➕ Add flutter webrtc

⬇️ Downgrade analyzer & custom lint for fix flutter new version related bugs

lib/pods/call.dart

@@ -0,0 +1,94 @@
+import 'package:flutter_webrtc/flutter_webrtc.dart';
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import 'package:dio/dio.dart';
+import 'package:island/pods/network.dart';
+
+part 'call.g.dart';
+part 'call.freezed.dart';
+
+@freezed
+sealed class CallState with _$CallState {
+  const factory CallState({
+    required bool isMuted,
+    required bool isConnected,
+    String? error,
+  }) = _CallState;
+}
+
+@riverpod
+class CallNotifier extends _$CallNotifier {
+  RTCPeerConnection? _peerConnection;
+  MediaStream? _localStream;
+  final _localRenderer = RTCVideoRenderer();
+
+  @override
+  CallState build() {
+    return const CallState(isMuted: false, isConnected: false);
+  }
+
+  Future<void> initialize() async {
+    try {
+      await _localRenderer.initialize();
+
+      // Get user media (audio)
+      _localStream = await navigator.mediaDevices.getUserMedia({
+        'audio': true,
+        'video': false,
+      });
+
+      // Create peer connection
+      _peerConnection = await createPeerConnection({
+        'iceServers': [
+          {'urls': 'stun:stun.l.google.com:19302'},
+          // Add your Cloudflare TURN servers here
+        ],
+      });
+
+      // Add local stream to peer connection
+      _localStream!.getTracks().forEach((track) {
+        _peerConnection!.addTrack(track, _localStream!);
+      });
+
+      // Handle incoming tracks
+      _peerConnection!.onTrack = (RTCTrackEvent event) {
+        if (event.track.kind == 'audio') {
+          // Handle remote audio track
+        }
+      };
+
+      state = state.copyWith(isConnected: true);
+    } catch (e) {
+      state = state.copyWith(error: e.toString());
+    }
+  }
+
+  Future<void> createSession() async {
+    try {
+      final apiClient = ref.read(apiClientProvider);
+      final response = await apiClient.post(
+        'YOUR_CLOUDFLARE_CALLS_ENDPOINT/sessions',
+        options: Options(headers: {'Content-Type': 'application/json'}),
+      );
+
+      if (response.statusCode == 200) {
+        // Handle session creation
+      }
+    } catch (e) {
+      state = state.copyWith(error: e.toString());
+    }
+  }
+
+  void toggleMute() {
+    state = state.copyWith(isMuted: !state.isMuted);
+    _localStream?.getAudioTracks().forEach((track) {
+      track.enabled = !state.isMuted;
+    });
+  }
+
+  void dispose() {
+    _localStream?.dispose();
+    _peerConnection?.dispose();
+    _localRenderer.dispose();
+  }
+}

lib/pods/call.freezed.dart

@@ -0,0 +1,148 @@
+// dart format width=80
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'call.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+// dart format off
+T _$identity<T>(T value) => value;
+/// @nodoc
+mixin _$CallState {
+
+ bool get isMuted; bool get isConnected; String? get error;
+/// Create a copy of CallState
+/// with the given fields replaced by the non-null parameter values.
+@JsonKey(includeFromJson: false, includeToJson: false)
+@pragma('vm:prefer-inline')
+$CallStateCopyWith<CallState> get copyWith => _$CallStateCopyWithImpl<CallState>(this as CallState, _$identity);
+
+
+
+@override
+bool operator ==(Object other) {
+  return identical(this, other) || (other.runtimeType == runtimeType&&other is CallState&&(identical(other.isMuted, isMuted) || other.isMuted == isMuted)&&(identical(other.isConnected, isConnected) || other.isConnected == isConnected)&&(identical(other.error, error) || other.error == error));
+}
+
+
+@override
+int get hashCode => Object.hash(runtimeType,isMuted,isConnected,error);
+
+@override
+String toString() {
+  return 'CallState(isMuted: $isMuted, isConnected: $isConnected, error: $error)';
+}
+
+
+}
+
+/// @nodoc
+abstract mixin class $CallStateCopyWith<$Res>  {
+  factory $CallStateCopyWith(CallState value, $Res Function(CallState) _then) = _$CallStateCopyWithImpl;
+@useResult
+$Res call({
+ bool isMuted, bool isConnected, String? error
+});
+
+
+
+
+}
+/// @nodoc
+class _$CallStateCopyWithImpl<$Res>
+    implements $CallStateCopyWith<$Res> {
+  _$CallStateCopyWithImpl(this._self, this._then);
+
+  final CallState _self;
+  final $Res Function(CallState) _then;
+
+/// Create a copy of CallState
+/// with the given fields replaced by the non-null parameter values.
+@pragma('vm:prefer-inline') @override $Res call({Object? isMuted = null,Object? isConnected = null,Object? error = freezed,}) {
+  return _then(_self.copyWith(
+isMuted: null == isMuted ? _self.isMuted : isMuted // ignore: cast_nullable_to_non_nullable
+as bool,isConnected: null == isConnected ? _self.isConnected : isConnected // ignore: cast_nullable_to_non_nullable
+as bool,error: freezed == error ? _self.error : error // ignore: cast_nullable_to_non_nullable
+as String?,
+  ));
+}
+
+}
+
+
+/// @nodoc
+
+
+class _CallState implements CallState {
+  const _CallState({required this.isMuted, required this.isConnected, this.error});
+  
+
+@override final  bool isMuted;
+@override final  bool isConnected;
+@override final  String? error;
+
+/// Create a copy of CallState
+/// with the given fields replaced by the non-null parameter values.
+@override @JsonKey(includeFromJson: false, includeToJson: false)
+@pragma('vm:prefer-inline')
+_$CallStateCopyWith<_CallState> get copyWith => __$CallStateCopyWithImpl<_CallState>(this, _$identity);
+
+
+
+@override
+bool operator ==(Object other) {
+  return identical(this, other) || (other.runtimeType == runtimeType&&other is _CallState&&(identical(other.isMuted, isMuted) || other.isMuted == isMuted)&&(identical(other.isConnected, isConnected) || other.isConnected == isConnected)&&(identical(other.error, error) || other.error == error));
+}
+
+
+@override
+int get hashCode => Object.hash(runtimeType,isMuted,isConnected,error);
+
+@override
+String toString() {
+  return 'CallState(isMuted: $isMuted, isConnected: $isConnected, error: $error)';
+}
+
+
+}
+
+/// @nodoc
+abstract mixin class _$CallStateCopyWith<$Res> implements $CallStateCopyWith<$Res> {
+  factory _$CallStateCopyWith(_CallState value, $Res Function(_CallState) _then) = __$CallStateCopyWithImpl;
+@override @useResult
+$Res call({
+ bool isMuted, bool isConnected, String? error
+});
+
+
+
+
+}
+/// @nodoc
+class __$CallStateCopyWithImpl<$Res>
+    implements _$CallStateCopyWith<$Res> {
+  __$CallStateCopyWithImpl(this._self, this._then);
+
+  final _CallState _self;
+  final $Res Function(_CallState) _then;
+
+/// Create a copy of CallState
+/// with the given fields replaced by the non-null parameter values.
+@override @pragma('vm:prefer-inline') $Res call({Object? isMuted = null,Object? isConnected = null,Object? error = freezed,}) {
+  return _then(_CallState(
+isMuted: null == isMuted ? _self.isMuted : isMuted // ignore: cast_nullable_to_non_nullable
+as bool,isConnected: null == isConnected ? _self.isConnected : isConnected // ignore: cast_nullable_to_non_nullable
+as bool,error: freezed == error ? _self.error : error // ignore: cast_nullable_to_non_nullable
+as String?,
+  ));
+}
+
+
+}
+
+// dart format on

lib/pods/call.g.dart

@@ -0,0 +1,27 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'call.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$callNotifierHash() => r'a910dfa778c42888f8b8e5ab199b25ce8a74392b';
+
+/// See also [CallNotifier].
+@ProviderFor(CallNotifier)
+final callNotifierProvider =
+    AutoDisposeNotifierProvider<CallNotifier, CallState>.internal(
+      CallNotifier.new,
+      name: r'callNotifierProvider',
+      debugGetCreateSourceHash:
+          const bool.fromEnvironment('dart.vm.product')
+              ? null
+              : _$callNotifierHash,
+      dependencies: null,
+      allTransitiveDependencies: null,
+    );
+
+typedef _$CallNotifier = AutoDisposeNotifier<CallState>;
+// ignore_for_file: type=lint
+// ignore_for_file: subtype_of_sealed_class, invalid_use_of_internal_member, invalid_use_of_visible_for_testing_member, deprecated_member_use_from_same_package

lib/screens/chat/call.dart

@@ -0,0 +1,40 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:island/pods/call.dart';
+
+class CallScreen extends HookConsumerWidget {
+  const CallScreen({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final callState = ref.watch(callNotifierProvider);
+    final callNotifier = ref.read(callNotifierProvider.notifier);
+
+    useEffect(() {
+      callNotifier.initialize();
+      return null;
+    }, []);
+
+    return Scaffold(
+      appBar: AppBar(title: const Text('Audio Call')),
+      body: Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            if (callState.error != null)
+              Text(callState.error!, style: const TextStyle(color: Colors.red)),
+            IconButton(
+              icon: Icon(callState.isMuted ? Icons.mic_off : Icons.mic),
+              onPressed: callNotifier.toggleMute,
+            ),
+            if (callState.isConnected)
+              const Text('Connected')
+            else
+              const CircularProgressIndicator(),
+          ],
+        ),
+      ),
+    );
+  }
+}

linux/flutter/generated_plugin_registrant.cc

@@ -10,12 +10,14 @@
 #include <file_selector_linux/file_selector_plugin.h>
 #include <flutter_platform_alert/flutter_platform_alert_plugin.h>
 #include <flutter_udid/flutter_udid_plugin.h>
+#include <flutter_webrtc/flutter_web_r_t_c_plugin.h>
 #include <irondash_engine_context/irondash_engine_context_plugin.h>
 #include <media_kit_libs_linux/media_kit_libs_linux_plugin.h>
 #include <media_kit_video/media_kit_video_plugin.h>
 #include <sqlite3_flutter_libs/sqlite3_flutter_libs_plugin.h>
 #include <super_native_extensions/super_native_extensions_plugin.h>
 #include <url_launcher_linux/url_launcher_plugin.h>
+#include <volume_controller/volume_controller_plugin.h>
 
 void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) bitsdojo_window_linux_registrar =
@@ -30,6 +32,9 @@ void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) flutter_udid_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterUdidPlugin");
   flutter_udid_plugin_register_with_registrar(flutter_udid_registrar);
+  g_autoptr(FlPluginRegistrar) flutter_webrtc_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterWebRTCPlugin");
+  flutter_web_r_t_c_plugin_register_with_registrar(flutter_webrtc_registrar);
   g_autoptr(FlPluginRegistrar) irondash_engine_context_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "IrondashEngineContextPlugin");
   irondash_engine_context_plugin_register_with_registrar(irondash_engine_context_registrar);
@@ -48,4 +53,7 @@ void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) url_launcher_linux_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "UrlLauncherPlugin");
   url_launcher_plugin_register_with_registrar(url_launcher_linux_registrar);
+  g_autoptr(FlPluginRegistrar) volume_controller_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "VolumeControllerPlugin");
+  volume_controller_plugin_register_with_registrar(volume_controller_registrar);
 }

linux/flutter/generated_plugins.cmake

@@ -7,12 +7,14 @@ list(APPEND FLUTTER_PLUGIN_LIST
   file_selector_linux
   flutter_platform_alert
   flutter_udid
+  flutter_webrtc
   irondash_engine_context
   media_kit_libs_linux
   media_kit_video
   sqlite3_flutter_libs
   super_native_extensions
   url_launcher_linux
+  volume_controller
 )
 
 list(APPEND FLUTTER_FFI_PLUGIN_LIST

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -14,6 +14,7 @@ import firebase_messaging
 import flutter_inappwebview_macos
 import flutter_platform_alert
 import flutter_udid
+import flutter_webrtc
 import irondash_engine_context
 import media_kit_libs_macos_video
 import media_kit_video
@@ -37,6 +38,7 @@ func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   InAppWebViewFlutterPlugin.register(with: registry.registrar(forPlugin: "InAppWebViewFlutterPlugin"))
   FlutterPlatformAlertPlugin.register(with: registry.registrar(forPlugin: "FlutterPlatformAlertPlugin"))
   FlutterUdidPlugin.register(with: registry.registrar(forPlugin: "FlutterUdidPlugin"))
+  FlutterWebRTCPlugin.register(with: registry.registrar(forPlugin: "FlutterWebRTCPlugin"))
   IrondashEngineContextPlugin.register(with: registry.registrar(forPlugin: "IrondashEngineContextPlugin"))
   MediaKitLibsMacosVideoPlugin.register(with: registry.registrar(forPlugin: "MediaKitLibsMacosVideoPlugin"))
   MediaKitVideoPlugin.register(with: registry.registrar(forPlugin: "MediaKitVideoPlugin"))

pubspec.lock

@@ -18,7 +18,7 @@ packages:
     source: hosted
     version: "1.3.55"
   analyzer:
-    dependency: transitive
+    dependency: "direct overridden"
     description:
       name: analyzer
       sha256: "192d1c5b944e7e53b24b5586db760db934b177d4147c42fbca8c8c5f1eb8d11e"
@@ -26,13 +26,13 @@ packages:
     source: hosted
     version: "7.3.0"
   analyzer_plugin:
-    dependency: transitive
+    dependency: "direct overridden"
     description:
       name: analyzer_plugin
-      sha256: b3075265c5ab222f8b3188342dcb50b476286394a40323e85d1fa725035d40a4
+      sha256: "1d460d14e3c2ae36dc2b32cef847c4479198cf87704f63c3c3c8150ee50c3916"
       url: "https://pub.dev"
     source: hosted
-    version: "0.13.0"
+    version: "0.12.0"
   animations:
     dependency: "direct main"
     description:
@@ -69,10 +69,10 @@ packages:
     dependency: transitive
     description:
       name: async
-      sha256: d2872f9c19731c2e5f10444b14686eb7cc85c76274bd6c16e1816bff9a3bab63
+      sha256: "758e6d74e971c3e5aceb4110bfd6698efc7f501675bcfe0c775459a8140750eb"
       url: "https://pub.dev"
     source: hosted
-    version: "2.12.0"
+    version: "2.13.0"
   auto_route:
     dependency: "direct main"
     description:
@@ -386,7 +386,7 @@ packages:
     source: hosted
     version: "0.7.5"
   custom_lint_visitor:
-    dependency: transitive
+    dependency: "direct overridden"
     description:
       name: custom_lint_visitor
       sha256: "36282d85714af494ee2d7da8c8913630aa6694da99f104fb2ed4afcf8fc857d8"
@@ -401,6 +401,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.1.0"
+  dart_webrtc:
+    dependency: transitive
+    description:
+      name: dart_webrtc
+      sha256: "5b76fd85ac95d6f5dee3e7d7de8d4b51bfbec1dc73804647c6aebb52d6297116"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.5.3+hotfix.2"
   dbus:
     dependency: transitive
     description:
@@ -525,10 +533,10 @@ packages:
     dependency: transitive
     description:
       name: fake_async
-      sha256: "6a95e56b2449df2273fd8c45a662d6947ce1ebb7aafe80e550a3f68297f3cacc"
+      sha256: "5368f224a74523e8d2e7399ea1638b37aecfca824a3cc4dfdf77bf1fa905ac44"
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.2"
+    version: "1.3.3"
   ffi:
     dependency: transitive
     description:
@@ -845,6 +853,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_webrtc:
+    dependency: "direct main"
+    description:
+      name: flutter_webrtc
+      sha256: dd47ca103b5b6217771e6277882674276d9621bbf9eb23da3c03898b507844e3
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.14.1"
   font_awesome_flutter:
     dependency: transitive
     description:
@@ -1041,10 +1057,10 @@ packages:
     dependency: transitive
     description:
       name: intl
-      sha256: d6f56758b7d3014a48af9701c085700aac781a92a87a62b1333b46d8879661cf
+      sha256: "3df61194eb431efc39c4ceba583b95633a403f46c9fd341e550ce0bfa50e9aa5"
       url: "https://pub.dev"
     source: hosted
-    version: "0.19.0"
+    version: "0.20.2"
   io:
     dependency: transitive
     description:
@@ -1097,10 +1113,10 @@ packages:
     dependency: transitive
     description:
       name: leak_tracker
-      sha256: c35baad643ba394b40aac41080300150a4f08fd0fd6a10378f8f7c6bc161acec
+      sha256: "6bb818ecbdffe216e81182c2f0714a2e62b593f4a4f13098713ff1685dfb6ab0"
       url: "https://pub.dev"
     source: hosted
-    version: "10.0.8"
+    version: "10.0.9"
   leak_tracker_flutter_testing:
     dependency: transitive
     description:
@@ -1734,10 +1750,10 @@ packages:
     dependency: transitive
     description:
       name: sqlite3
-      sha256: "310af39c40dd0bb2058538333c9d9840a2725ae0b9f77e4fd09ad6696aa8f66e"
+      sha256: c0503c69b44d5714e6abbf4c1f51a3c3cc42b75ce785f44404765e4635481d38
       url: "https://pub.dev"
     source: hosted
-    version: "2.7.5"
+    version: "2.7.6"
   sqlite3_flutter_libs:
     dependency: transitive
     description:
@@ -1854,10 +1870,10 @@ packages:
     dependency: "direct main"
     description:
       name: table_calendar
-      sha256: b2896b7c86adf3a4d9c911d860120fe3dbe03c85db43b22fd61f14ee78cdbb63
+      sha256: "0c0c6219878b363a2d5f40c7afb159d845f253d061dc3c822aa0d5fe0f721982"
       url: "https://pub.dev"
     source: hosted
-    version: "3.1.3"
+    version: "3.2.0"
   term_glyph:
     dependency: transitive
     description:
@@ -2023,10 +2039,10 @@ packages:
     dependency: transitive
     description:
       name: vector_graphics_compiler
-      sha256: "1b4b9e706a10294258727674a340ae0d6e64a7231980f9f9a3d12e4b42407aad"
+      sha256: "557a315b7d2a6dbb0aaaff84d857967ce6bdc96a63dc6ee2a57ce5a6ee5d3331"
       url: "https://pub.dev"
     source: hosted
-    version: "1.1.16"
+    version: "1.1.17"
   vector_math:
     dependency: transitive
     description:
@@ -2055,18 +2071,18 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: "0968250880a6c5fe7edc067ed0a13d4bae1577fe2771dcf3010d52c4a9d3ca14"
+      sha256: ddfa8d30d89985b96407efce8acbdd124701f96741f2d981ca860662f1c0dc02
       url: "https://pub.dev"
     source: hosted
-    version: "14.3.1"
+    version: "15.0.0"
   volume_controller:
     dependency: transitive
     description:
       name: volume_controller
-      sha256: e82fd689bb8e1fe8e64be3fa5946ff8699058f8cf9f4c1679acdba20cda7f5bd
+      sha256: d75039e69c0d90e7810bfd47e3eedf29ff8543ea7a10392792e81f9bded7edf5
       url: "https://pub.dev"
     source: hosted
-    version: "3.3.3"
+    version: "3.4.0"
   wakelock_plus:
     dependency: transitive
     description:
@@ -2115,6 +2131,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.0.3"
+  webrtc_interface:
+    dependency: transitive
+    description:
+      name: webrtc_interface
+      sha256: "86fe3afc81a08481dfb25cf14a5a94e27062ecef25544783f352c914e0bbc1ca"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.2+hotfix.2"
   win32:
     dependency: transitive
     description:

pubspec.yaml

@@ -101,6 +101,7 @@ dependencies:
   dismissible_page: ^1.0.2
   super_sliver_list: ^0.4.1
   super_clipboard: ^0.9.0-dev.6
+  flutter_webrtc: ^0.14.1
 
 dev_dependencies:
   flutter_test:
@@ -122,6 +123,13 @@ dev_dependencies:
   drift_dev: ^2.26.0
   flutter_launcher_icons: ^0.14.3
 
+dependency_overrides:
+  # https://github.com/dart-lang/sdk/issues/60784#issuecomment-2904784415
+  analyzer: 7.3.0
+  analyzer_plugin: 0.12.0
+  # https://github.com/dart-lang/sdk/issues/60784#issuecomment-2906872272
+  custom_lint_visitor: 1.0.0+7.3.0
+
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec
 

windows/flutter/generated_plugin_registrant.cc

@@ -12,6 +12,7 @@
 #include <flutter_inappwebview_windows/flutter_inappwebview_windows_plugin_c_api.h>
 #include <flutter_platform_alert/flutter_platform_alert_plugin.h>
 #include <flutter_udid/flutter_udid_plugin_c_api.h>
+#include <flutter_webrtc/flutter_web_r_t_c_plugin.h>
 #include <irondash_engine_context/irondash_engine_context_plugin_c_api.h>
 #include <media_kit_libs_windows_video/media_kit_libs_windows_video_plugin_c_api.h>
 #include <media_kit_video/media_kit_video_plugin_c_api.h>
@@ -33,6 +34,8 @@ void RegisterPlugins(flutter::PluginRegistry* registry) {
       registry->GetRegistrarForPlugin("FlutterPlatformAlertPlugin"));
   FlutterUdidPluginCApiRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FlutterUdidPluginCApi"));
+  FlutterWebRTCPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("FlutterWebRTCPlugin"));
   IrondashEngineContextPluginCApiRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("IrondashEngineContextPluginCApi"));
   MediaKitLibsWindowsVideoPluginCApiRegisterWithRegistrar(

windows/flutter/generated_plugins.cmake

@@ -9,6 +9,7 @@ list(APPEND FLUTTER_PLUGIN_LIST
   flutter_inappwebview_windows
   flutter_platform_alert
   flutter_udid
+  flutter_webrtc
   irondash_engine_context
   media_kit_libs_windows_video
   media_kit_video