About Topaz Astra 2
Topaz Astra 2 is a creative video upscaling model that enhances AI-generated video by adding new detail and texture, up to 4k.
Use this model to enrich stylized or synthetic footage with adjustable creativity and sharpness, optionally guided by a prompt.
Ready to build with Topaz Astra 2?
Try Topaz Astra 2 in the Workbench to prompt it, compare outputs, and iterate on prompts without writing any code. When you're ready to ship, call the same model from our API and build your own apps on top of it.
curl -sSf -X POST https://hub.oxen.ai/api/ai/videos/generate \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $OXEN_API_KEY" \
-d '{
"model": "topazlabs-astra-2-video",
"input_video": "https://hub.oxen.ai/api/repos/ox/Oxen-AI-Assets/file/main/videos/waterfall.mp4",
"resolution": "4k",
"interpolate_frames": false,
"target_fps": 30,
"creativity": 0.5,
"sharp": 0.5
}'Request parameters
Every field Topaz Astra 2 accepts in the request body. See the API reference for response formats.
POST
https://hub.oxen.ai/api/ai/videos/generate| Field | Type | Required | Default | Description |
|---|---|---|---|---|
input_video | stringuri | Yes | — | Video file to enhance and upscale (URL or file path). |
prompt | string | No | "" | Optional prompt to guide enhancement. Limits clips to 450 frames when set. |
resolution | string | No | "4k" | 1080p2k4k |
interpolate_frames | boolean | No | false | Increase the output frame rate by generating new frames. More expensive. |
target_fps | number | No | 30 | Output frame rate after interpolation.2423.9762529.97305059.9460 |
creativity | number | Yes | 0.5 | How much new creative detail to add (0.0 faithful, 1.0 most creative). Range: 0 – 1 |
sharp | number | No | 0.5 | Pre-enhance sharpness (0.0 softens, 0.5 passthrough, 1.0 sharpens). Range: 0 – 1 |