Flutter- Firebase 存储上传视频

Question

我想上传视频Firebase Storage。我是这样试的。

 Future uploadToStorage() async {
    try {
      final DateTime now = DateTime.now();
      final int millSeconds = now.millisecondsSinceEpoch;
      final String month = now.month.toString();
      final String date = now.day.toString();
      final String storageId = (millSeconds.toString() + uid);
      final String today = ('$month-$date'); 

      final file = await ImagePicker.pickVideo(source: ImageSource.gallery);

      StorageReference ref = FirebaseStorage.instance.ref().child("video").child(today).child(storageId);
      StorageUploadTask uploadTask = ref.putFile(file);

      Uri downloadUrl = (await uploadTask.future).downloadUrl;

        final String url = downloadUrl.toString();

     print(url);

    } catch (error) {
      print(error);
      }

    }

但问题是我上传了 3 个不同的视频。一个来自真实设备，其他来自 Ios 模拟器，只有一个来自模拟器的视频被识别为这样的视频。

文件：/Users/Daibaku/Library/Developer/CoreSimulator/Devices/C99406E4-12F3-480A-82A6-F6144ADD21AB/data/Containers/Data/Application/23E82E18-9293-4EEB-AEEA-6A7BB773F2F2-6A7BB773F2F2-6A7BB773F2F2-12F3-480A-82A6-F6144ADD21AB -BA8E-5F219374D8C8-7394-000006A2FA530CD0.MOV'

文件：'/Users/Daibaku/Library/Developer/CoreSimulator/Devices/C99406E4-12F3-480A-82A6-F6144ADD21AB/data/Containers/Data/Application/23E82E18-9293-4EEB-AEEA-6A7F975C5-12F3-480A-82A6-F6144ADD21AB 4804-9312-69E1696CAF87-7394-000006A80D46F0B7.MOV'

这些是来自模拟器的文件路径，底部的一个被识别为视频。有谁知道发生了什么以及如何解决它？谢谢！

编辑 抱歉，图片上的最后一张是手动上传的（我从我的查找器中放入了存储）。所以模拟器和真机都不能上传视频。

Answer 1

我解决了。关键是您必须像这样手动指定元数据内容类型。

Future uploadToStorage() async {
try {
  final DateTime now = DateTime.now();
  final int millSeconds = now.millisecondsSinceEpoch;
  final String month = now.month.toString();
  final String date = now.day.toString();
  final String storageId = (millSeconds.toString() + uid);
  final String today = ('$month-$date'); 

 final file =  await ImagePicker.pickVideo(source: ImageSource.gallery);

  StorageReference ref = FirebaseStorage.instance.ref().child("video").child(today).child(storageId);
  StorageUploadTask uploadTask = ref.putFile(file, StorageMetadata(contentType: 'video/mp4')); <- this content type does the trick

  Uri downloadUrl = (await uploadTask.future).downloadUrl;

    final String url = downloadUrl.toString();

 print(url);

} catch (error) {
  print(error);
  }

}