Audio_Cutter

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[![Play Store](https://img.shields.io/badge/Download-Play%20Store-34A853?style=for-the-badge&logo=google-play&logoColor=white)](https://play.google.com/store/apps/details?id=com.nutrino.audiocutter)
[![Release](https://img.shields.io/github/v/release/Codexyze/Audio_Cutter?style=for-the-badge&color=blue)](https://github.com/Codexyze/Audio_Cutter/releases)
[![License](https://img.shields.io/github/license/Codexyze/Audio_Cutter?style=for-the-badge&color=lightgray)](https://raw.githubusercontent.com/Codexyze/Audio_Cutter/master/LICENSE)

A smooth, modern and powerful **audio & video editing app** built with Jetpack Compose, ExoPlayer, and Media3 Transformer.  
It lets users **trim audio & video, extract audio from videos, merge audio tracks, multi-crop audio & video, convert audio formats, and record audio from the microphone** — all locally on device.  
This project follows **Clean Architecture + MVVM + Hilt**, making it modular, testable, and scalable.

> 📦 **Latest Stable Release:**  
> 👉 [Version 4.0.0](https://github.com/Codexyze/Audio_Cutter/releases/tag/v4.0.0)  
>  
---
> 🚀 Audio Cutter is now **live on the Play Store**:  
> 👉 https://play.google.com/store/apps/details?id=com.nutrino.audiocutter  
> 
---
> 🎶 This project is a **sub-feature** of my main music app **LHYTHM**:  
> 👉 https://github.com/Codexyze/Lhythm
---
> 🎶 Offical Website for this product :  
> 👉 https://codexyze.github.io/audiocutterwebpage.html

---

> 🎶 Offical Promo for this product :  
> 👉 https://youtu.be/nTOdyBkWt9E?si=XtqHkJ5PLhlJDMro

---

</div>

---

## 🧠 Features

### Audio Trimmer
- 🎧 **Play any audio file**  
- ✂️ **Trim audio easily using a slider-based editor**  
- 🔊 **Real-time playback preview**  
- 💾 **Save trimmed files with your custom filename**  
- 🎵 **Create ringtones, alarms, and notification sounds**

### Video Trimmer
- 🎬 **Trim video files with precision**  
- 📹 **Real-time video preview while editing**  
- ⏱️ **Slider-based start and end time selection**  
- 💾 **Save trimmed videos with custom filename**

### Audio Speed
- ⏩ **Change playback speed of audio files**
- 🎧 **Preview audio at different speeds**
- 📋 **Select from presets (0.25x to 3.0x) or enter custom speed**
- 💾 **Save speed-adjusted audio with custom filename**

### Video Speed
- ⏩ **Change playback speed of video files**
- 📹 **Real-time video preview at different speeds**
- 📋 **Select from presets (0.25x to 3.0x) or enter custom speed**
- 💾 **Save speed-adjusted video with custom filename**

### Mute Video
- 🔇 **Remove audio from any video file**
- 📹 **Preview video before muting**
- 💾 **Save muted video with custom filename**

### Audio Extractor
- 🎵 **Extract audio from video files**  
- 🎧 **Select specific time range to extract**  
- 💾 **Save extracted audio as M4A format**  
- 📹 **Preview video before extraction**

### Audio Merge
- 🎼 **Merge multiple audio tracks into one**  
- 🔢 **Select songs in custom sequence**  
- ➕ **Combine 2 or more audio files**  
- 💾 **Save merged audio with custom filename**

### Multi Crop Audio
- ✂️ **Define multiple crop segments on a single audio file**  
- 🔢 **Add as many segments as you need**  
- ▶️ **Play each segment individually before cropping**  
- 🔗 **Crop and merge all segments into one output file**  
- 💾 **Save with custom filename to Music/AudioCutter**

### Multi Crop Video
- 🎬 **Define multiple crop segments on a single video file**  
- 🔢 **Add as many segments as you need**  
- ▶️ **Preview each segment individually before cropping**  
- 🔗 **Crop and merge all segments into one output file**  
- ⚠️ **Beta feature — works best with MP4 format**

### Convert Audio Format
- 🔄 **Convert audio files to different formats**  
- 🎧 **Preview audio before conversion**  
- 📋 **Dropdown selector for output format**  
- 💾 **Save converted audio to Music/AudioCutter**

### Record Audio
- 🎙️ **Record audio from device microphone**  
- ⏯️ **Start, pause, resume, and stop recording**  
- ⏱️ **Live timer display while recording**  
- 🎵 **Animated mic indicator during recording**  
- 💾 **Save recordings as M4A to Music/AudioCutter**

### Recent Works
- 📂 **Access all your previously edited audio and video files**
- 🔍 **Search through your history by filename or feature type**
- 🎵 **Set any edited audio as your Ringtone or Notification sound**
- 🗑️ **Manage storage by deleting old processed files**
- ◀️ **Re-edit multi-crop segments easily**

### Theme Selection (Pro)
- 🎨 **Personalize the app with multiple color themes**
- ✨ **Choose from Red, Green, Blue, Yellow, Purple, Pink, and Orange**
- 🚀 **Updates the entire app UI instantly**

### General
- ⚡ **Fast performance with clean UI**  
- 🔐 **Local processing — your files stay on device**  
- 🧪 Built using modern Android stack + clean architecture  
- 💎 **Pro Version** — Unlock premium features like Theme Selection and ad-free experience
- 📢 **AdMob integration** — Banner ads & Interstitial ads  
- 💛 **Support the developer** — optional ad-watching via FeedBack Ads  
- 🔒 **Privacy Policy** accessible from the app  
- 📩 **Feature Request** — email the developer directly from the app

---
## 👨‍💻 Developer Take

Hi, I’m **Akshay Sarapure** 👋

This project holds a special place for me. **Audio Cutter** is my **first application published on the Google Play Store**, and it represents an important learning milestone in my Android development journey.

I want to be transparent about the intent behind this project.  
While there are more powerful approaches for media processing (such as using native FFmpeg through JNI), I intentionally chose **ExoPlayer and Media3 Transformer** for this app. The goal was to deeply understand **Android’s native media pipeline**, modern playback APIs, and transformation workflows — not just to ship a feature-heavy product.

Yes, there may be flaws, edge cases, or areas that could be optimized further. I acknowledge that.  
But this project was built with a clear purpose: **to learn, to experiment, and to build something practical that genuinely gets the job done**.

Every feature in this app helped me understand real-world challenges like media handling, performance trade-offs, user experience, and clean architecture. The app may not be perfect — but it is honest work, and it delivers on its core promise.

I believe sharing this context openly reflects the ideology behind the project and the mindset .

Thanks for taking the time to check out the project 
---

## 📂 Folder Structure

```
com.nutrino.audiocutter
├── core
│   └── MediaPlayerManager          # ExoPlayer setup & control
│
├── data
│   ├── DataClass                   # Data models (Song, Video, CropSegment)
│   └── RepoImpl                    # Implementation of domain repositories
│
├── di
│   ├── BaseApplication             # Hilt Application class
│   └── DiModule                    # Dependency injection setup
│
├── domain
│   ├── Repository                  # Interfaces for data sources
│   ├── StateHandeling              # Sealed classes & data classes for UI states
│   └── UseCases                    # Business logic use-cases
│
├── presentation
│   ├── Navigation                  # App navigation (NavHost, Routes)
│   ├── Screens                     # All composables (Trimmer, MultiCrop, Record, Success, Error)
│   ├── Utils                       # Helpers / formatters (TimeFormat, AdsHelper)
│   ├── ViewModel                   # ViewModels (Trim, Merge, MultiCrop, Record, Ads, etc.)
│   └── components                  # Reusable composables (BannerAdView)
│  
```

---

## 🧪 Tech Stack

- 💚 Jetpack Compose  
- 🔥 Kotlin  
- 🎞️ ExoPlayer (Media3)  
- 🎛️ Media3 Transformer  
- 🧩 Hilt (DI)  
- 🎯 Clean Architecture + MVVM  
- 📂 Scoped Storage + MediaStore  
- 📢 AdMob (Banner + Interstitial)  
- 🎨 Material 3 + Material Icons Extended  
- 🚀 Splash Screen API

---

## 🛠 How to Use

### Audio Trimmer
1. Select any audio file from storage  
2. File loads and plays via ExoPlayer  
3. Adjust trimming using the **interactive slider**  
4. Enter your desired output filename  
5. Tap **Trim Audio**  
6. Trimmed result is saved instantly 🎉

### Video Trimmer
1. Select any video file from storage  
2. Video loads with preview  
3. Adjust start and end time using the **slider**  
4. Enter your desired output filename  
5. Tap **Trim Video**  
6. Trimmed video is saved 🎉

### Audio Speed
1. Select **Audio Speed** from main menu
2. Choose an audio file from storage
3. Use the **slider** or **dropdown** to adjust speed
4. Enter output filename
5. Tap **Apply Speed**
6. Speed-adjusted audio is saved 🎉

### Video Speed
1. Select **Video Speed** from main menu
2. Choose a video file from storage
3. Use the **slider** or **dropdown** to adjust speed
4. Enter output filename
5. Tap **Apply Speed**
6. Speed-adjusted video is saved 🎉

### Mute Video
1. Select **Mute Video** from main menu
2. Choose a video file from storage
3. Preview the video
4. Enter output filename
5. Tap **Mute Video**
6. Muted video is saved 🎉

### Audio Extractor
1. Select any video file from storage  
2. Video preview loads  
3. Choose the time range to extract audio  
4. Enter your desired output filename  
5. Tap **Extract Audio**  
6. Audio extracted and saved as M4A 🎉

### Audio Merge
1. Select **Audio Merge** from main menu  
2. Choose 2 or more songs in desired sequence  
3. Songs show numbered order (1, 2, 3...)  
4. Enter output filename  
5. Tap **Merge Tracks**  
6. Merged audio saved instantly 🎉

### Multi Crop Audio
1. Select **Multi Crop Audio** from main menu  
2. Choose an audio file from storage  
3. Add multiple crop segments using start/end sliders  
4. Play each segment individually to preview  
5. Enter output filename  
6. Tap **Crop and Merge**  
7. All segments merged into one file 🎉

### Multi Crop Video
1. Select **Multi Crop Video** from main menu  
2. Choose a video file from storage  
3. Add multiple crop segments using start/end sliders  
4. Preview each segment individually  
5. Enter output filename  
6. Tap **Crop and Merge**  
7. All segments merged into one video 🎉

### Convert Audio Format
1. Select **Convert Audio** from main menu  
2. Choose an audio file from storage  
3. Preview the audio via player  
4. Select the desired output format from dropdown  
5. Enter output filename  
6. Tap **Convert Audio**  
7. Converted file saved to Music/AudioCutter 🎉

### Record Audio
1. Select **Record Audio** from main menu  
2. Grant microphone permission when prompted  
3. Enter your desired filename  
4. Tap the **record button** to start recording  
5. Use **pause/resume** to control the recording  
6. Tap **stop** when finished  
7. Recording saved as M4A to Music/AudioCutter 🎉

### Theme Selection
1. Tap **Theme** from main menu
2. Choose your favorite color from the grid (Requires Pro)
3. App theme updates immediately 🎉

### Recent Works
1. Select **Recent** from main menu
2. View all your saved creations
3. Tap a card to **play** the file
4. Use the **Notifications icon** to set as Ringtone
5. Use the **Search bar** to find specific files

---

## 📦 Versions

| Version | Status | Link |
|--------|--------|------|
| **1.0.0** | Beta (unstable) | https://github.com/Codexyze/Audio_Cutter/releases/tag/v1.0.0 |
| **1.0.2** | Stable | https://github.com/Codexyze/Audio_Cutter/releases/tag/v1.02 |
| **Play Store** | Live | https://play.google.com/store/apps/details?id=com.nutrino.audiocutter |

---

## ⚙️ Permissions

```xml
<uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
<uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"
    android:maxSdkVersion="32" />

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.google.android.gms.permission.AD_ID" />
```

---

## 📱 More Apps & Contact

If you like Audio Cutter, you might enjoy my other apps too! Explore more on Google Play:  
👉 https://play.google.com/store/apps/dev?id=9069883027072615264

Have suggestions, feature ideas, or found a bug? I'm always happy to improve the project.  
📩 Email: nutrinonovarage@gmail.com

---

## 📥 Clone the Project

```bash
git clone https://github.com/Codexyze/Audio_Cutter
```

---

## 🧾 License

This project is licensed under the MIT License. See the full license here:  
👉 [LICENSE](LICENSE)

---

## ⭐ Support

If you found this project helpful or interesting:

- ⭐ Star the repository
- 🐛 Open issues or send PRs
- 📲 Download and rate the app on Google Play
- 🔗 Share it with others

Your support keeps the project growing!

---

## 🙏 Thanks

Thanks for checking out Audio Cutter! More improvements, features, and refinements are on the way. Stay tuned — and happy trimming!

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