Video takes a long time to start playing and using a lot of CPU

[insinfo]

I put dart vlc in my flutter app and I see that
Video takes a long time to start playing and is using a lot of CPU.
takes about 10 seconds to start playback.
It's using around 22% CPU.

import 'package:dart_vlc/dart_vlc.dart';
import 'package:flutter/material.dart';

import 'package:riodasostrasapp/app/shared/theme/style.dart';

class TurismoHomePage extends StatefulWidget {
  @override
  State<TurismoHomePage> createState() => _TurismoHomePageState();
}

class _TurismoHomePageState extends State<TurismoHomePage> {
  late Player player;
  @override
  void initState() {
    player = Player(id: 69420);
    var media2 = Media.network(
        'https://www.experimenteriodasostras.com.br/storage/turismo/midias/ffec8800-09d2-45a4-9b99-09ab04b057bf.mp4');
    player.open(media2);
    player.playbackStream.listen((PlaybackState state) {
      if (state.isCompleted) {
        player.play();
      }
    });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    var screenSize = MediaQuery.of(context).size;

    return Scaffold(
      appBar: appBarDefault(title: 'Turismo'),
      body: Container(
        //padding: EdgeInsets.all(0),
        child: SingleChildScrollView(
          child: Column(
            children: [
              //video
              Container(
                color: Colors.amber,
                width: screenSize.width,
                height: 250,
                child: Video(
                  player: player,
                  scale: 1.0, // default
                  showControls: false, // default
                ),
              ),
              //menu grid
              Container(
                padding: EdgeInsets.all(16),
                width: screenSize.width,
                child: Wrap(
                  spacing: 16,
                  runSpacing: 16,
                  children: [
                    Container(
                      decoration: BoxDecoration(
                          color: Colors.white,
                          borderRadius: BorderRadius.all(Radius.circular(10))),
                      padding: EdgeInsets.all(10),
                      child: Column(
                        children: [
                          Text(
                            '',
                            style: TextStyle(
                                fontFamily: 'pictogramas_turismo',
                                fontSize: 71),
                          )
                        ],
                      ),
                    ),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

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

PS C:\MyDartProjects\riodasostras\riodasostrasapp_mob> flutter run --release
Launching lib\main.dart on Windows in release mode...
Building Windows application...                                         

Flutter run key commands.
h List all available interactive commands.
c Clear the screen
q Quit (terminate the application on the device).
flutter: LoginController chamou contrutor
flutter: ContrachequeController chamou contrutor
flutter: AppModule started!
flutter: -- HomeModule INITIALIZED
flutter: initHomePageState:
flutter: -- TurismoModule INITIALIZED
flutter: -- TurismoModule DISPOSED
[00000263f3c311c0] main filter error: Failed to create video converter
[00000263f7136ef0] main vout display error: Failed to set on top
[00000263f3c318a0] main filter error: Failed to create video converter
[00000263f7022890] main vout display error: Failed to set on top
[h264 @ 00000263f3da15a0] get_buffer() failed
[h264 @ 00000263f3da15a0] thread_get_buffer() failed
[h264 @ 00000263f3da15a0] decode_slice_header error
[h264 @ 00000263f3da15a0] no frame!
[h264 @ 00000263f3da19e0] get_buffer() failed
[h264 @ 00000263f3da19e0] thread_get_buffer() failed
[h264 @ 00000263f3da19e0] decode_slice_header error
[h264 @ 00000263f3da19e0] no frame!

PS C:\MyDartProjects\riodasostras\riodasostrasapp_mob> flutter doctor -v    
[√] Flutter (Channel stable, 2.8.1, on Microsoft Windows [versão 10.0.22000.434], locale pt-BR)
    • Flutter version 2.8.1 at C:\src\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 77d935af4d (6 weeks ago), 2021-12-16 08:37:33 -0800
    • Engine revision 890a5fca2e
    • Dart version 2.15.1

[√] Android toolchain - develop for Android devices (Android SDK version 32.0.0)
    • Android SDK at C:\Users\isaque\AppData\Local\Android\sdk
    • Platform android-32, build-tools 32.0.0
    • Java binary at: C:\Program Files\Android\Android Studio1\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.11.3)
    • Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
    • Visual Studio Community 2019 version 16.11.31702.278
    • Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 2020.3)
    • Android Studio at C:\Program Files\Android\Android Studio1
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)

[√] VS Code (version 1.63.2)
    • VS Code at C:\Users\isaque\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.32.0

[√] Connected device (3 available)
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [versão 10.0.22000.434]
    • Chrome (web)      • chrome  • web-javascript • Google Chrome 97.0.4692.71
    • Edge (web)        • edge    • web-javascript • Microsoft Edge 96.0.1054.62

• No issues found!

[alexmercerind]

It's not hardware accelerated & there's nothing I can do. Same issue reported at #184.

About "Video takes a long time to start playing", then its the issue of your network possibly not the plugin.

[insinfo]

@alexmercerind

About "Video takes a long time to start playing", then its the issue of your network possibly not the plugin.

In google chrome directly accessing the URL the playback starts in less than 2 seconds

[alexmercerind]

In google chrome directly accessing the URL the playback starts in less than 2 seconds

If the opening time is faster in VLC app compared to this plugin, then I can certainly say its a fault in plugin otherwise I can do nothing.

Note that release/debug mode can also affect how things perform.

[insinfo]

I installed vlc on my computer and it seems to be a problem with vlc itself, as it takes an average of 12 seconds for vlc to start playing the video so I opened an issue in the vlc repository.
https://code.videolan.org/videolan/vlc/-/issues/26539

I did a test with the plugin "video_player_windows" and it manages to start playing the video in less than 2 seconds in flutter debug mode, the only problem I saw in video_player_windows is that it keeps the video blinking.
anirudhb/flutter_packages#3

[sadikul1500]

@insinfo How did you solve the following error?

[insinfo]

@sadikul1500
even with these errors in the log the video plays well after 10 seconds, I believe these errors must come from the vlc shared library and not the plugin I think.

try reporting the problem at this link
https://code.videolan.org/videolan/vlc/-/issues/26539