# ByteDance SeedVR2 Video Upscale API

> Seedvr Upscale Video by Bytedance - AI-powered video editing and transformation. Apply style transfer, motion control, lip-sync, and visual effects to existing videos with natural language instructions.

Source: https://www.sandbase.ai/model/bytedance/seedvr/upscale/video
API reference: https://www.sandbase.ai/model/bytedance/seedvr/upscale/video/docs

## Facts

- Provider: ByteDance
- Type: Video model
- Model ID: `bytedance/seedvr/upscale/video`
- Price: From $0.31 per run
- Capabilities: video to video
- Billing: pay per use from one SandBase balance; no provider account or subscription needed

## Call it

- Unified Run API: `POST https://api.sandbase.ai/v1/run`

```bash
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "bytedance/seedvr/upscale/video",
  "video": "https://static.sandbase.ai/examples/bytedance/seedvr/upscale/video/input_video_0.mp4",
  "noise_scale": 0.1,
  "upscale_mode": "factor",
  "output_format": "X264 (.mp4)",
  "output_quality": "high",
  "upscale_factor": 2,
  "output_write_mode": "balanced",
  "target_resolution": "1080p"
}'
```

The response returns a run id; poll `GET https://api.sandbase.ai/v1/run/{id}` until the status is `completed` or `failed`.

## FAQ

### How do I call ByteDance SeedVR2 Video Upscale through SandBase?

Create a SandBase API key, then send requests with the model ID "bytedance/seedvr/upscale/video" to Unified Run API (/v1/run) at https://api.sandbase.ai. The request examples on this page show the exact payload.

### Do I need a separate ByteDance account?

No. One SandBase API key and balance gives you access to ByteDance SeedVR2 Video Upscale and the other models in the catalog; you do not need to sign up with ByteDance separately.

## README

### SeedVR2 Video Upscale

SeedVR2 video upscale restores and enlarges a video by a factor (default 2×) or to a target resolution, with temporal consistency across frames.

#### Fields

| Field | Type | Default | Notes |
|---|---|---|---|
| `video` | video URL, required | — | Video to upscale. |
| `output_format` | `X264 (.mp4)` / `VP9 (.webm)` / `PRORES4444 (.mov)` / `GIF (.gif)` | `X264 (.mp4)` | Output file format. |
| `seed` | integer | random | Fix it to compare prompt changes. |
| `output_quality` | `low` / `medium` / `high` / `maximum` | `high` | Encoder quality. |
| `noise_scale` | number 0–1 | 0.1 | Higher values add more restored detail. |
| `target_resolution` | `720p` / `1080p` / `1440p` / `2160p` | `1080p` | Used in `target` mode. |
| `upscale_factor` | number 1–10 | 2 | Used in `factor` mode. |
| `output_write_mode` | `fast` / `balanced` / `small` | `balanced` | Encoder speed/size trade-off. |
| `upscale_mode` | `target` / `factor` | `factor` | `factor` multiplies the input size; `target` upscales to `target_resolution`. |

#### Billing

Billed on output video data at $0.001 per megapixel (width × height × frames). For 30fps output that is about $0.028 per second at 720p, $0.062 at 1080p, and $0.25 at 4K. The quote before submission assumes 5 seconds of 1080p at 30fps.

| Output at 30fps | 720p | 1080p | 4K |
|---|---|---|---|
| 5s | $0.1382 | $0.311 | $1.2442 |
| 10s | $0.2765 | $0.6221 | $2.4883 |
| 30s | $0.8294 | $1.8662 | $7.465 |

Failed runs are not charged.

#### Limits

- Higher factors on long clips can be expensive; check the output size first.

#### Also on SandBase

Related: `bytedance/upscaler/video` (per-second pricing), `bytedance/seedvr/upscale/image`.