[Flutter] MissingPluginException

[Heragoga]

Description
I have installed ffmpeg-kit full in my flutter app, but when I try to use any command with FFmpegKit.execute() I get a MissingPluginException.

Expected behavior
I want to use it to convert an mp3 file into a wav file, but the crash does not depend on the command.

Current behavior
Every time I use FFmpegKit.execute, no matter what command I insert it crashes. I know that such issues happen when you hot reload after installing the package, but I am sure I have ruled that out as it even crashes when I build an apk and install it on android. The method is more or less skipped.

To Reproduce
I have:

• installed ffmpeg_kit_flutter_full: ^5.1.0 in my pubspec.yaml (tried different packages and versions, all the same results)

• executed: `import 'package:ffmpeg_kit_flutter_full/ffmpeg_kit.dart';
  import 'package:ffmpeg_kit_flutter_full/return_code.dart';
  String message = "Fail";
  if (extension == "mp3") {
  FFmpegKit.execute('ffmpeg -i $path $savePath').then((session) async {
  final returnCode = await session.getReturnCode();

    if (ReturnCode.isSuccess(returnCode)) {
      print("Converted $path to $savePath");
      message = "Succes";
    } else if (ReturnCode.isCancel(returnCode)) {
      print("Canceled $path to $savePath");
      message = "Cancel";
    } else {
      message = "Error";
    }
  });` (although whats inside execute() doesn't matter, the string message always remains "fail")
  

• both tried to launch it through flutter run and by building an apk with flutter build apk --release

• and got the log in my console

Logs
`[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: MissingPluginException(No implementation found for method getLogLevel on channel flutter.arthenica.com/ffmpeg_kit)
#0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:313:7)

#1 FFmpegKitInitializer._initialize (package:ffmpeg_kit_flutter_full/src/ffmpeg_kit_flutter_initializer.dart:313:22)

#2 FFmpegKitInitializer.initialize (package:ffmpeg_kit_flutter_full/src/ffmpeg_kit_flutter_initializer.dart:54:7)

#3 FFmpegKitConfig.init (package:ffmpeg_kit_flutter_full/ffmpeg_kit_config.dart:50:5)

#4 AbstractSession.createFFmpegSession (package:ffmpeg_kit_flutter_full/abstract_session.dart:69:7)

#5 FFmpegSession.create (package:ffmpeg_kit_flutter_full/ffmpeg_session.dart:40:21)

#6 FFmpegKit.executeWithArguments (package:ffmpeg_kit_flutter_full/ffmpeg_kit.dart:44:9)

══╡ EXCEPTION CAUGHT BY SERVICES LIBRARY ╞══════════════════════════════════════════════════════════
The following MissingPluginException was thrown while activating platform stream on channel
flutter.arthenica.com/ffmpeg_kit_event:
MissingPluginException(No implementation found for method listen on channel
flutter.arthenica.com/ffmpeg_kit_event)

When the exception was thrown, this was the stack:
#0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:313:7)

#1 EventChannel.receiveBroadcastStream. (package:flutter/src/services/platform_channel.dart:662:9)

════════════════════════════════════════════════════════════════════════════════════════════════════`

Environment

• Platform: Flutter
• Version: v5.1
• Source branch: main

Thank you in advance

[saurabhkumar8112]

I could replicate this too.
Flutter 3.7.1.
I was trying to convert a video to images and same error popped in

[saurabhkumar8112]

I could replicate this in versions 5.1.0 and 4.5.1

[saurabhkumar8112]

update: same issue is there on 4.5.0

[Heragoga]

I managed to fix it by cloning their testing application and replacing their main.dart with mine

[Dilawarkkhan]

It seems that the FFmpegKit package you're using is not working properly on your platform. The error message "No implementation found for method getLogLevel on channel flutter.arthenica.com/ffmpeg_kit" indicates that the native implementation of the plugin is not available.

One solution is to try using a different package for FFmpeg integration, such as the flutter_ffmpeg package. You can check the official documentation and the examples in the repository to see how to use it to convert audio files.

If you still want to use the FFmpegKit package, you can try reaching out to the package maintainers for support. They might be able to help you resolve the issue or provide more information about why the package is not working on your platform.

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