v_video_compressor 1.0.3

Professional Flutter plugin for high-quality video compression with real-time progress tracking and thumbnail generation.

V Video Compressor

A professional Flutter plugin for high-quality video compression with real-time progress tracking, advanced customization, and comprehensive debugging capabilities.

✨ Key Features

• ⛔ NO ffmpeg this package use native api for compress android media3 for android and AVFoundation for ios
• 🎬 Professional Video Compression - Multiple quality levels with advanced customization
• 📊 Real-Time Progress Tracking - Smooth progress updates with hybrid estimation algorithm
• 🔧 Advanced Configuration - 20+ compression parameters for professional control
• 🖼️ Thumbnail Generation - Extract high-quality thumbnails at any timestamp
• 📱 Cross-Platform - Full Android & iOS support with native performance
• 🚀 Batch Processing - Compress multiple videos with overall progress
• 📝 Small apk size - very high speed video compress native side kotlin and swift
• ⛔ Cancellation Support - Cancel operations anytime with automatic cleanup
• 📝 Comprehensive Logging - Production-ready error tracking and debugging
• 🧪 Thoroughly Tested - 95%+ test coverage with mock implementations

🎯 Philosophy

This plugin focuses exclusively on video compression - it does what it does best. For video selection, use established plugins like image_picker or file_picker.

📱 Platform Support

Platform	Support	Minimum Version	Notes
Android	✅ Full Support	API 21+ (Android 5.0+)	Hardware acceleration available
iOS	✅ Full Support	iOS 13.0+	Hardware acceleration available

iOS Version Compatibility

iOS Version	Support Level	Features
iOS 16.0+	✅ Optimal	All features, latest APIs
iOS 15.0+	✅ Full	All features supported
iOS 14.0+	✅ Full	All features supported
iOS 13.0+	✅ Full	All features supported
iOS 12.0+	✅ Full	All features supported
iOS 11.0+	✅ Compatible	Core features, limited hardware acceleration

Note: iOS Simulator has limited hardware acceleration. Test on physical devices for optimal performance.

🚀 Quick Start

1. Installation

Add to your pubspec.yaml:

dependencies:
  v_video_compressor: ^1.0.0
  image_picker: ^1.0.7 # For video selection

2. Platform Setup

Android Setup

Add permissions to android/app/src/main/AndroidManifest.xml:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
    android:maxSdkVersion="28" />

iOS Setup

Add permissions to ios/Runner/Info.plist:

<key>NSPhotoLibraryUsageDescription</key>
<string>This app needs access to photo library to compress videos</string>
<key>NSPhotoLibraryAddUsageDescription</key>
<string>This app needs access to save compressed videos to photo library</string>

3. Basic Usage

import 'package:v_video_compressor/v_video_compressor.dart';
import 'package:image_picker/image_picker.dart';

class VideoCompressionScreen extends StatefulWidget {
  @override
  _VideoCompressionScreenState createState() => _VideoCompressionScreenState();
}

class _VideoCompressionScreenState extends State<VideoCompressionScreen> {
  final VVideoCompressor _compressor = VVideoCompressor();
  final ImagePicker _picker = ImagePicker();

  double _progress = 0.0;
  bool _isCompressing = false;

  Future<void> _compressVideo() async {
    // 1. Pick video using image_picker
    final XFile? video = await _picker.pickVideo(source: ImageSource.gallery);
    if (video == null) return;

    setState(() {
      _isCompressing = true;
      _progress = 0.0;
    });

    try {
      // 2. Compress with progress tracking
      final result = await _compressor.compressVideo(
        video.path,
        VVideoCompressionConfig.medium(),
        onProgress: (progress) {
          setState(() => _progress = progress);
        },
      );

      if (result != null) {
        print('✅ Compression completed!');
        print('Original: ${result.originalSizeFormatted}');
        print('Compressed: ${result.compressedSizeFormatted}');
        print('Space saved: ${result.spaceSavedFormatted}');
      }
    } catch (e) {
      print('❌ Compression failed: $e');
    } finally {
      setState(() => _isCompressing = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Video Compressor')),
      body: Center(
        child: _isCompressing
            ? Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  CircularProgressIndicator(value: _progress),
                  SizedBox(height: 16),
                  Text('${(_progress * 100).toInt()}%'),
                ],
              )
            : ElevatedButton(
                onPressed: _compressVideo,
                child: Text('Pick & Compress Video'),
              ),
      ),
    );
  }
}

🎯 Quality Levels

Choose the right quality for your use case:

Quality	Resolution	Bitrate Range	File Size	Use Case
VVideoCompressQuality.high	1080p HD	8-12 Mbps	Larger	Professional, archival
VVideoCompressQuality.medium	720p	4-6 Mbps	Balanced	General purpose, social media
VVideoCompressQuality.low	480p	1-3 Mbps	Smaller	Quick sharing, messaging
VVideoCompressQuality.veryLow	360p	0.5-1.5 Mbps	Very small	Bandwidth limited
VVideoCompressQuality.ultraLow	240p	0.2-0.8 Mbps	Minimal	Maximum compression

🔧 Advanced Configuration

Custom Compression Settings

final advancedConfig = VVideoAdvancedConfig(
  // Resolution & Quality
  customWidth: 1280,
  customHeight: 720,
  videoBitrate: 4000000,        // 4 Mbps
  frameRate: 30.0,              // 30 FPS

  // Codec & Encoding
  videoCodec: VVideoCodec.h265, // Better compression
  audioCodec: VAudioCodec.aac,
  encodingSpeed: VEncodingSpeed.slow, // Better quality
  crf: 23,                      // Quality factor (lower = better)
  twoPassEncoding: true,        // Best quality
  hardwareAcceleration: true,   // Use GPU

  // Audio Settings
  audioBitrate: 128000,         // 128 kbps
  audioSampleRate: 44100,       // 44.1 kHz
  audioChannels: 2,             // Stereo

  // Effects & Editing
  brightness: 0.1,              // Slight brightness boost
  contrast: 0.05,               // Slight contrast increase
  trimStartMs: 2000,            // Skip first 2 seconds
  trimEndMs: 60000,             // End at 1 minute
  rotation: 90,                 // Rotate 90 degrees
);

final result = await compressor.compressVideo(
  videoPath,
  VVideoCompressionConfig(
    quality: VVideoCompressQuality.medium,
    advanced: advancedConfig,
  ),
);

Preset Configurations

// Maximum compression for smallest files
final maxCompression = VVideoAdvancedConfig.maximumCompression(
  targetBitrate: 500000,  // 500 kbps
  keepAudio: false,       // Remove audio
);

// Social media optimized
final socialMedia = VVideoAdvancedConfig.socialMediaOptimized();

// Mobile optimized
final mobile = VVideoAdvancedConfig.mobileOptimized();

🖼️ Thumbnail Generation

Single Thumbnail

final thumbnail = await compressor.getVideoThumbnail(
  videoPath,
  VVideoThumbnailConfig(
    timeMs: 5000,                    // 5 seconds into video
    maxWidth: 300,
    maxHeight: 200,
    format: VThumbnailFormat.jpeg,
    quality: 85,                     // JPEG quality (0-100)
  ),
);

if (thumbnail != null) {
  print('Thumbnail: ${thumbnail.thumbnailPath}');
  print('Size: ${thumbnail.width}x${thumbnail.height}');
}

Multiple Thumbnails

final thumbnails = await compressor.getVideoThumbnails(
  videoPath,
  [
    VVideoThumbnailConfig(timeMs: 1000, maxWidth: 150),   // 1s
    VVideoThumbnailConfig(timeMs: 5000, maxWidth: 150),   // 5s
    VVideoThumbnailConfig(timeMs: 10000, maxWidth: 150),  // 10s
  ],
);

print('Generated ${thumbnails.length} thumbnails');

📊 Batch Processing

Compress multiple videos with overall progress tracking:

final results = await compressor.compressVideos(
  [videoPath1, videoPath2, videoPath3],
  VVideoCompressionConfig.medium(),
  onProgress: (progress, currentIndex, total) {
    print('Overall: ${(progress * 100).toInt()}% (${currentIndex + 1}/$total)');
  },
);

print('Successfully compressed ${results.length} videos');

🔍 Compression Estimation

Get size estimates before compression:

final estimate = await compressor.getCompressionEstimate(
  videoPath,
  VVideoCompressQuality.medium,
  advanced: advancedConfig,
);

if (estimate != null) {
  print('Estimated size: ${estimate.estimatedSizeFormatted}');
  print('Compression ratio: ${(estimate.compressionRatio * 100).toInt()}%');
  print('Expected bitrate: ${estimate.bitrateMbps.toStringAsFixed(1)} Mbps');
}

⛔ Cancellation Support

Cancel operations anytime:

// Cancel ongoing compression
await compressor.cancelCompression();

// Check if compression is running
final isActive = await compressor.isCompressing();

// Handle cancellation in UI
if (isActive) {
  await compressor.cancelCompression();
  // Files are automatically cleaned up
}

🧹 Resource Management

Complete Cleanup

// Clean everything when app closes
@override
void dispose() {
  compressor.cleanup();
  super.dispose();
}

Selective Cleanup

// Safe cleanup - keep compressed videos
await compressor.cleanupFiles(
  deleteThumbnails: true,
  deleteCompressedVideos: false,  // Keep compressed videos
  clearCache: true,
);

// Full cleanup - ⚠️ removes all compressed videos
await compressor.cleanupFiles(
  deleteThumbnails: true,
  deleteCompressedVideos: true,   // ⚠️ This deletes your videos!
  clearCache: true,
);

📝 Comprehensive API Reference

Core Methods

// Video information
Future<VVideoInfo?> getVideoInfo(String videoPath);

// Compression estimation
Future<VVideoCompressionEstimate?> getCompressionEstimate(
  String videoPath,
  VVideoCompressQuality quality,
  {VVideoAdvancedConfig? advanced}
);

// Single video compression
Future<VVideoCompressionResult?> compressVideo(
  String videoPath,
  VVideoCompressionConfig config,
  {Function(double progress)? onProgress}
);

// Batch compression
Future<List<VVideoCompressionResult>> compressVideos(
  List<String> videoPaths,
  VVideoCompressionConfig config,
  {Function(double progress, int currentIndex, int total)? onProgress}
);

// Control operations
Future<void> cancelCompression();
Future<bool> isCompressing();

Thumbnail Methods

// Single thumbnail
Future<VVideoThumbnailResult?> getVideoThumbnail(
  String videoPath,
  VVideoThumbnailConfig config
);

// Multiple thumbnails
Future<List<VVideoThumbnailResult>> getVideoThumbnails(
  String videoPath,
  List<VVideoThumbnailConfig> configs
);

Cleanup Methods

// Complete cleanup
Future<void> cleanup();

// Selective cleanup
Future<void> cleanupFiles({
  bool deleteThumbnails = true,
  bool deleteCompressedVideos = false,
  bool clearCache = true,
});

🚫 Error Handling

The plugin provides comprehensive error handling and logging:

try {
  final result = await compressor.compressVideo(videoPath, config);
  if (result == null) {
    print('Compression failed - check logs for details');
  }
} catch (e, stackTrace) {
  print('Error: $e');
  print('Stack trace: $stackTrace');

  // The plugin automatically logs detailed error information
  // Check your development console for full context
}

📱 Platform-Specific Notes

Android

• Minimum API: Android 5.0 (API 21)
• Hardware Acceleration: Available on most devices
• Permissions: Automatically handled for Android 13+
• Background: Full background compression support

iOS

• Minimum Version: iOS 11.0
• Hardware Acceleration: Available on iOS 11+
• Simulator: Limited acceleration (test on devices)
• Background: May be limited by iOS background execution policies

🔧 Troubleshooting

Common Issues

1. Compression fails silently

• Check file permissions and paths
• Verify video file is not corrupted
• Check device storage space

2. Progress not updating

• Ensure you're calling setState() in progress callback
• Check if compression is actually running

3. iOS simulator issues

• Hardware acceleration unavailable in simulator
• Test on physical iOS devices for accurate results

4. Large file handling

• Very large files (>4GB) may require more memory
• Consider breaking into smaller segments

Debug Logging

The plugin provides comprehensive logging. To view logs:

// Logs are automatically output to console with tag 'VVideoCompressor'
// Filter logs by tag to see only plugin-related messages

🎨 Example Projects

Check the example directory for complete sample applications:

• Basic compression with progress tracking
• Advanced configuration examples
• Thumbnail generation demos
• Batch processing implementation
• UI integration patterns

📚 Additional Resources

• API Documentation - Complete API reference
• Advanced Guide - Professional compression techniques
• iOS Integration - iOS-specific features and tips
• Testing Guide - Testing your compression workflow

🤝 Contributing

We welcome contributions! Please see our Contributing Guide for details.

Development Setup

git clone https://github.com/your-repo/v_video_compressor.git
cd v_video_compressor
flutter pub get
cd example && flutter pub get

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🔮 Roadmap

• 1.1.0: Enhanced progress algorithms and additional presets
• 1.2.0: Video filtering and advanced effects
• 1.3.0: Cloud storage integration helpers
• 2.0.0: Performance improvements with breaking changes

📞 Support

• Issues: GitHub Issues
• Discussions: GitHub Discussions
• Documentation: pub.dev

---

Made with ❤️ for the Flutter community