export_video_frame 0.0.2

A Flutter plugin for iOS and Android for exporting picture from video file.

Export Video frame for Flutter

A Flutter plugin for iOS and Android for exporting picture from video file.

Installation

add export_video_frame as a dependency in your pubspec.yaml file.

Usage

/// Returns the file list of the exporting image
///
/// - parameters:
///    - filePath: file path of video
///    - number: export the number of frames
static Future<List<File>> exportImage (String filePath,int number) async {
    final List<dynamic> list = await _channel.invokeMethod('exportImage',[filePath,"$number"]);
    var result = list.cast<String>().map( (path) => File.fromUri(Uri.file(path))).toList();
    return result;
}

/// Returns whether clean success
static Future<bool> cleanImageCache() async {
    final String result = await _channel.invokeMethod('cleanImageCache');
    if (result == "success") {
      return true;
    }
    return false;
}

/// Returns the file list of the exporting image
///
/// - parameters:
///    - file: file of video
///    - duration: export the duration of frames
static Future<File> exportImageBySeconds(File file, Duration duration) async {
  var milli = duration.inMilliseconds;
  final String path =
      await _channel.invokeMethod('exportImageBySeconds', [file.path, "$milli"]);
  try {
    var result = File.fromUri(Uri.file(path));
    return result;
  } catch (e) {
    throw e;
  }
}

/// Save image to album
///
/// - parameters:
///    - file: file of video
///    - albumName: save the album name
/// Returns whether save success
static Future<bool> saveImage(File file,String albumName) async {
  final bool result = await _channel.invokeMethod('saveImage',[file.path, albumName]);
  return result;
}

ios

If there will be an error when compile ios app.Because flutter use swift is 4.0. located in ios/Podfile Edit your Podfile as follows:

target 'Runner' do
  use_frameworks! # <--- add this
  ...
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['ENABLE_BITCODE'] = 'NO'
      config.build_settings['SWIFT_VERSION'] = '4.2' # <--- add this
    end
  end
end

If you use saveAblum api,you need add the add the following keys to your Info.plist file, located ios/Runner/Info.plist:

<key>NSPhotoLibraryUsageDescription</key>
<string>Use Ablum For your purpose</string>

Android

Make sure you add the needed permissions to your Android Manifest Permission.

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

Example Demo