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Description:

media kit

package:media_kit #
A cross-platform video player & audio player for Flutter & Dart.

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Installation #
package:media_kit is split into multiple packages to improve modularity & reduce bundle size.
For apps that need video playback:
dependencies:
media_kit: ^1.1.11 # Primary package.
media_kit_video: ^1.2.5 # For video rendering.
media_kit_libs_video: ^1.0.5 # Native video dependencies.
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For apps that need audio playback:
dependencies:
media_kit: ^1.1.11 # Primary package.
media_kit_libs_audio: ^1.0.5 # Native audio dependencies.
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Notes:

The video libraries should be selected if both video & audio support is needed.
The media_kit_libs_video & media_kit_libs_audio packages should not be mixed.
The performance in "Release" mode is substantially higher than in "Debug" mode.
Enable --split-per-abi or use app bundle (instead of APK) on Android.

Platforms #

Platform
Video
Audio
Notes
Demo

Android
✅
✅
Android 5.0 or above.
Download

iOS
✅
✅
iOS 9 or above.
Download

macOS
✅
✅
macOS 10.9 or above.
Download

Windows
✅
✅
Windows 7 or above.
Download

GNU/Linux
✅
✅
Any modern GNU/Linux distribution.
Download

Web
✅
✅
Any modern web browser.
Visit

Android

iOS

macOS

Windows

GNU/Linux

Web

✅ Video playback
✅ Audio playback
✅ Cross platform
✅ Wide format/codec support
✅ Hardware/GPU acceleration
✅ Playlist support with next/previous/jump/shuffle
✅ Volume/Rate/Pitch change
✅ Video/Audio/Subtitle track selection
✅ External audio/subtitle track selection
✅ HTTP headers
✅ Video controls
✅ Subtitle styling
✅ Screenshot

TL;DR #
A quick usage example.
// Make sure to add following packages to pubspec.yaml:
// * media_kit
// * media_kit_video
// * media_kit_libs_video
import 'package:flutter/material.dart';

import 'package:media_kit/media_kit.dart'; // Provides [Player], [Media], [Playlist] etc.
import 'package:media_kit_video/media_kit_video.dart'; // Provides [VideoController] & [Video] etc.

void main() {
WidgetsFlutterBinding.ensureInitialized();
// Necessary initialization for package:media_kit.
MediaKit.ensureInitialized();
runApp(
const MaterialApp(
home: MyScreen(),
),
);
}

class MyScreen extends StatefulWidget {
const MyScreen({Key? key}) : super(key: key);
@override
State<MyScreen> createState() => MyScreenState();
}

class MyScreenState extends State<MyScreen> {
// Create a [Player] to control playback.
late final player = Player();
// Create a [VideoController] to handle video output from [Player].
late final controller = VideoController(player);

@override
void initState() {
super.initState();
// Play a [Media] or [Playlist].
player.open(Media('https://user-images.githubusercontent.com/28951144/229373695-22f88f13-d18f-4288-9bf1-c3e078d83722.mp4'));
}

@override
void dispose() {
player.dispose();
super.dispose();
}

@override
Widget build(BuildContext context) {
return Center(
child: SizedBox(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.width * 9.0 / 16.0,
// Use [Video] widget to display video output.
child: Video(controller: controller),
),
);
}
}
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Note: You may need to add required permissions to your project.
Guide #
A usage guide for package:media_kit.
Tip: Use Ctrl + F to quickly search for things.
Contents #

Initialization
Create a Player
Dispose a Player
Open a Media or Playlist
Play, pause or play/pause
Seek
Loop or repeat
Set volume, rate or pitch
Handle playback events
Shuffle the queue
Use HTTP headers
Use extras to store additional data with Media
Go to next, previous or any other position in queue
Modify Player's queue
Select video, audio or subtitle track
Select audio device
Display the video
Capture screenshot
Customize subtitles
Load external subtitle track
Load external audio track
Video controls
Next steps

Initialization #
MediaKit.ensureInitialized must be called before using the package:
void main() {
WidgetsFlutterBinding.ensureInitialized();
// Make sure to add the required packages to pubspec.yaml:
// * https://github.com/media-kit/media-kit#installation
// * https://pub.dev/packages/media_kit#installation
MediaKit.ensureInitialized();
runApp(const MyApp());
}
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The method also has some optional arguments to customize the global behavior. To handle any initialization errors, this may be surrounded by try/catch.
Create a Player #
A Player instance is used to start & control the playback of a media source e.g. URL or file.
final Player player = Player();
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Additional options may be provided using the configuration argument in the constructor. In general situations, you will never require this.
final Player player = Player(
configuration: PlayerConfiguration(
// Supply your options:
title: 'My awesome package:media_kit application',
ready: () {
print('The initialization is complete.');
},
),
);
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Dispose a Player #
It is extremely important to release the allocated resources back to the system:
await player.dispose();
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Open a Media or Playlist #
A Playable can either be a Media or a Playlist.

Media: Single playback source (file or URL).
Playlist: Queue of playback sources (file or URL).

Use the Player.open method to load & start playback.
Media
final playable = Media('https://user-images.githubusercontent.com/28951144/229373695-22f88f13-d18f-4288-9bf1-c3e078d83722.mp4');
await player.open(playable);
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Playlist
final playable = Playlist(
[
Media('https://user-images.githubusercontent.com/28951144/229373695-22f88f13-d18f-4288-9bf1-c3e078d83722.mp4'),
Media('https://user-images.githubusercontent.com/28951144/229373709-603a7a89-2105-4e1b-a5a5-a6c3567c9a59.mp4'),
Media('https://user-images.githubusercontent.com/28951144/229373716-76da0a4e-225a-44e4-9ee7-3e9006dbc3e3.mp4'),
Media('https://user-images.githubusercontent.com/28951144/229373718-86ce5e1d-d195-45d5-baa6-ef94041d0b90.mp4'),
Media('https://user-images.githubusercontent.com/28951144/229373720-14d69157-1a56-4a78-a2f4-d7a134d7c3e9.mp4'),
],
);
await player.open(playable);
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Notes:

By default, this will automatically start playing the playable. This may be disabled as follows:

await player.open(
playable,
play: false,
);
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By default, the playlist will start at the index 0. This may be changed as follows:

final playable = Playlist(
[
Media('https://user-images.githubusercontent.com/28951144/229373695-22f88f13-d18f-4288-9bf1-c3e078d83722.mp4'),
Media('https://user-images.githubusercontent.com/28951144/229373709-603a7a89-2105-4e1b-a5a5-a6c3567c9a59.mp4'),
Media('https://user-images.githubusercontent.com/28951144/229373716-76da0a4e-225a-44e4-9ee7-3e9006dbc3e3.mp4'),
Media('https://user-images.githubusercontent.com/28951144/229373718-86ce5e1d-d195-45d5-baa6-ef94041d0b90.mp4'),
Media('https://user-images.githubusercontent.com/28951144/229373720-14d69157-1a56-4a78-a2f4-d7a134d7c3e9.mp4'),
],
// Declare the starting position.
index: 0,
);
await player.open(playable);
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Play, pause or play/pause #
The 3 methods are:
await player.play();
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await player.pause();
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await player.playOrPause();
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Stop #
The stop method may be used to stop the playback of currently opened Media or Playlist.
await player.stop();
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It does not release allocated resources back to the system (unlike dispose) & Player still stays usable.
Seek #
Supply the final position to Player.seek method as Duration:
await player.seek(
const Duration(
minutes: 6,
seconds: 9,
),
);
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Loop or repeat #
Three PlaylistModes are available:

PlaylistMode.none: End playback once end of the playlist is reached.
PlaylistMode.single: Indefinitely loop over the currently playing file in the playlist.
PlaylistMode.loop: Loop over the playlist & restart it from beginning once end is reached.

await player.setPlaylistMode(PlaylistMode.single);
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Set volume, rate or pitch #
Set the volume
This controls the loudness of audio output. The maximum volume is 100.0.
await player.setVolume(50.0);
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Set the rate
This controls the playback speed.
await player.setRate(1.5);
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Set the pitch
This controls the pitch of the audio output.
await player.setPitch(1.2);
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Note: This requires pitch argument to be true in PlayerConfiguration.
Handle playback events #
You can access or subscribe to Player's state changes.
Event handling is an extremely important part of media playback. It is used to show changes in the UI, handle errors, detect the occurrence of play/pause, end-of-file, position updates etc.

Player.stream.*: Provides access to Player's state as Stream(s).
Player.state.*: Provides access to Player's state directly (for instantaneous access).

A typical example will be:
player.stream.playing.listen(
(bool playing) {
if (playing) {
// Playing.
} else {
// Paused.
}
},
);
player.stream.position.listen(
(Duration position) {
setState(() {
// Update UI.
});
},
);
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The following state(s) are available as events:

Type
Name
Description

Stream<Playlist>
playlist
Currently opened media sources.

Stream<bool>
playing
Whether playing or not.

Stream<bool>
completed
Whether end of currently playing media source has been reached.

Stream<Duration>
position
Current playback position.

Stream<Duration>
duration
Current playback duration.

Stream<double>
volume
Current volume.

Stream<double>
rate
Current playback rate.

Stream<double>
pitch
Current pitch.

Stream<bool>
buffering
Whether buffering or not.

Stream<Duration>
buffer
Current buffer position. This indicates how much of the stream has been decoded & cached by the demuxer.

Stream<PlaylistMode>
playlistMode
Current playlist mode.

Stream<AudioParams>
audioParams
Audio parameters of the currently playing media source e.g. sample rate, channels, etc.

Stream<VideoParams>
videoParams
Video parameters of the currently playing media source e.g. width, height, rotation etc.

Stream<double?>
audioBitrate
Audio bitrate of the currently playing media source.

Stream<AudioDevice>
audioDevice
Currently selected audio device.

Stream<List<AudioDevice>>
audioDevices
Currently available audio devices.

Stream<Track>
track
Currently selected video, audio and subtitle track.

Stream<Tracks>
tracks
Currently available video, audio and subtitle tracks.

Stream<int>
width
Currently playing video's width.

Stream<int>
height
Currently playing video's height.

Stream<int>
subtitle
Currently displayed subtitle.

Stream<PlayerLog>
log
Internal logs.

Stream<String>
error
Error messages. This may be used to handle & display errors to the user.

Shuffle the queue #
You may find the requirement to shuffle the Playlist you open'd in Player, like some music players do.
await player.setShuffle(true);
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Note: This option is reset upon the next Player.open call.
Use HTTP headers #
Declare the httpHeaders argument in Media constructor. It takes the HTTP headers as Map<String, String>.
final playable = Media(
'https://user-images.githubusercontent.com/28951144/229373695-22f88f13-d18f-4288-9bf1-c3e078d83722.mp4',
httpHeaders: {
'Foo': 'Bar',
'Accept': '*/*',
'Range': 'bytes=0-',
},
);
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Use extras to store additional data with Media #
The extras argument may be utilized to store additional data with a Media in form of Map<String, dynamic>.
final playable = Media(
'https://user-images.githubusercontent.com/28951144/229373695-22f88f13-d18f-4288-9bf1-c3e078d83722.mp4',
extras: {
'track': '9',
'year': '2012',
'title': 'Courtesy Call',
'artist': 'Thousand Foot Krutch',
'album': 'The End Is Where We Begin',
},
);
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Modify Player's queue #
You can add or remove (etc.) a Media in an already playing Playlist:
Add
Add a new Media to the back of the queue:
await player.add(Media('https://user-images.githubusercontent.com/28951144/229373695-22f88f13-d18f-4288-9bf1-c3e078d83722.mp4'));
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Remove
Remove any item from the queue:
await player.remove(0);
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Move
Move any item in the queue from one position to another:
await player.move(6, 9);
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Go to next, previous or any other position in queue #
Skip to the next queue item
await player.next();
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Skip to the previous queue item
await player.previous();
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Skip to any other queue item
await player.jump(5);
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Select video, audio or subtitle track #
A media source may contain multiple video, audio or subtitle tracks e.g. for multiple languages. Available video, audio or subtitle tracks are notified through Player's state. See "Handle playback events" section for related information.
By default, video, audio & subtitle track is selected automatically i.e. VideoTrack.auto(), AudioTrack.auto() & SubtitleTrack.auto().
Automatic selection
await player.setVideoTrack(VideoTrack.auto());

await player.setAudioTrack(AudioTrack.auto());

await player.setSubtitleTrack(SubtitleTrack.auto());
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Disable track
This may be used to essentially disable video output, disable audio output or stop rendering of subtitles etc.
await player.setVideoTrack(VideoTrack.no());

await player.setAudioTrack(AudioTrack.no());

await player.setSubtitleTrack(SubtitleTrack.no());
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Select custom track

Retrieve currently available tracks:

List<VideoTrack> videos = player.state.tracks.video;
List<AudioTrack> audios = player.state.tracks.audio;
List<SubtitleTrack> subtitles = player.state.tracks.subtitle;

// Get notified as [Stream]:
player.stream.tracks.listen((event) {
List<VideoTrack> videos = event.video;
List<AudioTrack> audios = event.audio;
List<SubtitleTrack> subtitles = event.subtitle;
});
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Select the track:

await player.setVideoTrack(videos[0]);
await player.setAudioTrack(audios[1]);
await player.setSubtitleTrack(subtitles[2]);
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Get notified about currently selected track:

VideoTrack video = player.state.track.video;
AudioTrack audio = player.state.track.audio;
SubtitleTrack subtitle = player.state.track.subtitle;

// Get notified as [Stream]:
player.stream.track.listen((event) {
VideoTrack video = event.video;
AudioTrack audio = event.audio;
SubtitleTrack subtitle = event.subtitle;
});
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Select audio device #
Available audio devices are notified through Player's state. See "Handle playback events" section for related information.
By default, audio device is selected automatically i.e. AudioDevice.auto().
Default selection
await player.setAudioDevice(AudioDevice.auto());
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Disable audio output
await player.setAudioDevice(AudioDevice.no());
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Select custom audio device

Retrieve currently available audio devices:

List<AudioDevice> devices = player.state.audioDevices;

// Get notified as [Stream]:
player.stream.audioDevices.listen((event) {
List<AudioDevice> devices = event;
});
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Select the audio device:

await player.setAudioDevice(devices[1]);
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Get notified about currently selected audio device:

AudioDevice device = player.state.audioDevice;

// Get notified as [Stream]:
player.stream.audioDevice.listen((event) {
AudioDevice device = event;
});
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Display the video #
The existing "TL;DR example" should provide you better idea.
For displaying the video inside Flutter UI, you must:

Create VideoController

Pass the Player you already have.

Create Video widget

Pass the VideoController you already have.

The code is easier to understand:
class _MyScreenState extends State<MyScreen> {
late final Player player = Player();
late final VideoController controller = VideoController(player);

@override
void dispose() {
player.dispose();
super.dispose();
}

@override
Widget build(BuildContext context) {
return Scaffold(
body: Video(
controller: controller,
),
);
}
}
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The video playback uses hardware acceleration i.e. GPU by default.
Additional options may be provided using the configuration argument in the constructor. In general situations, you will never require this.
final VideoController player = VideoController(
player,
configuration: const VideoControllerConfiguration(
// Supply your options:
enableHardwareAcceleration: true, // default: true
width: 640, // default: null
height: 480, // default: null
// The in-code comments is best place to know more about these options:
// https://github.com/media-kit/media-kit/blob/main/media_kit_video/lib/src/video_controller/video_controller.dart
),
);
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Capture screenshot #
The screenshot method takes the snapshot of the current video frame & returns encoded image bytes as Uint8List.
final Uint8List? screenshot = await player.screenshot();
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Additionally format argument may be specified to change the encoding format. Following formats are supported:

image/jpeg: Returns a JPEG encoded image.
image/png: Returns a PNG encoded image.
null: Returns BGRA pixel buffer.

Customize subtitles #
SubtitleViewConfiguration can be passed to the Video widget for customizing the subtitles. The code is easier to understand:
Notably, TextStyle, TextAlign & EdgeInsetsGeometry can be provided.
Video(
controller: controller,
subtitleViewConfiguration: const SubtitleViewConfiguration(
style: TextStyle(
height: 1.4,
fontSize: 24.0,
letterSpacing: 0.0,
wordSpacing: 0.0,
color: Color(0xffffffff),
fontWeight: FontWeight.normal,
backgroundColor: Color(0xaa000000),
),
textAlign: TextAlign.center,
padding: EdgeInsets.all(24.0),
),
);
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https://user-images.githubusercontent.com/28951144/253067794-73b5ca5d-e90d-4892-bc09-2a80f05c9f0b.mp4
Load external subtitle track #
The SubtitleTrack.uri constructor can be used to load external subtitle track with URI e.g. SRT, WebVTT etc. The code is easier to understand:
await player.setSubtitleTrack(
SubtitleTrack.uri(
'https://www.iandevlin.com/html5test/webvtt/upc-video-subtitles-en.vtt',
title: 'English',
language: 'en',
),
);
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The SubtitleTrack.data constructor can be used to load external subtitle track with data e.g. SRT, WebVTT etc. The code is easier to understand:
player.setSubtitleTrack(
SubtitleTrack.data(
'''WEBVTT FILE

1
00:00:03.500 --> 00:00:05.000 D:vertical A:start
Everyone wants the most from life

2
00:00:06.000 --> 00:00:09.000 A:start
Like internet experiences that are rich <b>and</b> entertaining

3
00:00:11.000 --> 00:00:14.000 A:end
Phone conversations where people truly <c.highlight>connect</c>

4
00:00:14.500 --> 00:00:18.000
Your favourite TV programmes ready to watch at the touch of a button

5
00:00:19.000 --> 00:00:24.000
Which is why we are bringing TV, internet and phone together in <c.highlight>one</c> super package

6
00:00:24.500 --> 00:00:26.000
<c.highlight>One</c> simple way to get everything

7
00:00:26.500 --> 00:00:27.500 L:12%
UPC

8
00:00:28.000 --> 00:00:30.000 L:75%
Simply for <u>everyone</u>
''',
title: 'English',
language: 'en',
),
);
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Load external audio track #
The AudioTrack.uri constructor can be used to load external audio track with URI. The code is easier to understand:
await player.setAudioTrack(
AudioTrack.uri(
'https://www.iandevlin.com/html5test/webvtt/v/upc-tobymanley.mp4',
title: 'English',
language: 'en',
),
);
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Video controls #
package:media_kit provides highly-customizable pre-built video controls for usage.
Apart from theming, layout can be customized, position of buttons can be modified, custom buttons can be created etc. Necessary features like fullscreen, keyboard shortcuts & swipe-based controls are also supported by default.

MaterialDesktopVideoControls

MaterialVideoControls

Video widget provides controls argument to display & customize video controls.
By default, AdaptiveVideoControls are used.

Types

Type
Description

AdaptiveVideoControls
Selects MaterialVideoControls, CupertinoVideoControls etc. based on platform.

MaterialVideoControls
Material Design video controls.

MaterialDesktopVideoControls
Material Design video controls for desktop.

CupertinoVideoControls
iOS-style video controls.

NoVideoControls
Disable video controls i.e. only render video output.

Custom
Provide custom builder for video controls.

Select existing video controls
Modify the controls argument. For advanced theming of existing video controls, see theming & modifying video controls section.
Scaffold(
body: Video(
controller: controller,
// Select [MaterialVideoControls].
controls: MaterialVideoControls,
),
);
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Scaffold(
body: Video(
controller: controller,
// Select [CupertinoVideoControls].
controls: CupertinoVideoControls,
),
);
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Build custom video controls
Pass custom builder Widget Function(BuildContext, VideoController) as controls argument.
Scaffold(
body: Video(
controller: controller,
// Provide custom builder for controls.
controls: (state) {
return Center(
child: IconButton(
onPressed: () {
state.widget.controller.player.playOrPause();
},
icon: StreamBuilder(
stream: state.widget.controller.player.stream.playing,
builder: (context, playing) => Icon(
playing.data == true ? Icons.pause : Icons.play_arrow,
),
),
// It's not necessary to use [StreamBuilder] or to use [Player] & [VideoController] from [state].
// [StreamSubscription]s can be made inside [initState] of this widget.
),
);
},
),
);
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Use & modify video controls
AdaptiveVideoControls

Selects MaterialVideoControls, CupertinoVideoControls etc. based on platform.
Theming:

Theme the specific controls according to sections below.

MaterialVideoControls

Material Design video controls.
Theming:

Use MaterialVideoControlsTheme widget.
Video widget(s) in the child tree will follow the specified theme:

// Wrap [Video] widget with [MaterialVideoControlsTheme].
MaterialVideoControlsTheme(
normal: MaterialVideoControlsThemeData(
// Modify theme options:
buttonBarButtonSize: 24.0,
buttonBarButtonColor: Colors.white,
// Modify top button bar:
topButtonBar: [
const Spacer(),
MaterialDesktopCustomButton(
onPressed: () {
debugPrint('Custom "Settings" button pressed.');
},
icon: const Icon(Icons.settings),
),
],
),
fullscreen: const MaterialVideoControlsThemeData(
// Modify theme options:
displaySeekBar: false,
automaticallyImplySkipNextButton: false,
automaticallyImplySkipPreviousButton: false,
),
child: Scaffold(
body: Video(
controller: controller,
),
),
);
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Related widgets (may be used in primaryButtonBar, topButtonBar & bottomButtonBar):

MaterialPlayOrPauseButton
MaterialSkipNextButton
MaterialSkipPreviousButton
MaterialFullscreenButton
MaterialCustomButton
MaterialPositionIndicator

MaterialDesktopVideoControls

Material Design video controls for desktop.
Theming:

Use MaterialDesktopVideoControlsTheme widget.
Video widget(s) in the child tree will follow the specified theme:

// Wrap [Video] widget with [MaterialDesktopVideoControlsTheme].
MaterialDesktopVideoControlsTheme(
normal: MaterialDesktopVideoControlsThemeData(
// Modify theme options:
seekBarThumbColor: Colors.blue,
seekBarPositionColor: Colors.blue,
toggleFullscreenOnDoublePress: false,
// Modify top button bar:
topButtonBar: [
const Spacer(),
MaterialDesktopCustomButton(
onPressed: () {
debugPrint('Custom "Settings" button pressed.');
},
icon: const Icon(Icons.settings),
),
],
// Modify bottom button bar:
bottomButtonBar: const [
Spacer(),
MaterialDesktopPlayOrPauseButton(),
Spacer(),
],
),
fullscreen: const MaterialDesktopVideoControlsThemeData(),
child: Scaffold(
body: Video(
controller: controller,
),
),
);
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Related widgets (may be used in primaryButtonBar, topButtonBar & bottomButtonBar):

MaterialDesktopPlayOrPauseButton
MaterialDesktopSkipNextButton
MaterialDesktopSkipPreviousButton
MaterialDesktopFullscreenButton
MaterialDesktopCustomButton
MaterialDesktopVolumeButton
MaterialDesktopPositionIndicator

Keyboard shortcuts may be modified using keyboardShortcuts argument. Default ones are listed below:

Shortcut
Action

Media Play Button
Play

Media Pause Button
Pause

Media Play/Pause Button
Play/Pause

Media Next Track Button
Skip Next

Media Previous Track Button
Skip Previous

Space
Play/Pause

J
Seek 10s Behind

I
Seek 10s Ahead

Arrow Left
Seek 2s Behind

Arrow Right
Seek 2s Ahead

Arrow Up
Increase Volume 5%

Arrow Down
Decrease Volume 5%

F
Enter/Exit Fullscreen

Escape
Exit Fullscreen

CupertinoVideoControls

iOS-style video controls.
Theming:

Use CupertinoVideoControlsTheme widget.
Video widget(s) in the child tree will follow the specified theme:

// Wrap [Video] widget with [CupertinoVideoControlsTheme].
CupertinoVideoControlsTheme(
normal: const CupertinoVideoControlsThemeData(
// W.I.P.
),
fullscreen: const CupertinoVideoControlsThemeData(
// W.I.P.
),
child: Scaffold(
body: Video(
controller: controller,
),
),
);
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NoVideoControls

Disable video controls i.e. only render video output.
Theming:

No theming applicable.

Next steps #
This guide follows a tutorial-like structure & covers nearly all features that package:media_kit offers. However, it is not complete by any means. You are free to improve this page & add more documentation, which newcomers may find helpful. The following places can help you learn more:

API reference can be helpful for diving into deeper specifics.
source-code of the demo application offers some complete code samples.
In-code comments & docstrings happen to be the most updated source of knowledge.

Goals #
package:media_kit is a library for Flutter & Dart which provides video & audio playback.

Strong: Supports most video & audio codecs.
Performant:

Handles multiple FHD videos flawlessly.
Rendering is GPU-powered (hardware accelerated).
4K / 8K 60 FPS is supported.

Stable: Implementation is well-tested & used across number of intensive media playback related apps.
Feature Proof: A simple usage API while offering a large number of features to target multitude of apps.
Modular: Project is split into a number of packages for reducing bundle size.
Cross Platform: Implementation works on all platforms supported by Flutter & Dart:

Android
iOS
macOS
Windows
GNU/Linux
Web

Flexible Architecture:

Major part of implementation (80%+) is in 100% Dart (FFI) & shared across platforms.

Makes the behavior of library same & more predictable across platforms.
Makes development & implementation of new features easier & faster.
Avoids separate maintenance of native implementation for each platform.

Only video embedding code is platform-specific & part of separate package.

You may see project's architecture & implementation details for further information.
The project aims to meet demands of the community, this includes:

Holding accountability.
Ensuring timely maintenance.

Supported Formats #
A wide variety of formats & codecs are supported. Complete list may be found below:

3dostr 3DO STR
4xm 4X Technologies
aa Audible AA format files
aac raw ADTS AAC (Advanced Audio Coding)
aax CRI AAX
ac3 raw AC-3
ace tri-Ace Audio Container
acm Interplay ACM
act ACT Voice file format
adf Artworx Data Format
adp ADP
ads Sony PS2 ADS
adx CRI ADX
aea MD STUDIO audio
afc AFC
aiff Audio IFF
aix CRI AIX
alaw PCM A-law
alias_pix Alias/Wavefront PIX image
alp LEGO Racers ALP
amr 3GPP AMR
amrnb raw AMR-NB
amrwb raw AMR-WB
anm Deluxe Paint Animation
apac raw APAC
apc CRYO APC
ape Monkey's Audio
apm Ubisoft Rayman 2 APM
apng Animated Portable Network Graphics
aptx raw aptX
aptx_hd raw aptX HD
aqtitle AQTitle subtitles
argo_asf Argonaut Games ASF
argo_brp Argonaut Games BRP
argo_cvg Argonaut Games CVG
asf ASF (Advanced / Active Streaming Format)
asf_o ASF (Advanced / Active Streaming Format)
ass SSA (SubStation Alpha) subtitle
ast AST (Audio Stream)
au Sun AU
av1 AV1 Annex B
avi AVI (Audio Video Interleaved)
avr AVR (Audio Visual Research)
avs Argonaut Games Creature Shock
avs2 raw AVS2-P2/IEEE1857.4
avs3 raw AVS3-P2/IEEE1857.10
bethsoftvid Bethesda Softworks VID
bfi Brute Force & Ignorance
bfstm BFSTM (Binary Cafe Stream)
bin Binary text
bink Bink
binka Bink Audio
bit G.729 BIT file format
bitpacked Bitpacked
bmp_pipe piped bmp sequence
bmv Discworld II BMV
boa Black Ops Audio
bonk raw Bonk
brender_pix BRender PIX image
brstm BRSTM (Binary Revolution Stream)
c93 Interplay C93
caf Apple CAF (Core Audio Format)
cavsvideo raw Chinese AVS (Audio Video Standard)
cdg CD Graphics
cdxl Commodore CDXL video
cine Phantom Cine
codec2 codec2 .c2 demuxer
codec2raw raw codec2 demuxer
concat Virtual concatenation script
cri_pipe piped cri sequence
dash Dynamic Adaptive Streaming over HTTP
data raw data
daud D-Cinema audio
dcstr Sega DC STR
dds_pipe piped dds sequence
derf Xilam DERF
dfa Chronomaster DFA
dfpwm raw DFPWM1a
dhav Video DAV
dirac raw Dirac
dnxhd raw DNxHD (SMPTE VC-3)
dpx_pipe piped dpx sequence
dsf DSD Stream File (DSF)
dshow DirectShow capture
dsicin Delphine Software International CIN
dss Digital Speech Standard (DSS)
dts raw DTS
dtshd raw DTS-HD
dv DV (Digital Video)
dvbsub raw dvbsub
dvbtxt dvbtxt
dxa DXA
ea Electronic Arts Multimedia
ea_cdata Electronic Arts cdata
eac3 raw E-AC-3
epaf Ensoniq Paris Audio File
exr_pipe piped exr sequence
f32be PCM 32-bit floating-point big-endian
f32le PCM 32-bit floating-point little-endian
f64be PCM 64-bit floating-point big-endian
f64le PCM 64-bit floating-point little-endian
ffmetadata FFmpeg metadata in text
film_cpk Sega FILM / CPK
filmstrip Adobe Filmstrip
fits Flexible Image Transport System
flac raw FLAC
flic FLI/FLC/FLX animation
flv FLV (Flash Video)
frm Megalux Frame
fsb FMOD Sample Bank
fwse Capcom's MT Framework sound
g722 raw G.722
g723_1 G.723.1
g726 raw big-endian G.726 ("left aligned")
g726le raw little-endian G.726 ("right aligned")
g729 G.729 raw format demuxer
gdigrab GDI API Windows frame grabber
gdv Gremlin Digital Video
gem_pipe piped gem sequence
genh GENeric Header
gif CompuServe Graphics Interchange Format (GIF)
gif_pipe piped gif sequence
gsm raw GSM
gxf GXF (General eXchange Format)
h261 raw H.261
h263 raw H.263
h264 raw H.264 video
hca CRI HCA
hcom Macintosh HCOM
hdr_pipe piped hdr sequence
hevc raw HEVC video
hls Apple HTTP Live Streaming
hnm Cryo HNM v4
ico Microsoft Windows ICO
idcin id Cinematic
idf iCE Draw File
iff IFF (Interchange File Format)
ifv IFV CCTV DVR
ilbc iLBC storage
image2 image2 sequence
image2pipe piped image2 sequence
imf IMF (Interoperable Master Format)
ingenient raw Ingenient MJPEG
ipmovie Interplay MVE
ipu raw IPU Video
ircam Berkeley/IRCAM/CARL Sound Format
iss Funcom ISS
iv8 IndigoVision 8000 video
ivf On2 IVF
ivr IVR (Internet Video Recording)
j2k_pipe piped j2k sequence
jacosub JACOsub subtitle format
jpeg_pipe piped jpeg sequence
jpegls_pipe piped jpegls sequence
jpegxl_pipe piped jpegxl sequence
jv Bitmap Brothers JV
kux KUX (YouKu)
kvag Simon & Schuster Interactive VAG
laf LAF (Limitless Audio Format)
lavfi Libavfilter virtual input device
live_flv live RTMP FLV (Flash Video)
lmlm4 raw lmlm4
loas LOAS AudioSyncStream
lrc LRC lyrics
luodat Video CCTV DAT
lvf LVF
lxf VR native stream (LXF)
m4v raw MPEG-4 video
matroska,webm Matroska / WebM
mca MCA Audio Format
mcc MacCaption
mgsts Metal Gear Solid: The Twin Snakes
microdvd MicroDVD subtitle format
mjpeg raw MJPEG video
mjpeg_2000 raw MJPEG 2000 video
mlp raw MLP
mlv Magic Lantern Video (MLV)
mm American Laser Games MM
mmf Yamaha SMAF
mods MobiClip MODS
moflex MobiClip MOFLEX
mov,mp4,m4a,3gp,3g2,mj2 QuickTime / MOV
mp3 MP2/3 (MPEG audio layer 2/3)
mpc Musepack
mpc8 Musepack SV8
mpeg MPEG-PS (MPEG-2 Program Stream)
mpegts MPEG-TS (MPEG-2 Transport Stream)
mpegtsraw raw MPEG-TS (MPEG-2 Transport Stream)
mpegvideo raw MPEG video
mpjpeg MIME multipart JPEG
mpl2 MPL2 subtitles
mpsub MPlayer subtitles
msf Sony PS3 MSF
msnwctcp MSN TCP Webcam stream
msp Microsoft Paint (MSP))
mtaf Konami PS2 MTAF
mtv MTV
mulaw PCM mu-law
musx Eurocom MUSX
mv Silicon Graphics Movie
mvi Motion Pixels MVI
mxf MXF (Material eXchange Format)
mxg MxPEG clip
nc NC camera feed
nistsphere NIST SPeech HEader REsources
nsp Computerized Speech Lab NSP
nsv Nullsoft Streaming Video
nut NUT
nuv NuppelVideo
obu AV1 low overhead OBU
ogg Ogg
oma Sony OpenMG audio
paf Amazing Studio Packed Animation File
pam_pipe piped pam sequence
pbm_pipe piped pbm sequence
pcx_pipe piped pcx sequence
pfm_pipe piped pfm sequence
pgm_pipe piped pgm sequence
pgmyuv_pipe piped pgmyuv sequence
pgx_pipe piped pgx sequence
phm_pipe piped phm sequence
photocd_pipe piped photocd sequence
pictor_pipe piped pictor sequence
pjs PJS (Phoenix Japanimation Society) subtitles
pmp Playstation Portable PMP
png_pipe piped png sequence
pp_bnk Pro Pinball Series Soundbank
ppm_pipe piped ppm sequence
psd_pipe piped psd sequence
psxstr Sony Playstation STR
pva TechnoTrend PVA
pvf PVF (Portable Voice Format)
qcp QCP
qdraw_pipe piped qdraw sequence
qoi_pipe piped qoi sequence
r3d REDCODE R3D
rawvideo raw video
realtext RealText subtitle format
redspark RedSpark
rka RKA (RK Audio)
rl2 RL2
rm RealMedia
roq id RoQ
rpl RPL / ARMovie
rsd GameCube RSD
rso Lego Mindstorms RSO
rtp RTP input
rtsp RTSP input
s16be PCM signed 16-bit big-endian
s16le PCM signed 16-bit little-endian
s24be PCM signed 24-bit big-endian
s24le PCM signed 24-bit little-endian
s32be PCM signed 32-bit big-endian
s32le PCM signed 32-bit little-endian
s337m SMPTE 337M
s8 PCM signed 8-bit
sami SAMI subtitle format
sap SAP input
sbc raw SBC (low-complexity subband codec)
sbg SBaGen binaural beats script
scc Scenarist Closed Captions
scd Square Enix SCD
sdns Xbox SDNS
sdp SDP
sdr2 SDR2
sds MIDI Sample Dump Standard
sdx Sample Dump eXchange
ser SER (Simple uncompressed video format for astronomical capturing)
sga Digital Pictures SGA
sgi_pipe piped sgi sequence
shn raw Shorten
siff Beam Software SIFF
simbiosis_imx Simbiosis Interactive IMX
sln Asterisk raw pcm
smjpeg Loki SDL MJPEG
smk Smacker
smush LucasArts Smush
sol Sierra SOL
sox SoX native
spdif IEC 61937 (compressed data in S/PDIF)
srt SubRip subtitle
stl Spruce subtitle format
subviewer SubViewer subtitle format
subviewer1 SubViewer v1 subtitle format
sunrast_pipe piped sunrast sequence
sup raw HDMV Presentation Graphic Stream subtitles
svag Konami PS2 SVAG
svg_pipe piped svg sequence
svs Square SVS
swf SWF (ShockWave Flash)
tak raw TAK
tedcaptions TED Talks captions
thp THP
tiertexseq Tiertex Limited SEQ
tiff_pipe piped tiff sequence
tmv 8088flex TMV
truehd raw TrueHD
tta TTA (True Audio)
tty Tele-typewriter
txd Renderware TeXture Dictionary
ty TiVo TY Stream
u16be PCM unsigned 16-bit big-endian
u16le PCM unsigned 16-bit little-endian
u24be PCM unsigned 24-bit big-endian
u24le PCM unsigned 24-bit little-endian
u32be PCM unsigned 32-bit big-endian
u32le PCM unsigned 32-bit little-endian
u8 PCM unsigned 8-bit
v210 Uncompressed 4:2:2 10-bit
v210x Uncompressed 4:2:2 10-bit
vag Sony PS2 VAG
vbn_pipe piped vbn sequence
vc1 raw VC-1
vc1test VC-1 test bitstream
vfwcap VfW video capture
vidc PCM Archimedes VIDC
vividas Vividas VIV
vivo Vivo
vmd Sierra VMD
vobsub VobSub subtitle format
voc Creative Voice
vpk Sony PS2 VPK
vplayer VPlayer subtitles
vqf Nippon Telegraph and Telephone Corporation (NTT) TwinVQ
w64 Sony Wave64
wady Marble WADY
wav WAV / WAVE (Waveform Audio)
wavarc Waveform Archiver
wc3movie Wing Commander III movie
webm_dash_manifest WebM DASH Manifest
webp_pipe piped webp sequence
webvtt WebVTT subtitle
wsaud Westwood Studios audio
wsd Wideband Single-bit Data (WSD)
wsvqa Westwood Studios VQA
wtv Windows Television (WTV)
wv WavPack
wve Psion 3 audio
xa Maxis XA
xbin eXtended BINary text (XBIN)
xbm_pipe piped xbm sequence
xmd Konami XMD
xmv Microsoft XMV
xpm_pipe piped xpm sequence
xvag Sony PS3 XVAG
xwd_pipe piped xwd sequence
xwma Microsoft xWMA
yop Psygnosis YOP
yuv4mpegpipe YUV4MPEG pipe
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Notes:

The list contains the supported formats (& not containers).

A video/audio format may be present in a number of containers.
e.g. an MP4 file generally contains H264 video stream.

On the web, format support depends upon the web browser.

It happens to be extremely limited as compared to native platforms.

Permissions #
You may need to declare & request internet access or file-system permissions depending upon platform.
Android #
Edit android/app/src/main/AndroidManifest.xml to add the following permissions inside <manifest> tag:
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.app">
<application
...
/>
</application>

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

<uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
<uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
</manifest>
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Use package:permission_handler to request access at runtime:
if (/* Android 13 or higher. */) {
// Video permissions.
if (await Permission.videos.isDenied || await Permission.videos.isPermanentlyDenied) {
final state = await Permission.videos.request();
if (!state.isGranted) {
await SystemNavigator.pop();
}
}
// Audio permissions.
if (await Permission.audio.isDenied || await Permission.audio.isPermanentlyDenied) {
final state = await Permission.audio.request();
if (!state.isGranted) {
await SystemNavigator.pop();
}
}
} else {
if (await Permission.storage.isDenied || await Permission.storage.isPermanentlyDenied) {
final state = await Permission.storage.request();
if (!state.isGranted) {
await SystemNavigator.pop();
}
}
}
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iOS #
Edit ios/Runner/Info-Release.plist, ios/Runner/Info-Profile.plist, ios/Runner/Info-Debug.plist:
Enable internet access
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
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Windows #
N/A
macOS #
Edit macos/Runner/Release.entitlements & macos/Runner/DebugProfile.entitlements:
Enable internet access
<key>com.apple.security.network.client</key>
<true/>
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Disable sand-box to access files
<key>com.apple.security.app-sandbox</key>
<false/>
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GNU/Linux #
N/A
Web #
N/A
Notes #
Android #
N/A
iOS #
N/A
Windows #
N/A
macOS #
During the build phase, the following warnings are not critical and cannot be silenced:
#import "Headers/media_kit_video-Swift.h"
^
/path/to/media_kit/media_kit_test/build/macos/Build/Products/Debug/media_kit_video/media_kit_video.framework/Headers/media_kit_video-Swift.h:270:31: warning: 'objc_ownership' only applies to Objective-C object or block pointer types; type here is 'CVPixelBufferRef' (aka 'struct __CVBuffer *')
- (CVPixelBufferRef _Nullable __unsafe_unretained)copyPixelBuffer SWIFT_WARN_UNUSED_RESULT;
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# 1 "<command line>" 1
^
<command line>:20:9: warning: 'POD_CONFIGURATION_DEBUG' macro redefined
#define POD_CONFIGURATION_DEBUG 1 DEBUG=1
^
#define POD_CONFIGURATION_DEBUG 1
^
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GNU/Linux #
Install libmpv
System shared libraries from distribution specific user-installed packages are used by-default. This is how GNU/Linux works. You can install these as follows:
Ubuntu/Debian
sudo apt install libmpv-dev mpv
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Packaging
There are other ways to bundle these within your app package e.g. within Snap or Flatpak. Few examples:

Celluloid
VidCutter

Utilize mimalloc
You should consider replacing the default memory allocator with mimalloc for avoiding memory leaks.
This is as simple as adding one line to linux/CMakeLists.txt:
target_link_libraries(${BINARY_NAME} PRIVATE ${MIMALLOC_LIB})
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Web #
On the web, libmpv is not used. Video & audio playback is handled by embedding HTML <video> element. The format support depends upon the web browser. It happens to be extremely limited as compared to native platforms.
License #
Copyright © 2021 & onwards, Hitesh Kumar Saini <saini123hitesh@gmail.com>
This project & the work under this repository is governed by MIT license that can be found in the LICENSE file.