Simple Video Converter

A Flutter app for Android that converts and trims videos using FFmpegKit with software encoding (libx264) for superior text and screen recording quality.

Features

• Video selection from device storage
• Live preview with trim slider
• 8 quality presets (Original to 360p)
• Mute audio option
• Estimated file size display
• Share / save converted video

Tech Stack

• Framework: Flutter (Dart)
• Encoding: ffmpeg_kit_flutter_new — libx264 software encoder
• Video Preview: video_player
• File Picker: file_picker
• Saving: gal and file_picker

License

GPL-3.0 — see LICENSE.

This app uses FFmpegKit which includes x264 (GPL). As a result, this app is also GPL-licensed.

Building

Prerequisites

• Flutter SDK
• Android SDK (minSdk 24)

Setup

1. Clone the repo:

   git clone https://github.com/YOUR_USERNAME/simple_video_converter.git
   cd simple_video_converter

2. Install dependencies:

   flutter pub get

3. For release builds — create android/key.properties from the template:

   cp android/key.properties android/key.properties
   # Edit android/key.properties with your signing credentials

4. Run with the Android GMA Next-Gen SDK enabled:

   flutter run --dart-define=USE_NEXT_GEN_SDK=true

   Use the same declaration for builds, for example:

   flutter build apk --debug --dart-define=USE_NEXT_GEN_SDK=true

Note on Secrets

android/key.properties, google-services.json and signing keystores are excluded from the repository via .gitignore. These files contain credentials and must be set up locally.