[BUG] `AssetEntity.file` failed to cache videos

[Tom3652]

Expect

I would like to know what is the impact of this error when using assetEntity.file for file upload (if it has any) :

flutter: PlatformException(Could not cache the video file., null, null, null)
flutter: 
#0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:607:7)
#1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:167:18)
<asynchronous suspension>
#2      AssetEntity._getFile (package:photo_manager/src/types/entity.dart:675:26)
<asynchronous suspension>

-> I am using this assetEntity.file path to upload the content on my server.

I have made some retry logic if my users kill the app while uploading, so the upload restarts at the next app opened session. Some of them told me that they had not the file to upload anymore sometimes, and i saw in the logs that the file doesn't exist anymore.

The path looks like this : /private/var/mobile/Containers/Data/Application/166AFEFA-FC94-4321-8013-8AF74CAF2A27/tmp/.video/1661572400.150018_IMG_4786.MOV

Is it possible that the OS clears out everything on this path by itself ? Does it mean i have to copy the content of assetEntity.file in my app directory to make sure the file is not deleted for upload ?

Thanks a lot in advance

[AlexV525]

Can you update the code for more detailed logs?

https://github.com/fluttercandies/flutter_photo_manager/blob/a684b80c63ce0508cb174c2c5061935140951bb4/ios/Classes/core/PMManager.m#L601

[Tom3652]

Do you want me to log more my own code ?

Here is the way i am retrieving / displaying the video asset :

  VideoPlayerController? _controller;

  Future<void> _initVideoWithFile() async {
    LogManager.i("Getting file...");
    final File? mediaUrl = await widget.entity.file;
    if (mediaUrl != null) {
      _controller = VideoPlayerController.file(
        mediaUrl,
      )..initialize().then((_) => setState(() {
            _controller!.setLooping(true);
            _controller!.play();
          }));
    }
  }

  Future<void> _initVideoWithUrl() async {
    LogManager.i("Getting media url...");
    final String? mediaUrl = await widget.entity.getMediaUrl();
    if (mediaUrl != null) {
      _controller = VideoPlayerController.network(
        mediaUrl,
      )..initialize().then((_) => setState(() {
            _controller!.setLooping(true);
            _controller!.play();
          }));
    } else {
      _initVideoWithFile();
    }
  }

  Future<void> initPlayer() async {
    bool available = await widget.entity.isLocallyAvailable();
    LogManager.i("is locally available : $available");
    if (available) {
      _initVideoWithUrl();
    } else {
      _initVideoWithFile();
    }
  }

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

[AlexV525]

As you can see, Could not cache the video file is thrown within the file manager, which might have multiple reasons to fail, like insufficient disk spaces. We can know more when it logs more. I've added the detailed log in 2.3.0.

[Tom3652]

Thanks @AlexV525 with your logs :

open on /private/var/mobile/Containers/Data/Application/8CC59DB8-3876-4731-AAE5-E6A4D0350336/tmp/.video/1662327887.005963_IMG_4805.MP4: File exists
[log] Error from outside Flutter : PlatformException(Could not cache the video file: Error Domain=NSCocoaErrorDomain Code=516 "Impossible de copier « IMG_4805.MP4 » vers « .video » : un élément porte déjà ce nom." UserInfo={NSSourceFilePathErrorKey=/var/mobile/Media/DCIM/114APPLE/IMG_4805.MP4, NSUserStringVariant=(
    Copy
), NSDestinationFilePath=/private/var/mobile/Containers/Data/Application/8CC59DB8-3876-4731-AAE5-E6A4D0350336/tmp/.video/1662327887.005963_IMG_4805.MP4, NSFilePath=/var/mobile/Media/DCIM/114APPLE/IMG_4805.MP4, NSUnderlyingError=0x2819cebb0 {Error Domain=NSPOSIXErrorDomain Code=17 "File exists"}}, null, null, null) 
 #0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:653:7)
#1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:296:18)
<asynchronous suspension>
#2      AssetEntity._getFile (package:photo_manager/src/types/entity.dart:680:26)
<asynchronous suspension>

It's written : "Impossible de copier « IMG_4805.MP4 » vers « .video » : un élément porte déjà ce nom." -> Impossible to copy « IMG_4805.MP4 » to « .video » there is already an element with this name.

[AlexV525]

Impossible to copy « IMG_4805.MP4 » to « .video » there is already an element with this name.

Great, will seek for possible solutions.

[AlexV525]

Can you try to use 9710e10 and see if the issue still exists?

[Tom3652]

Thanks i confirm that it works fine with your commit ! It seems that the load is even faster for the same videos