Recording and playing video - ios

Question

In my current flutter project i need to record video, modified it and then show to user.
The problem is that in the iOS (14.2) the recorded video/modified can not be shown by video player, unfortunately there is no error from iOS (tested on physical devices).
Libraries and versions:
video_player: 1.0.1
flick_video_player: ^0.1.1
camera: ^0.5.8+17
flutter_ffmpeg: ^0.3.0
The reason why i do not use newest version of camera is that it is bugged and for certain number of devices there is no way to show even the preview.
Code:
Camera initialization
Future<void> _initCamera() async {
final cameras = await availableCameras();
final camera = cameras.firstWhereOrNull(
(element) => element.lensDirection == CameraLensDirection.back,
);
_controller = CameraController(
camera,
resolutionTarget,
enableAudio: false,
);
await _controller.initialize();
await _controller.prepareForVideoRecording();
//Show the preview
setState(() {});
}
Recording video
Future<void> startVideoRecording() async {
_videoPath = await generatePath(PathExtension.mp4);
await _controller.startVideoRecording(_videoPath);
}
Future<String> stopVideoRecording() async{
await _controller.stopVideoRecording();
return _videoPath;
}
Showing recorded video
void _createFlickManager(File videoFile) {
final videoController = VideoPlayerController.file(videoFile);
_flickManager = FlickManager(
videoPlayerController: videoController,
);
}
Widget _buildVideoPreview(){
return FlickVideoPlayer(
flickManager: _flickManager,
flickVideoWithControls:
FlickVideoWithControls(controls: Container()),
);
}
Summary:
the camera preview is showing properly,
the recording video file has size and does not throw any exception,
black screen when trying to show video using FlickVideoPlayer or just VideoPlayer,
converted video to mp4/mov by ffmpeg still not working.

Answer 1

Apparently in iOS 14.2 there is problem with paths that contains spaces, as i used DateTime.now()
to generate unique file name and that was reason of the problem. Changing it to DateTime.now().millisecond solved it.