--- title: Seedance 2.0 description: ByteDance's next-generation video model with a unified multimodal architecture. Generates high-quality video with synchronized audio from text, images, video clips, and audio inputs. Supports multimodal references (up to 9 images, 3 videos, 3 audio files), native audio generation, video editing, video extension, intelligent duration, and adaptive aspect ratio. image: https://developers.cloudflare.com/dev-products-preview.png --- > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/ai/llms.txt > Use this file to discover all available pages before exploring further. [Skip to content](#%5Ftop) ![ByteDance logo](https://developers.cloudflare.com/_astro/bytedance.T1uiROQ6.svg) # Seedance 2.0 Text-to-Video • ByteDance • Proxied `bytedance/seedance-2.0` ByteDance's next-generation video model with a unified multimodal architecture. Generates high-quality video with synchronized audio from text, images, video clips, and audio inputs. Supports multimodal references (up to 9 images, 3 videos, 3 audio files), native audio generation, video editing, video extension, intelligent duration, and adaptive aspect ratio. | Model Info | | | ---------------- | ------------------------------------------------------------------------------------------------------------------------ | | More information | [link ↗](https://seed.bytedance.com/en/seedance2%5F0) | | Pricing | [View pricing in the Cloudflare dashboard ↗](https://dash.cloudflare.com/?to=/:account/ai/models/bytedance/seedance-2.0) | ## Usage * [ TypeScript ](#tab-panel-328) * [ cURL ](#tab-panel-329) TypeScript ``` const response = await env.AI.run( 'bytedance/seedance-2.0', { prompt: 'A golden retriever running through a field of sunflowers on a sunny day', aspect_ratio: '16:9', duration: 5, resolution: '720p', }, ) console.log(response) ``` Terminal window ``` curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \ --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \ --header "Content-Type: application/json" \ --data '{ "model": "bytedance/seedance-2.0", "input": { "prompt": "A golden retriever running through a field of sunflowers on a sunny day", "aspect_ratio": "16:9", "duration": 5, "resolution": "720p" } }' ``` * [ Output ](#tab-panel-324) * [ Raw response ](#tab-panel-325) ``` { "state": "Completed", "result": { "video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0/simple-video.mp4" }, "gatewayMetadata": { "keySource": "Unified" } } ``` ## Examples **High Resolution Cinematic** — Cinematic video in 1080p * [ TypeScript ](#tab-panel-332) * [ cURL ](#tab-panel-333) TypeScript ``` const response = await env.AI.run( 'bytedance/seedance-2.0', { prompt: 'A dramatic drone shot flying through misty mountain peaks at sunrise, cinematic lighting with volumetric fog', aspect_ratio: '16:9', duration: 10, resolution: '1080p', }, ) console.log(response) ``` Terminal window ``` curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \ --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \ --header "Content-Type: application/json" \ --data '{ "model": "bytedance/seedance-2.0", "input": { "prompt": "A dramatic drone shot flying through misty mountain peaks at sunrise, cinematic lighting with volumetric fog", "aspect_ratio": "16:9", "duration": 10, "resolution": "1080p" } }' ``` * [ Output ](#tab-panel-326) * [ Raw response ](#tab-panel-327) ``` { "state": "Completed", "result": { "video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0/high-resolution-cinematic.mp4" }, "gatewayMetadata": { "keySource": "Unified" } } ``` **Image to Video** — Generate video from a reference image * [ TypeScript ](#tab-panel-336) * [ cURL ](#tab-panel-337) TypeScript ``` const response = await env.AI.run( 'bytedance/seedance-2.0', { image: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAnklEQVR42u2XQRLAIAgD8/839i/26qFCACm0ozPe1KwcQsAoXvgcAABxpwFowl4QWITHxW0LCBhxVngF4gKIirMQyBRnIJAtrkE8AuwWnyFEgKzfS1UA+3sWTju3BGAu7gKYIfBW+Q/AAQgBeMCkt1wVsLZjcwUYG2Z9wGLHZitWk1DEisubUYt2XB5IWkSyFqG0RSxvMZi0Gc1+Ox3fm00ZJ5mGVtkAAAAASUVORK5CYII=', prompt: 'The character begins walking forward through the scene', aspect_ratio: '16:9', duration: 5, resolution: '720p', }, ) console.log(response) ``` Terminal window ``` curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \ --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \ --header "Content-Type: application/json" \ --data '{ "model": "bytedance/seedance-2.0", "input": { "image": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAnklEQVR42u2XQRLAIAgD8/839i/26qFCACm0ozPe1KwcQsAoXvgcAABxpwFowl4QWITHxW0LCBhxVngF4gKIirMQyBRnIJAtrkE8AuwWnyFEgKzfS1UA+3sWTju3BGAu7gKYIfBW+Q/AAQgBeMCkt1wVsLZjcwUYG2Z9wGLHZitWk1DEisubUYt2XB5IWkSyFqG0RSxvMZi0Gc1+Ox3fm00ZJ5mGVtkAAAAASUVORK5CYII=", "prompt": "The character begins walking forward through the scene", "aspect_ratio": "16:9", "duration": 5, "resolution": "720p" } }' ``` * [ Output ](#tab-panel-330) * [ Raw response ](#tab-panel-331) ``` { "state": "Completed", "result": { "video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0/image-to-video.mp4" }, "gatewayMetadata": { "keySource": "Unified" } } ``` **Portrait Video** — Vertical video for social media * [ TypeScript ](#tab-panel-338) * [ cURL ](#tab-panel-339) TypeScript ``` const response = await env.AI.run( 'bytedance/seedance-2.0', { prompt: 'Abstract ink drops spreading through water, vivid colors mixing in slow motion', aspect_ratio: '9:16', duration: 5, resolution: '720p', }, ) console.log(response) ``` Terminal window ``` curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \ --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \ --header "Content-Type: application/json" \ --data '{ "model": "bytedance/seedance-2.0", "input": { "prompt": "Abstract ink drops spreading through water, vivid colors mixing in slow motion", "aspect_ratio": "9:16", "duration": 5, "resolution": "720p" } }' ``` * [ Output ](#tab-panel-334) * [ Raw response ](#tab-panel-335) ``` { "state": "Completed", "result": { "video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0/portrait-video.mp4" }, "gatewayMetadata": { "keySource": "Unified" } } ``` ## Parameters * [ Input ](#tab-panel-340) * [ Output ](#tab-panel-341) aspect\_ratio `string`requireddefault: 16:9enum: 16:9, 4:3, 1:1, 3:4, 9:16, 21:9, 9:21Video aspect ratio. Ignored if an image is used. camera\_fixed `boolean`requireddefault: falseWhether to fix camera position duration `integer`requireddefault: 5maximum: 12minimum: 4Video duration in seconds fps `number`requireddefault: 24const: 24Frame rate (frames per second) generate\_audio `boolean`Whether to generate audio with the video image `string`Reference image (HTTP(S) URL or base64 data URI) for image-to-video last\_frame\_image `string`Reference image (HTTP(S) URL or base64 data URI) for last-frame guidance. Only works if an image start frame is also given. prompt `string`requiredmaxLength: 2000Text prompt describing the video to generate ▶reference\_images\[\] `array`maxItems: 4Reference images (1-4, HTTP(S) URLs or base64 data URIs) to guide video generation for characters, avatars, clothing, or environments. Cannot be used with 1080p resolution or first/last frame images. reference\_video `string`Reference video (HTTP(S) URL or base64 data URI) for style/motion guidance resolution `string`requireddefault: 720penum: 480p, 720p, 1080pVideo resolution seed `integer`maximum: 9007199254740991minimum: \-9007199254740991Random seed for reproducible generation watermark `boolean`requireddefault: falseWhether to add a watermark to the output video video `string`format: uriURL to the generated video ## API Schemas (Raw) Input Output ```json {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/ai/","name":"AI"}},{"@type":"ListItem","position":3,"item":{"@id":"/ai/models/","name":"Models"}}]} ```