Lynx
Playground
Try it on WavespeedAI!Effortlessly create subject-consistent videos with Lynx by ByteDance, a cutting-edge tool designed to maintain visual consistency across frames. Whether you’re crafting dynamic animations or seamless video content, Lynx ensures your subject stays true to form, delivering professional-quality results with ease!
Features
ByteDance Lynx
Easily create subject-consistent videos with Lynx by ByteDance, an advanced image-to-video model designed to keep a stable visual appearance across frames. Whether you’re making dynamic animations or smooth video content, Lynx ensures your subject stays consistent, delivering professional-quality results effortlessly.
Why it looks great
- Subject consistency: preserves the identity, appearance, and details of the subject across all frames.
- Smooth motion: generates fluid, natural-looking animations without jitter.
- Flexible aspect ratios: supports 16:9, 9:16, and 1:1 for versatile use cases.
- Prompt control: guide motion, style, and atmosphere with descriptive text.
- Image-driven video: start from any uploaded image and transform it into a short video clip.
Limits and Performance
- Output resolution: depends on chosen aspect ratio (16:9, 9:16, or 1:1).
- Max clip length per job: 5 seconds
- Processing speed: ~5–12 seconds of wall time per 1 second of video (varies by queue and complexity)
Pricing
Each run costs just $0.5!!!
Billing Rules
- Flat rate: $0.50 per generation
- Each run produces a 5-second clip
How to Use
- Write a prompt to describe the motion, scene, or style.
- Upload an image as the subject reference (JPG or PNG).
- Choose the aspect_ratio: 16:9, 9:16, or 1:1.
- Submit the job.
- Download your generated 5-second video.
Pro tips for best quality
- Use high-resolution, clear source images for stronger subject consistency.
- Be specific in your prompts (e.g., “walking forward in a forest with cinematic lighting”).
- Choose the aspect ratio according to your target platform (e.g., 9:16 for TikTok, 16:9 for YouTube).
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/wavespeed-ai/lynx" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
"aspect_ratio": "16:9"
}'
# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"
Parameters
Task Submission Parameters
Request Parameters
| Parameter | Type | Required | Default | Range | Description |
|---|---|---|---|---|---|
| prompt | string | Yes | - | The prompt for generating the output. | |
| image | string | Yes | - | The image for generating the output. | |
| aspect_ratio | string | No | 16:9 | 16:9, 9:16, 1:1 | The aspect ratio of the generated video. |
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 |