easy_video_editor

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easy_video_editor

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A lightweight Flutter plugin for video editing without FFmpeg dependency. Trim, merge, adjust speed and more on Android & iOS.

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# Easy Video Editor

A powerful Flutter plugin for video editing operations with a simple, chainable API - without FFmpeg dependency. Perform common video editing tasks like trimming, merging, speed adjustment, and more with ease by leveraging native platform capabilities.

[![pub package](https://img.shields.io/pub/v/easy_video_editor.svg)](https://pub.dev/packages/easy_video_editor)
[![likes](https://img.shields.io/pub/likes/easy_video_editor)](https://pub.dev/packages/easy_video_editor/score)
[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)

## Features

- 🎬 **Video Trimming**: Cut videos at specified start and end times
- 🔄 **Video Merging**: Combine multiple videos into one
- ⚡ **Speed Adjustment**: Change video playback speed
- 🔊 **Audio Operations**:
  - Extract audio from video
  - Remove audio from video
- 📐 **Video Transformations**:
  - Scale video to specific dimensions
  - Rotate video by specified degrees
  - Crop video to specific aspect ratios
  - Flip video horizontally or vertically
- 🗜️ **Video Compression**:
  - Compress videos to standard resolutions (360p to 4K)
  - Maintains aspect ratio while resizing
- 🖼️ **Thumbnail Generation**: Create thumbnails from video frames
- 🧩 **Raw Frame Extraction**: Read RGBA8888 pixels from a video frame
- 📊 **Video Metadata**: Retrieve detailed information about video files
- 🔗 **Builder Pattern API**: Chain operations for complex video editing
- 📱 **Platform Support**: Works on both Android and iOS
- 📦 **iOS Package Managers**: Supports both CocoaPods and Swift Package Manager

## Installation

Add this to your package's `pubspec.yaml` file:

```yaml
dependencies:
  easy_video_editor: ^0.1.6
```

Or install via command line:

```bash
flutter pub add easy_video_editor
```

## Usage

### Basic Example

```dart
import 'package:easy_video_editor/easy_video_editor.dart';

// Create a builder instance
final editor = VideoEditorBuilder(videoPath: '/path/to/video.mp4')
  .trim(startTimeMs: 0, endTimeMs: 5000)  // Trim first 5 seconds
  .speed(speed: 1.5)     // Speed up by 1.5x
  .removeAudio(); // Remove audio

// Export the edited video with progress tracking
final outputPath = await editor.export(
  outputPath: '/path/to/output.mp4', // Optional output path
  onProgress: (progress) {
    // Progress ranges from 0.0 to 1.0 (0% to 100%)
    print('Export progress: ${(progress * 100).toStringAsFixed(1)}%');
    // Update UI with progress information
    // e.g., setState(() => exportProgress = progress);
  }
);
```

### Advanced Example

```dart
final editor = VideoEditorBuilder(videoPath: '/path/to/video.mp4')
  // Trim video
  .trim(startTimeMs: 1000, endTimeMs: 6000)

// Merge with another video
  .merge(otherVideoPaths: ['/path/to/second.mp4'])

// Adjust speed
  .speed(speed: 1.5)

// Compress video
  .compress(resolution: VideoResolution.p720)

// Crop video
  .crop(aspectRatio: VideoAspectRatio.ratio16x9)

// Rotate video
  .rotate(degree: RotationDegree.d90)

// Flip video
  .flip(flipDirection: FlipDirection.horizontal);

// Export the final video
final outputPath = await editor.export(
  outputPath: '/path/to/output.mp4' // Optional output path
);

// Extract audio
final audioPath = await editor.extractAudio(
  outputPath: '/path/to/output.m4a' // Optional output path, iOS outputs M4A format
);

// Generate thumbnail
final thumbnailPath = await editor.generateThumbnail(
  positionMs: 2000,
  quality: 85,
  width: 1280,    // optional
  height: 720,    // optional
  exactFrame: true, // optional, request exact-frame extraction when supported
  outputPath: '/path/to/thumbnail.jpg' // Optional output path
);

// Extract raw RGBA8888 frame pixels
final frame = await editor.getFrame(
  positionMs: 2000,
  width: 320, // optional
  height: 180, // optional
  exactFrame: true, // optional, request closest exact frame when supported
);

if (frame != null) {
  print('Frame: ${frame.width}x${frame.height}');
  print('Pixel bytes: ${frame.bytes.length}');
}

// Get video metadata
final metadata = await editor.getVideoMetadata();
print('Duration: ${metadata.duration} ms');
print('Dimensions: ${metadata.width}x${metadata.height}');
print('Orientation: ${metadata.rotation}°');
print('File size: ${metadata.fileSize} bytes');
print('Creation date: ${metadata.date}');
```

### Progress Tracking

```dart
final editor = VideoEditorBuilder(videoPath: '/path/to/video.mp4')
  .trim(startTimeMs: 1000, endTimeMs: 10000)
  .compress(resolution: VideoResolution.p720);

// Track export progress
double exportProgress = 0.0;

// Export with progress updates
final outputPath = await editor.export(
  outputPath: '/path/to/output.mp4',
  onProgress: (progress) {
    setState(() {
      exportProgress = progress; // Update state variable
    });

// Use progress value (0.0 to 1.0) to update UI
    // For example, with a LinearProgressIndicator:
    // LinearProgressIndicator(value: exportProgress)
  }
);
```

### Cancel Operation

```dart
final editor = VideoEditorBuilder(videoPath: '/path/to/video.mp4');

// Start an operation
final outputPath = await editor.trim(startTimeMs: 0, endTimeMs: 5000);

// Cancel the operation
await editor.cancel();
```

## API Reference

### VideoEditorBuilder

The main class for chaining video operations.

#### Constructor

- `VideoEditorBuilder({required String videoPath})`: Creates a new builder instance

#### Methods

- `trim({required int startTimeMs, required int endTimeMs})`: Trim video to specified duration (outputs MP4)
- `merge({required List<String> otherVideoPaths})`: Merge with other videos, fitting mixed dimensions and orientations into one output canvas (outputs MP4)
- `speed({required double speed})`: Adjust playback speed (e.g., 0.5 for half speed, 2.0 for double speed) (outputs MP4)
- `removeAudio()`: Remove audio track (outputs MP4)
- `rotate({required RotationDegree degree})`: Rotate video by 90, 180, or 270 degrees (outputs MP4)
- `crop({required VideoAspectRatio aspectRatio})`: Crop video to predefined aspect ratio (outputs MP4)
- `compress({VideoResolution resolution = VideoResolution.p720})`: Compress video to standard resolution (outputs MP4)
  - Available resolutions: 360p, 480p, 720p, 1080p, 2160p (4K)
  - Maintains original aspect ratio
- `flip({required FlipDirection flipDirection})`: Flip video horizontally or vertically (outputs MP4)
- `export({String? outputPath, void Function(double progress)? onProgress})`: Process all operations and return output path (outputs MP4)
  - `outputPath`: Optional custom path for the output file
  - `onProgress`: Optional callback that receives progress updates (0.0 to 1.0) during export
- `extractAudio({String? outputPath})`: Extract audio to separate file (outputs M4A on iOS, AAC on Android)
- `generateThumbnail({required int positionMs, required int quality, int? width, int? height, bool exactFrame = false, String? outputPath})`: Generate thumbnail (outputs JPEG)
- `getFrame({required int positionMs, int? width, int? height, bool exactFrame = false})`: Extract raw RGBA8888 frame pixels at the requested video position
- `getVideoMetadata()`: Retrieves detailed metadata about the current video file
- `get currentPath`: Gets the current video path

## Platform Specific Setup

### Android

Add the following permissions to your `AndroidManifest.xml`:

```xml
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
```

### iOS

Requires iOS 13.0 or later.

The iOS plugin supports both CocoaPods and Swift Package Manager. Flutter will use Swift Package Manager when it is enabled in your Flutter project and will continue to fall back to CocoaPods for existing projects.

On iOS, transformed video exports such as merge, scale, rotate, flip, and crop preserve the source track frame rate when AVFoundation reports one. If the source frame rate is unavailable, the exporter falls back to 30 fps.

Add the following keys to your `Info.plist`:

```xml
<key>NSPhotoLibraryUsageDescription</key>
<string>This app requires access to the photo library for video editing.</string>
<key>NSPhotoLibraryAddUsageDescription</key>
<string>This app requires access to the photo library to save edited videos.</string>
```

## 🤝 Contributing

Contributions are always welcome! Here's how you can help:

1. 🐛 Report bugs by opening an issue
2. 💡 Suggest new features or improvements
3. 📝 Improve documentation
4. 🔧 Submit pull requests

## License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

## 📧 Author

[iawtk2302](https://github.com/iawtk2302)

## ⭐ Show Your Support

If you find this plugin helpful, please give it a star on [GitHub](https://github.com/iawtk2302/easy_video_editor)! It helps others discover the plugin and motivates me to keep improving it.

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