Sunday, March 26, 2023

flutter video compress with thumbnail Generation

Generate a new path by compressed video, Choose to keep the source video or delete it by a parameter. Get video thumbnail from a video path and provide video information. Easy to deal with compressed video. Considering reduce application size is not using FFmpeg in IOS.

flutter compress video


Installing add flutter_video_compress as a dependency in your pubspec.yaml file.

  flutter_video_compress: ^0.3.x

Create an instance

final _flutterVideoCompress = FlutterVideoCompress();

Get thumbnail from video path

final uint8list = await _flutterVideoCompress.getThumbnail(
  quality: 50, // default(100)
  position: -1 // default(-1)

Get thumbnail file from video path

final thumbnailFile = await _flutterVideoCompress.getThumbnailWithFile(
  quality: 50, // default(100)
  position: -1 // default(-1)

Convert video to a gif

final file = await _flutterVideoCompress.convertVideoToGif(
  startTime: 0, // default(0)
  duration: 5, // default(-1)
  // endTime: -1 // default(-1)

Get media information

only support video now.

final info = await _flutterVideoCompress.getMediaInfo(file.path);

Compression Video

Compatible with IOS, Android and Web after compression.

final info = await _flutterVideoCompress.compressVideo(
  quality: VideoQuality.DefaultQuality, // default(VideoQuality.DefaultQuality)
  deleteOrigin: false, // default(false)

Check Compressing state


Stop compression

Will print InterruptedException in android, but not affect to use.

await _flutterVideoCompress.cancelCompression()

delete all cache files

Delete all files generated by this will delete all files located at ‘flutter_video_compress’, you shoule ought to know what are you doing.

await _flutterVideoCompress.deleteAllCache()

Subscribe the compression progress steam

class ... extends State<MyApp> {
  Subscription _subscription;

  void initState() {
    _subscription =
        _flutterVideoCompress.compressProgress$.subscribe((progress) {
      debugPrint('progress: $progress');

  void dispose() {


getThumbnailString path, int quality(1-100)[thumbnail quality], int position[Get a thumbnail from video position]get thumbnail from video pathFuture<Uint8List>
getThumbnailWithFileString path, int quality(1-100)[thumbnail quality], int position[Get a thumbnail from video position]get thumbnail file from video pathFuture<File>
convertVideoToGifString path, int startTime(from 0 start)[convert video to gif start time], int endTime[convert video to gif end time], int duration[convert video to gif duration from start time]convert video to gif from video pathFuture<File>
getMediaInfoString pathget media information from video pathFuture<MediaInfo>
compressVideoString path, VideoQuality quality[compressed video quality], bool deleteOrigin[delete the origin video], int startTime[compression video start time], int duration[compression video duration from start time], bool includeAudio[is include audio in compressed video], int frameRate[compressed video frame rate]compression video at origin video pathFuture<MediaInfo>
cancelCompressionnonecancel compressingFuture<void>
deleteAllCachenoneDelete all files generated by ‘flutter_video_compress’ will delete all files located at ‘flutter_video_compress’Future<bool>


compressProgress$Subscribe the compression progress steamdouble progress


If your application is significantly larger after using the plugin, you can reduce the application size in the following way:

  • exclude x86 related files (./assets)
  • This library not use ffprobe, only used ffmpeg, but the application still has ffprobe, so you will need to exclude (asssets/arm or assets/x86)

add this config in build.gradle:

  • Don’t use ignoreAssetsPattern "!x86" in debug mode, will crash on the simulator
android {
 // Reduce your application size with this configuration
 aaptOptions {
     ignoreAssetsPattern "!x86:!*ffprobe"
 buildTypes {

look detail


If your application is not enabled AndroidX, you will need to add the following code to the last line of the android/build.gradle file.

rootProject.allprojects {
    subprojects {
        project.configurations.all {
            resolutionStrategy.eachDependency { details ->
                if ( == 'androidx.core' && !'androidx')) {
                    details.useVersion "1.0.1"

If your application not support swift, you need to add the following code in ios/Podfile.

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

look detail

If your application never used a swift plugin before, maybe you would meet the error, you need to add the following code in ios/Podfile.

The ‘Pods-Runner’ target has transitive dependencies that include static binaries

pre_install do |installer|
  # workaround for
  Pod::Installer::Xcode::TargetValidator.send(:define_method, :verify_no_static_framework_transitive_dependencies) {}

If the above method not work, you report bug of the error repository. The reason is「can’t support swift」

look detail

if show error of Regift

  • Regift does not specify a Swift version and none of the targets (Runner) integrating it have the SWIFT_VERSION attribute set. Please contact the author or set the SWIFT_VERSION attribute in at least one of the targets that integrate this pod.
pre_install do |installer|
  installer.analysis_result.specifications.each do |s|
      if == 'Regift'
        s.swift_version = '4.0'

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['ENABLE_BITCODE'] = 'NO'