How to extract Dart/Flutter video metadata

Question

I am developing a flutter demo app. I want to use metadata about a video in my phone storage. I am able to extract the path of that video, but don't know how to extract its metadata in dart/flutter.

I need the following metadata:

1. Duration of video
2. Name of video
3. Size of video
4. When video was taken

Answer 1

One of the ways to get the creation time of the video in FLutter is to use flutter_ffmpeg plugin.

1. Add it to the pubspec.yaml:

   dependencies:
      flutter_ffmpeg: ^0.3.0
   

2. Get the file path of your video, for example with file_picker:

   File pickedFile = await FilePicker.getFile(); 
   

3. Get meta data of the video by its path using ffmpeg:

    final FlutterFFprobe flutterFFprobe = FlutterFFprobe();
    MediaInformation mediaInformation = await flutterFFprobe.getMediaInformation(pickedFile.path);
    Map<dynamic, dynamic> mp = mediaInformation.getMediaProperties();
    String creationTime = mp["tags"]["creation_time"];
    print("creationTime: $creationTime");
   

And in the console you'll get smth like this:

I/flutter (13274): creationTime: 2020-09-24T17:59:24.000000Z

Along with creation time, there are other useful details:

Note: adding this plugin to your app increases the weight of your final apk!