seedance-2.0-watermark-remover

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seedance-2.0-watermark-remover

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Remove Seedance 2.0 watermark (AI生成) from videos automatically. No GPU required. Free open-source tool.

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# Seedance 2.0 Watermark Remover

**Remove the Seedance 2.0 watermark** ("AI生成" / AI-Generated) from videos automatically — no GPU required, no paid tools.

Works on all videos generated by **Seedance 2.0**, **Seedance Pro**, and **Seedance Lite** video generation models. Also removes watermarks from any corner-positioned logo or text overlay.

> Free • Open Source • No GPU Needed • Works on CPU

**Don't want to run code locally?** Use the free cloud version at **[https://muapi.ai/playground/seedance-v2.0-watermark-remover](https://muapi.ai/playground/seedance-v2.0-watermark-remover)** — upload your video and get a clean version instantly.

---

## 🎬 Generate Seedance Videos — Muapi Playgrounds

| Model | Image-to-Video | Text-to-Video |
|-------|---------------|---------------|
| Seedance 2.0 | [Playground](https://muapi.ai/playground/seedance-v2.0-i2v?utm_source=github&utm_medium=readme&utm_campaign=seedance-watermark-remover) | — |
| Seedance 2.0 Mini *(coming soon)* | [Playground](https://muapi.ai/playground/seedance-2.0-mini-image-to-video?utm_source=github&utm_medium=readme&utm_campaign=seedance-watermark-remover) | [Playground](https://muapi.ai/playground/seedance-2.0-mini-text-to-video?utm_source=github&utm_medium=readme&utm_campaign=seedance-watermark-remover) |
| Seedance 2.1 *(coming soon)* | [Playground](https://muapi.ai/playground/seedance-2.1-image-to-video?utm_source=github&utm_medium=readme&utm_campaign=seedance-watermark-remover) | [Playground](https://muapi.ai/playground/seedance-2.1-text-to-video?utm_source=github&utm_medium=readme&utm_campaign=seedance-watermark-remover) |
| Seedance 2.5 *(coming soon)* | [Playground](https://muapi.ai/playground/seedance-2.5-image-to-video?utm_source=github&utm_medium=readme&utm_campaign=seedance-watermark-remover) | [Playground](https://muapi.ai/playground/seedance-2.5-text-to-video?utm_source=github&utm_medium=readme&utm_campaign=seedance-watermark-remover) |

## Related Projects

- [Seedance-2.5-API](https://github.com/SamurAIGPT/Seedance-2.5-API) — Python wrapper for the Seedance 2.5 API — text-to-video, image-to-video, character consistency

- [Seedance-2.0-API](https://github.com/Anil-matcha/Seedance-2.0-API) — Python wrapper to generate Seedance 2 videos — then remove watermarks with this tool
- [seedance2-comfyui](https://github.com/Anil-matcha/seedance2-comfyui) — Generate Seedance 2 videos inside ComfyUI
- [seedance2.5-comfyui](https://github.com/Anil-matcha/seedance2.5-comfyui) — Native Seedance 2.5 ComfyUI custom nodes and example workflows
- [n8n-nodes-seedance2](https://github.com/Anil-matcha/n8n-nodes-seedance2) — Automate Seedance 2 generation in n8n workflows
- [awesome-seedance-2.5-api-prompts](https://github.com/Anil-matcha/awesome-seedance-2.5-api-prompts) — Curated Seedance 2.5 API guide, prompts, camera controls, and video generation examples

---
- [seedance-2.5-mcp](https://github.com/Anil-matcha/seedance-2.5-mcp) — MCP server for generating Seedance 2.5 Preview videos through MuAPI.
- [seedance-2-mcp](https://github.com/Anil-matcha/seedance-2-mcp) — MCP server for generating Seedance 2 videos through MuAPI.

## What Is the Seedance 2.0 Watermark?

Seedance 2.0 (by ByteDance) adds a small **"AI生成"** (AI-Generated) badge to the corner of every generated video. This tool detects and removes that watermark automatically, restoring a clean video without artifacts.

---

## How It Works

1. **Sample & average** ~60 frames — the static Seedance watermark becomes clearly visible in the mean frame while moving content blurs away
2. **Auto-detect corner** using Canny edge density × temporal stability score — the watermark is static and structured; moving content (people, water, foliage) scores low and is ignored
3. **Build a precise mask** via Canny edge detection on the watermark region — traces only the text strokes
4. **Inpaint** each frame with OpenCV TELEA (default, CPU-only) or optionally LaMa AI inpainting (`--lama`)
5. **Reassemble** all frames with the original audio using ffmpeg

---

## Installation

```bash
# Core dependencies (required)
pip install opencv-python-headless numpy

# ffmpeg (required for video reassembly)
# macOS
brew install ffmpeg
# Ubuntu / Debian
sudo apt install ffmpeg

# Optional: LaMa AI inpainting (--lama flag)
pip install torch iopaint
```

---

## Usage

```bash
# Remove Seedance 2.0 watermark — auto-detects corner
python watermark_remover.py input.mp4

# Save to custom output path
python watermark_remover.py input.mp4 -o clean.mp4

# Manual region if auto-detection fails (x, y, width, height in pixels)
python watermark_remover.py input.mp4 -r 10,5,120,60

# Use LaMa AI inpainting for higher quality output (requires torch + iopaint)
python watermark_remover.py input.mp4 --lama
```

---

## Features

- **Removes Seedance 2.0 watermark** ("AI生成") automatically
- Works on **portrait and landscape** video orientations
- Detects watermark in **any of the four corners**
- Handles videos where **people or content move near the watermark corner**
- Supports both **opaque and semi-transparent** watermarks
- **No GPU required** — runs entirely on CPU with OpenCV TELEA inpainting
- Preserves **original audio** in output
- Optional **LaMa AI inpainting** for higher quality results

---

## How Auto-Detection Works

Each corner region (8% height × 12% width) is scored:

```
score = edge_density × (1 / (1 + temporal_std))
```

| Term | Meaning |
|------|---------|
| `edge_density` | Fraction of Canny edge pixels in the mean frame — watermark text has crisp, consistent edges |
| `temporal_std` | Pixel variation across frames — moving content scores high (bad), static watermark scores low (good) |

Using tight corner regions prevents a moving person near the corner from masking the watermark signal.

---

## Options

| Flag | Description |
|------|-------------|
| `input` | Path to input video |
| `-o`, `--output` | Output file path (default: `<input>_clean.mp4`) |
| `-r`, `--region` | Manual watermark region `x,y,w,h` — skips auto-detection |
| `--lama` | Use LaMa AI inpainting (requires `torch` + `iopaint`) |

---

## Requirements

- Python 3.8+
- `opencv-python` or `opencv-python-headless`
- `numpy`
- `ffmpeg` (system install)
- `torch` + `iopaint` *(only for `--lama`)*

---

## Related

- [Free Cloud Version](https://muapi.ai/playground/seedance-2.0-watermark-remover) — remove Seedance watermarks online, no setup required
- [muapi.ai](https://muapi.ai) — API platform for Seedance 2.0, Seedance Pro, and other generative media models
- [Seedance 2.0](https://seedance.ai) — ByteDance video generation model
- [iopaint](https://github.com/Sanster/IOPaint) — LaMa inpainting library

---

## License

MIT

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