--- title: Bytedance | Scenario Docs --- > This page is auto-generated from model configurations. Last updated: 2026-04-16. This reference lists all available **Bytedance** video generation models and their parameters. Use these parameter names when calling the [Generation API](/api/postgeneratecustom/index.md). - [OmniHuman 1.5](#omnihuman-15) - [Seedance 1 Lite](#seedance-1-lite) - [Seedance 1 Pro](#seedance-1-pro) - [Seedance 1 Pro Fast](#seedance-1-pro-fast) - [Seedance 1.5 Pro](#seedance-15-pro) - [Seedance 2.0](#seedance-20) - [Seedance 2.0 Fast](#seedance-20-fast) --- ## 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:** | 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 Lite Lightweight, speed-first video generator for fast iteration. **Model ID:** `model_bytedance-seedance-1-lite` **Capabilities:** `txt2video`, `img2video` **LLM 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 | - | - | - | - | Image used as the last frame of the video. | | `referenceImages` | file\_array | No | - | - | - | - | Reference images to guide video generation for characters, avatars, clothing, environments, or multi-character interactions. | | `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 | | `seed` | number | No | - | - | - | - | Use a seed for reproducible results. Leave blank to use a random seed. | ## Seedance 1 Pro Video model tuned for stable detail and fluid motion. **Model ID:** `model_bytedance-seedance-1-pro` **Capabilities:** `txt2video`, `img2video` **LLM 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 | | `seed` | number | No | - | - | - | - | Use a seed for reproducible results. Leave blank to use a random seed. | ## 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:** | 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 | | `seed` | number | No | - | - | - | - | Use a seed for reproducible results. Leave blank to use a random seed. | ## 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:** | 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 | | `seed` | number | No | - | - | - | - | Use a seed for reproducible results. Leave blank to use a random seed. | ## 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:** | 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 | `5` | 4 | 15 | - | Duration in seconds (4–15). | | `resolution` | string | No | `720p` | - | - | `480p`, `720p` | 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 | | `seed` | number | No | - | 0 | 4294967295 | - | Optional seed for reproducible results (0–4294967295). | ## 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:** | 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 | `5` | 4 | 15 | - | Duration in seconds (4–15). | | `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 | | `seed` | number | No | - | 0 | 4294967295 | - | Optional seed for reproducible results (0–4294967295). |