# PixVerse Modify

> Run PixVerse Modify by pixverse online or via API. From $0.04 per second, no setup.

**URL:** https://inference.sh/apps/pixverse/modify
**Last updated:** 2026-08-04

---

PixVerse Modify — edit video content using text prompts. Swap subjects, add elements, or restyle regions with reference images.

- app: `pixverse/modify`
- maker: [pixverse](https://inference.sh/apps/pixverse.md)
- category: [video](https://inference.sh/apps/category/video.md)
- input → output: video → video
- tasks: [video to video](https://inference.sh/apps/tag/video-to-video.md)
- price: $0.04/sec (360p), $0.05/sec (540p), $0.06/sec (720p)
- runs via: api, javascript and python sdk, belt cli, mcp

## modify API Guide

### About
pixverse modify — edit video content using text prompts. swap subjects, add elements, or restyle regions with reference images.

### 1. Calling the API

#### Install the Client

```bash
pip install inferencesh
```

#### Setup Your API Key
Set `INFERENCE_API_KEY` as an environment variable. Get your key from settings → api keys.

```bash
export INFERENCE_API_KEY="inf_your_key"
```

#### Run and Get Result

```python
import os
from inferencesh import inference

client = inference(api_key=os.environ["INFERENCE_API_KEY"])


result = client.run({
        "app": "pixverse/modify@6j0em3kd",
        "input": {
            "video": "https://example.com/file.png",
            "prompt": "prompt"
        }
    })

print(result["output"])
```

#### Stream Live Updates

```python
import os
from inferencesh import inference

client = inference(api_key=os.environ["INFERENCE_API_KEY"])


## stream=True yields updates as they arrive
for update in client.run({
        "app": "pixverse/modify@6j0em3kd",
        "input": {
            "video": "https://example.com/file.png",
            "prompt": "prompt"
        }
    }, stream=True):
    if update.get("progress"):
        print(f"progress: {update['progress']}%")
    if update.get("output"):
        print(f"output: {update['output']}")
```

### 2. Authentication
The API uses API keys for authentication. See the authentication docs for detailed setup instructions.

### 3. Files

#### Automatic Upload

```python
## local file paths are automatically uploaded
result = client.run({
    "app": "pixverse/modify@6j0em3kd",
    "input": {
        "image": "/path/to/local/image.png",  # detected & uploaded
        "audio": "https://example.com/audio.mp3",  # url passed through
    }
})
```

#### Manual Upload

```python
## upload and get a hosted URL
file = client.files.upload("/path/to/file.png")
print(file.uri)  # https://cloud.inference.sh/...
```

### 4. Schema

#### Input
- **video** (string) *required*: Source video to modify. MP4/MOV, max 100MB, max 1920px, max 30s.
- **prompt** (string) *required*: Modification instruction. Use @selection0/@selection1 for mask refs and @img0/@img1 for image refs.
- **reference_images** (array): Reference images for swap/add/restyle operations (max 3). Referenced as @img0, @img1, @img2 in prompt.
- **quality** (string): Output resolution (currently only 540p supported)

#### Output
- **video** (string): Modified video file

## other video apps

- [H3 Max Styles](https://inference.sh/apps/falai/minimax-h3-max-styles.md): $0.08/sec (768P)
- [H3 Max Insert Video](https://inference.sh/apps/falai/minimax-h3-max-insert-video.md): $0.05/sec 480p, $0.06/sec 768p
- [H3 Max 3D to Video](https://inference.sh/apps/falai/minimax-h3-max-3d-to-video.md): $0.50/request + $0.05/sec (480P), $0.08/sec (768P), $0.16/sec (1080P) + $0.10/generated ref; 5s min
- [H3 Max Recast](https://inference.sh/apps/falai/minimax-h3-max-recast.md): $0.30/sec at 768P, $0.45/sec at 1080P
- [H3 Max Relight](https://inference.sh/apps/falai/minimax-h3-max-relight.md): $0.05/s 480P, $0.08/s 768P, $0.16/s 1080P, $0.32/s 2K; up to 15s/video

## faq

### how much does PixVerse Modify cost?

$0.04/sec (360p), $0.05/sec (540p), $0.06/sec (720p). you pay per run from your inference shell credits. no subscription is required.

### how do I run PixVerse Modify via api?

call pixverse/modify with the javascript or python sdk, the rest api, or `belt app run pixverse/modify` from a terminal. the api reference on this page lists every input.

### who makes PixVerse Modify?

PixVerse Modify is made by pixverse and runs on inference shell. every pixverse app is listed at https://inference.sh/apps/pixverse.

### can my agent use PixVerse Modify?

yes. agents call it as a tool through the inference shell mcp server (https://api.inference.sh/mcp), the belt cli or the sdk, and pay per run like you do.

### what are the alternatives to PixVerse Modify?

other video apps on inference shell include H3 Max Styles, H3 Max Insert Video, H3 Max 3D to Video, H3 Max Recast. they run through the same api, so switching is a one-line change.