	-	-	-	-	Last frame image. Only valid when a first frame image is provided.
`referenceImages`	file_array	No	-	-	-	-	Reference images for multimodal mode (up to 9). Mutually exclusive with first frame.
`referenceVideos`	file_array	No	-	-	-	-	Reference videos for multimodal mode (up to 3). Mutually exclusive with first frame.
`referenceAudio`	file_array	No	-	-	-	-	Reference audio tracks (up to 3). Requires at least one reference image or video.
`duration`	number	No	`-1`	-	-	`-1`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15`	Duration in seconds (4–15), or Auto: with reference videos, bill at the longest reference clip length (clamped 4–15s).
`resolution`	string	No	`720p`	-	-	`480p`, `720p`, `1080p`, `4k`	Output video resolution
`aspectRatio`	string	No	`adaptive`	-	-	`16:9`, `4:3`, `1:1`, `3:4`, `9:16`, `21:9`, `adaptive`	Output aspect ratio
`generateAudio`	boolean	No	`true`	-	-	-	Whether to generate audio for the video

Seedance 2.0 Fast

Faster BytePlus Seedance 2.0 video generation: text, first/last frame, or multimodal references (images, videos, optional audio).

Model ID: model_bytedance-seedance-2-0-fast

Capabilities: txt2video, img2video, video2video

LLM Markdown: https://app.scenario.com/api/models/model_bytedance-seedance-2-0-fast/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
`prompt`	string	No	-	-	-	-	Text prompt for video generation. Use ”@” such as “@image1” or “@video1” to quickly reference selected images/videos. Prompt is optional if you provide a first frame or reference images/videos.
`image`	file	No	-	-	-	-	First frame image (frame mode). Mutually exclusive with reference images/videos.
`lastFrameImage`	file	No	-	-	-	-	Last frame image. Only valid when a first frame image is provided.
`referenceImages`	file_array	No	-	-	-	-	Reference images for multimodal mode (up to 9). Mutually exclusive with first frame.
`referenceVideos`	file_array	No	-	-	-	-	Reference videos for multimodal mode (up to 3). Mutually exclusive with first frame.
`referenceAudio`	file_array	No	-	-	-	-	Reference audio tracks (up to 3). Requires at least one reference image or video.
`duration`	number	No	`-1`	-	-	`-1`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15`	Duration in seconds (4–15), or Auto: with reference videos, bill at the longest reference clip length (clamped 4–15s).
`resolution`	string	No	`720p`	-	-	`480p`, `720p`	Output video resolution
`aspectRatio`	string	No	`adaptive`	-	-	`21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16`, `adaptive`	Output aspect ratio
`generateAudio`	boolean	No	`true`	-	-	-	Whether to generate audio for the video

Seedance 2.0 Mini

Budget BytePlus Seedance 2.0 video generation (up to 720p): text, first/last frame, or multimodal references.

Model ID: model_bytedance-seedance-2-0-mini

Capabilities: txt2video, img2video, video2video

LLM Markdown: https://app.scenario.com/api/models/model_bytedance-seedance-2-0-mini/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
`prompt`	string	No	-	-	-	-	Describe the video you want. You can point to your uploaded files with ”@” - for example, “@image1” or “@video1” - to reference them directly in your description. Optional if you provide a first frame or reference images/videos.
`image`	file	No	-	-	-	-	An image to use as the video’s opening frame. Can’t be combined with reference images or videos.
`referenceImages`	file_array	No	-	-	-	-	Images to guide the video’s subjects and style (up to 9). Can’t be combined with a first frame.
`referenceVideos`	file_array	No	-	-	-	-	Videos to guide the motion and style (up to 3). Can’t be combined with a first frame.
`referenceAudio`	file_array	No	-	-	-	-	Audio tracks to guide the video (up to 3). Requires at least one reference image or video.
`duration`	number	No	`-1`	-	-	`-1`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15`	How long the video lasts, in seconds (4–15). Auto matches the length of your longest reference video (kept within 4–15s).
`resolution`	string	No	`720p`	-	-	`480p`, `720p`	The output quality. Higher resolution is sharper but costs more (this model supports up to 720p).
`aspectRatio`	string	No	`adaptive`	-	-	`21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16`, `adaptive`	The shape of the video. Auto picks a fitting shape based on your inputs.
`generateAudio`	boolean	No	`true`	-	-	-	Adds a generated soundtrack to the video. On by default.

Seedance 2.5

BytePlus Seedance 2.5 (up to 1080p, 4-30s): text-to-video, first/last frame, reference-to-video, editing, or extension — mode is inferred from your inputs and prompt.

Model ID: model_bytedance-seedance-2-5

Capabilities: txt2video, img2video, video2video

LLM Markdown: https://app.scenario.com/api/models/model_bytedance-seedance-2-5/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
`prompt`	string	No	-	-	-	-	Describe the video you want. Use ”@” such as “@image1” or “@video1” to reference uploads. Mode is inferred from your inputs and prompt: text-to-video, first/last frame, reference-to-video, editing, or extension. Optional if you provide a first frame or reference images/videos/audio.
`image`	file	No	-	-	-	-	First frame for image-to-video. Mutually exclusive with reference images/videos. In first/last-frame mode, aspect ratio is ignored (always adaptive to this frame).
`lastFrameImage`	file	No	-	-	-	-	Optional last frame. Only valid when a first frame is provided.
`referenceImages`	file_array	No	-	-	-	-	Reference images for multimodal / reference-to-video mode (up to 30). Mutually exclusive with first frame.
`referenceVideos`	file_array	No	-	-	-	-	Reference videos for multimodal, editing, or extension mode (up to 10). Mutually exclusive with first frame. Editing and extension are inferred from your prompt.
`referenceAudio`	file_array	No	-	-	-	-	Reference audio tracks (up to 10). Can be used alone, or with reference images/videos.
`duration`	number	No	`-1`	-	-	`-1`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15`, `16`, `17`, `18`, `19`, `20`, `21`, `22`, `23`, `24`, `25`, `26`, `27`, `28`, `29`, `30`	How long the video lasts, in seconds (4-30), or Auto. With reference videos, Auto matches the longest reference clip (kept within 4-30s). Ignored in editing mode (must be Auto / -1; output follows the input video).
`resolution`	string	No	`720p`	-	-	`480p`, `720p`, `1080p`	The output quality. Higher resolution is sharper but costs more.
`aspectRatio`	string	No	`adaptive`	-	-	`21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16`, `adaptive`	The shape of the video. Auto picks a fitting shape based on your inputs. Ignored in first/last-frame mode, editing mode, and extension mode (always adaptive to the input).
`generateAudio`	boolean	No	`true`	-	-	-	Adds a generated soundtrack to the video.
`outputFormat`	string	No	`mp4`	-	-	`mp4`, `mov`	Video container format. MP4 is the general-purpose delivery format; MOV keeps higher colour fidelity for grading and compositing (larger files, narrower player support).