Bytedance Seedance 2.0 Fast Image To Video Fast
Playground
Try it on WavespeedAI!Seedance 2.0 Fast (Image-to-Video Fast) generates cinematic 720p/1080p videos from reference images using speed-optimized inference with fast upscaling from 480p — the fastest and most affordable Seedance image-to-video option with native audio-visual synchronization and director-level control.
Features
Seedance 2.0 Fast Image-to-Video Fast
Seedance 2.0 Fast Image-to-Video Fast is the fastest and most affordable Seedance image-to-video option — combining speed-optimized inference with fast upscaling from 480p to deliver 720p and 1080p cinematic videos from reference images with native audio-visual synchronization.
Key Features
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Fastest Seedance image-to-video Speed-optimized inference combined with fast upscaling for maximum throughput.
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Most affordable HD output Starting at $0.60 per 5 seconds at 720p.
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Image-faithful generation Preserves the reference image’s subject identity, composition, and style.
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Native audio-visual synchronization Generates video with synchronized audio in a single pass.
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Director-level control Camera movement, lighting, and character performance controlled through prompts.
Parameters
| Parameter | Required | Description |
|---|---|---|
| prompt | Yes | Detailed description of the cinematic scene |
| image | Yes | Start image URL to guide the video generation |
| last_image | No | Last frame image URL for video continuation |
| duration | No | Video length: 5 (default), 10, or 15 seconds |
| aspect_ratio | No | Output format: 16:9, 9:16, 4:3, 3:4, 1:1, 21:9 (default: adaptive) |
| resolution | No | Output resolution: 720p (default) or 1080p |
Pricing
| Resolution | Duration | Cost |
|---|---|---|
| 720p | 5 s | $0.60 |
| 720p | 10 s | $1.20 |
| 720p | 15 s | $1.80 |
| 1080p | 5 s | $0.65 |
| 1080p | 10 s | $1.30 |
| 1080p | 15 s | $1.95 |
Billing Rules
- 720p rate: $0.60 per 5 seconds
- 1080p rate: $0.65 per 5 seconds
- Duration options: 5, 10, or 15 seconds
Best Use Cases
- Maximum Speed — Fastest possible Seedance image-to-video generation at HD resolution.
- High-Volume Production — Most cost-effective HD generation for large content libraries.
- Product Animation — Fast turnaround on product shot animations in HD.
- A/B Testing — Generate many variations from the same reference image efficiently.
Pro Tips
- Use this for maximum speed and lowest cost at HD resolution.
- Upload high-quality reference images for best subject preservation.
- Switch to standard Seedance 2.0 for final production quality.
- Start with 5s to iterate, then extend once the look is right.
Notes
- Native audio generation included.
- Resolution options: 720p and 1080p only (generated via 480p + fast upscale with speed-optimized inference).
- Duration options: 5, 10, or 15 seconds.
- Aspect ratio follows the input image composition.
Related Models
- Seedance 2.0 Fast Image-to-Video — Speed-optimized native resolution generation.
- Seedance 2.0 Image-to-Video Fast — Standard inference + fast upscale.
- Seedance 2.0 Image-to-Video — Highest quality native resolution generation.
Authentication
For authentication details, please refer to the Authentication Guide.
API Endpoints
Submit Task & Query Result
# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/bytedance/seedance-2.0-fast/image-to-video-fast" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
"resolution": "720p",
"duration": 5,
"enable_web_search": false
}'
# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"
Parameters
Task Submission Parameters
Request Parameters
| Parameter | Type | Required | Default | Range | Description |
|---|---|---|---|---|---|
| prompt | string | Yes | - | Describe the scene, action, camera movement, and mood for the video. | |
| image | string | Yes | - | Start image URL to guide the video generation. | |
| last_image | string | No | - | - | Last frame image URL for video continuation. |
| aspect_ratio | string | No | - | 16:9, 9:16, 4:3, 3:4, 1:1, 21:9 | The aspect ratio of the generated video. If not specified, adapts to the input image. |
| resolution | string | No | 720p | 720p, 1080p | The output video resolution. |
| duration | integer | No | 5 | 5, 10, 15 | The duration of the generated video in seconds. |
| enable_web_search | boolean | No | false | - | Enable web search for real-time information. |
Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data.id | string | Unique identifier for the prediction, Task Id |
| data.model | string | Model ID used for the prediction |
| data.outputs | array | Array of URLs to the generated content (empty when status is not completed) |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.has_nsfw_contents | array | Array of boolean values indicating NSFW detection for each output |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |
Result Request Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| id | string | Yes | - | Task ID |
Result Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data | object | The prediction data object containing all details |
| data.id | string | Unique identifier for the prediction, the ID of the prediction to get |
| data.model | string | Model ID used for the prediction |
| data.outputs | object | Array of URLs to the generated content (empty when status is not completed). |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |