Audio Multi Settings

A desktop application for batch audio processing operations, built with Electron. This application provides an easy-to-use graphical interface for trimming, converting, and managing audio files.

Features

• Batch Audio Trimming: Trim multiple audio files to specified durations
• Multiple File Selection: Select individual files or entire directories
• Flexible Output: Choose same directory output or custom output locations
• Progress Tracking: Real-time progress bars and status updates
• Multiple Audio Formats: Support for MP3, M4A, WAV, FLAC, AAC files
• Format Conversion: Convert batches of MP3, M4A, WAV, and AAC files to any of the other supported formats
• Audio Extraction: Extract precise segments from one file or entire folders with start/end timestamps, stream-copy mode, and advanced audio controls
• Merge Media: Drag-and-drop multiple audio clips, reorder them visually, and merge with optional stream copy or re-encoding controls
• History/Logs: Automatically track every change locally so you can review what happened at any time
• Automatic FFmpeg Handling: Bundled FFmpeg binaries for easy setup
• Cross-platform: Works on Windows, macOS, and Linux

Quick Start

Installation

1. Clone or download this repository

   git clone <repository-url>
   cd ffmpeg-script-for-auto-trimming-multiple-files

2. Install dependencies

   npm install

3. Start the application

   npm start

Prerequisites

• Node.js (v14 or higher)
• npm (comes with Node.js)

The application will automatically handle FFmpeg installation. If FFmpeg is not found on your system, it will use bundled binaries.

Usage

Basic Audio Trimming

1. Launch the application using npm start
2. Select files using one of these methods:
   • Click "Select Files" to choose individual audio files
   • Click "Select Directory" to process all audio files in a folder
3. Configure settings:
   • Set trim duration (default: 30 minutes)
   • Choose output location (same directory or custom)
4. Click "Start Processing" to begin batch trimming

Supported Audio Formats

• MP3 (.mp3)
• M4A (.m4a)
• WAV (.wav)
• FLAC (.flac)
• AAC (.aac)

Output Options

• Same Directory: Trimmed files are saved alongside originals with "_trimmed" suffix
• Custom Directory: Choose a different output location for all processed files

Format Conversion

1. Navigate to the Convert Format tab in the sidebar
2. Select individual files or load every supported file in a directory
3. Choose the desired target format (MP3, M4A, WAV, or AAC)
4. Optional: set a custom suffix and destination directory
5. Click Start Conversion to batch-convert the selected files

Audio Extraction

1. Open the Extract Audio tab in the sidebar
2. Select specific files or load every supported file from a directory
3. Enter a start time and end time (HH:MM:SS) to define the clip window
4. Choose the desired output format and suffix (defaults to _extract)
5. (Optional) Configure codec, bitrate, sample rate, channel count, track mapping (-map), or provide a custom filter graph
6. Select Copy original stream to use -c copy and avoid re-encoding when the container/codec already match
7. Optionally route clips to a custom directory
8. Click Extract Audio to generate clipped audio segments for all selected inputs

Merge Media

1. Switch to the Merge Media tab
2. Drag & drop audio files into the mini GUI or click Select Files
3. Reorder clips (top to bottom) using the Up/Down controls; remove any unwanted entries
4. Pick the output format and optional codec/bitrate/sample-rate/filter overrides
5. Choose Copy original stream to attempt a fast -c copy merge when all files share the same codec/container
6. Set an output suffix and directory preference
7. Click Merge Audio to concatenate every file into a single track

History / Logs

1. Visit the History/Logs tab to review all actions performed in the app
2. Entries are added automatically whenever you change settings, select files, or run operations
3. Use Clear History to reset the log if desired (a new entry will note the clear action)
4. Note: The full history stays on your device only and is not transmitted anywhere

Development

Available Scripts

• npm start - Launch the application in development mode
• npm run build - Build the application for distribution
• npm test - Run tests (currently no tests configured)

Project Structure

├── main.js              # Electron main process
├── preload.js           # Preload script for security
├── src/
│   ├── index.html       # Main UI
│   ├── renderer.js      # Frontend logic
│   └── styles.css       # Application styles
├── services/
│   ├── ffmpeg.js        # Audio processing service
│   └── database.js      # Data persistence
└── script_trim_30min.bat # Legacy batch script

Building for Distribution

To create a distributable version of the application:

npm run build

This will create platform-specific installers in the dist/ directory.

Troubleshooting

FFmpeg Issues

• The application automatically detects and configures FFmpeg
• If FFmpeg fails to install automatically, download it from ffmpeg.org
• Add FFmpeg to your system PATH or place binaries in the project root

Common Problems

• Application won't start: Ensure Node.js v14+ is installed
• No audio files found: Check file extensions are supported (MP3, M4A, WAV, FLAC, AAC)
• Processing fails: Verify input files are not corrupted and have proper permissions

Legacy Batch Script

For command-line usage, a legacy batch script (script_trim_30min.bat) is included:

1. Edit the script to set your directory path
2. Modify file extensions if needed (currently set to .m4a)
3. Run the batch file directly

License

MIT License - see package.json for details

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Test thoroughly
5. Submit a pull request