The Ultimate Guide to Video Editing with Flutter

Video editing is a crucial aspect of modern app development, empowering users to create engaging and impactful video content. Flutter, a popular cross-platform UI framework, offers a robust solution for video editing through the video_editor package.

Installation and Usage

To integrate the video_editor package into your Flutter project, follow these steps:

flutter pub add video_editor

Import the package:

import 'package:video_editor/video_editor.dart';

API Overview

The video_editor package provides a comprehensive API for video editing operations:

Method	Description
initialize()	Initializes the video controller with video, trim, and cover parameters
rotate90Degrees()	Rotates the video 90 degrees in a specified direction
cropAspectRatio()	Updates the aspect ratio and centers the crop area
updateCrop()	Updates the crop area's minimum and maximum values
updateTrim()	Updates the trim area's minimum and maximum values
exportVideo()	Exports the video using FFmpeg
exportGif()	Exports the video as a GIF image

Customizing the Video Editor

Crop Style:

CropStyle(
  croppingBackground: Colors.black.withOpacity(0.48),
  background: Colors.black,
  gridSize: 3,
  selectedBoundariesColor: Colors.red,
);

Trim Style:

TrimStyle(
  background: Colors.black.withOpacity(0.6),
  positionLineColor: Colors.red,
  lineColor: Colors.white,
  onTrimmingColor: Colors.blue,
);

Cover Style:

CoverStyle(
  selectedBorderColor: Colors.white,
  borderWidth: 2,
  borderRadius: 5.0,
);

Exporting the Video

To export the edited video, you can use the following FFmpegVideoEditorConfig:

FFmpegVideoEditorConfig(
  format: VideoExportFormat.mp4,
  scale: 0.5, // Resizes the generated file to half the original size
  isFiltersEnabled: true, // Applies the editor parameters
);

To export the video as a GIF, use the following CoverFFmpegVideoEditorConfig:

CoverFFmpegVideoEditorConfig(
  format: CoverExportFormat.gif,
  quality: 100, // Sets the quality of the generated GIF
);

Example

The following code demonstrates basic usage of the video_editor package:

VideoEditorController _controller = VideoEditorController.file(File('/path/to/video.mp4'));
_controller.initialize().then((_) => setState(() {}));

Future exportVideo() async {
  final config = VideoFFmpegVideoEditorConfig(_controller);
  final FFmpegVideoEditorExecute execute = await config.getExecuteConfig();
  // Handle video exportation using ffmpeg_kit_flutter or your own video server
}

Conclusion

The video_editor package is a powerful and customizable solution for video editing in Flutter. It empowers developers to create user-friendly video editing experiences and export high-quality videos effortlessly. With its extensive API and customizable styles, the package provides the flexibility to cater to diverse editing requirements.