How can I detect the progress(initialize/end) of video player in Flutter?

Question

I am very new to Flutter and don't know much about it.

I am using video_player and chewie package in Flutter. I want to send analytics data when video starts and ends.

So, I want to know both timing. how can I detect the video start / end timing?

My code is following.

import 'package:chewie/chewie.dart';
import 'package:flutter/material.dart';
import 'package:video_player/video_player.dart';

class VideoItem extends StatefulWidget {
  final VideoPlayerController videoPlayerController;
  final bool looping;

  VideoItem({
    @required this.videoPlayerController,
    this.looping,
    Key key,
  }) : super(key: key);

  @override
  _VideoState createState() => _VideoState();

}

class _VideoState extends State<VideoItem> {
  ChewieController _chewieController;

  @override
  void initState() {
    super.initState();

    _chewieController = ChewieController(
      videoPlayerController: widget.videoPlayerController,
      aspectRatio: 1 / 1,
      autoPlay: true,
      autoInitialize: true,
      looping: widget.looping,
      allowFullScreen: false,
      allowMuting: true,
      errorBuilder: (context, errorMessage) {
        return Center(
          child: Text(
            errorMessage,
            style: TextStyle(color: Colors.white),
          ),
        );
      },
    );
  }

...

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(0.0),
      child: Chewie(
        controller: _chewieController,
      ),
    );
  }
}

Answer 1

Add a Listener function to your videoPlayerController , and inside that function check the the current position of your VideoPlayer :

import 'package:chewie/chewie.dart';
import 'package:flutter/material.dart';
import 'package:video_player/video_player.dart';

class VideoItem extends StatefulWidget {
  final VideoPlayerController videoPlayerController;
  final bool looping;

  VideoItem({
    @required this.videoPlayerController,
    this.looping,
    Key key,
  }) : super(key: key);

  @override
  _VideoState createState() => _VideoState();

}

class _VideoState extends State<VideoItem> {
  ChewieController _chewieController;

  @override
  void initState() {
    super.initState();

    widget.videoPlayerController.addListener(checkVideo);

    _chewieController = ChewieController(
      videoPlayerController: widget.videoPlayerController,
      aspectRatio: 1 / 1,
      autoPlay: true,
      autoInitialize: true,
      looping: widget.looping,
      allowFullScreen: false,
      allowMuting: true,
      errorBuilder: (context, errorMessage) {
        return Center(
          child: Text(
            errorMessage,
            style: TextStyle(color: Colors.white),
          ),
        );
      },
    );
  }

...

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(0.0),
      child: Chewie(
        controller: _chewieController,
      ),
    );
  }

    void checkVideo(){
    // Implement your calls inside these conditions' bodies : 
    if(videoPlayerController.value.position == Duration(seconds: 0, minutes: 0, hours: 0)) {
      print('video Started');
    }

    if(videoPlayerController.value.position == videoPlayerController.value.duration) {
      print('video Ended');
    }

  }
} 

Answer 2

What you can do is initialize the video_player's controller and add a custom listener to it. Here's that snippet.

  _videoController = VideoPlayerController.file(File(s));

  _videoController.initialize().then((value) => {
        _videoController.addListener(() {                       //custom Listner
          setState(() {
            if (!_videoController.value.isPlaying &&_videoController.value.initialized &&
                (_videoController.value.duration ==_videoController.value.position)) { //checking the duration and position every time
              setState(() {});
            }
          });
        })
      });

Here I am not sure for how many seconds it hits but it works pretty fine for me.

Answer 3

We can do the same using flutter_hooks:

@override
  Widget build(BuildContext context) {
    final VideoPlayerController _videoPlayerController =
        VideoPlayerController.network(dataSource);
    final ValueNotifier<bool> _isVideoFinished = useState(false);

    useEffect(() {
      void checkIsFinished() {
        _isVideoFinished.value = _videoPlayerController.value.isInitialized &&
            _videoPlayerController.value.position ==
                _videoPlayerController.value.duration;
      }

      _videoPlayerController.addListener(checkIsFinished);
      return () {
        _videoPlayerController.removeListener(checkIsFinished);
      };
    }, <VideoPlayerController>[_videoPlayerController]);

    return Scaffold(
      resizeToAvoidBottomInset: false,
      body: IntroductionScreen(
        pages: <PageViewModel>[
          PageViewModel(
            title: "",
            image: VideoItem(
              videoPlayerController: _videoPlayerController,
              autoPlay: true,
            ),
            body: "",
            decoration: const PageDecoration(fullScreen: true),
          ),
        ],
        done: const Text("Done", style: TextStyle(fontWeight: FontWeight.w600)),
        showDoneButton: _isVideoFinished.value,
        onDone: onDone,
        showNextButton: false,
      ),
    );
  }

Don't forget to use it in a HookWidget.

Answer 4

if (widget.url != null) {
  _controller = VideoPlayerController.network(widget.url)
    ..initialize().then((_) {
      // Ensure the first frame is shown after the video is initialized, even before the play button has been pressed.
      setState(() {});
      _controller!.addListener(() {
        if (_controller!.value.position == _controller!.value.duration) {
          setState(() {
            hidden = false;
          });
        }
      });
    });
} else if (widget.file != null) {
  _controller = VideoPlayerController.file(widget.file)
    ..initialize().then((_) {
      // Ensure the first frame is shown after the video is initialized, even before the play button has been pressed.
      setState(() {});
      _controller!.addListener(() {
        if (_controller!.value.position == _controller!.value.duration) {
          setState(() {
            hidden = false;
          });
        }
      });
    });
}

Answer 5

New Update! Add code like this try this .. Cheers

controller.addListener(() {
     // checkVideo();
     if (controller.value.isCompleted) {
       startTime();
     }
 });

Answer 6

• After the video controller is initialized add listeners to listen to every movement of the video like play, pause, video duration, etc.

try this code

• This code worked for me.

• Use of Provider state management.