[BUG]: stopRecorder returning empty Url of recorded audio on iOS, working fine on android.

Flutter Sound Version :

Full

flutter pub deps | grep flutter_sound |-- flutter_sound_lite 8.1.1 | |-- flutter_sound_platform_interface 8.1.1 | |-- flutter_sound_web 8.1.1 | | |-- flutter_sound_platform_interface…

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Severity

• Result is not what expected ? Expected url path however getting empty string

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Platforms you faced the error

• iOS Yes

• Emulator Yes

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Describe the bug stopRecorder returning empty Url of recorded audio on iOS, working fine on android.

To Reproduce

Future record() async {
    final isGranted = await Permission.microphone.request();
    if(isGranted.isGranted){
      await _flutterSoundRecorder.openAudioSession();
      await _flutterSoundRecorder.startRecorder(toFile: "${DateTime.now().toString()}.mp3");
    }else{
      print("Permission not granted");
    }
}

  Future<String> stopRecording()async{
    final url = await _flutterSoundRecorder.stopRecorder();
    await _flutterSoundRecorder.closeAudioSession();


    print(url);
    return url //url = "" in ios;
  }

calling stopRecording returning empty string only in ios.

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Logs!!!

flutter: FS:---> openAudioSession
flutter: ---> openAudioSession
flutter: Resetting flutter_sound Recorder Plugin
@resetPlugin
iOS: ---> resetPlugin
iOS: <--- resetPlugin
@openRecorder
IOS:--> setAudioFocus
IOS:<-- setAudioFocus
flutter: <--- openAudioSession
flutter: ---> openRecorderCompleted: true
flutter: <--- openRecorderCompleted: true
flutter: FS:<--- openAudioSession
flutter: FS:---> startRecorder
flutter: FS:---> _startRecorder.
flutter: Calling instance.startRecorder
flutter: ---> startRecorderCompleted: true
flutter: <--- startRecorderCompleted: true
flutter: FS:<--- _startRecorder.
flutter: FS:<--- startRecorder
flutter: recording start
flutter: FS:---> stopRecorder
flutter: FS:---> stopRecorder
flutter: FS:---> stop
iOS ---> stopRecorder
iOS <--- stopRecorder
flutter: ---> stopRecorderCompleted: true
flutter: <---- stopRecorderCompleted: true
flutter: FS:<--- stop
flutter: FS:<--- stopRecorder :
flutter: FS:<--- stopRecorder
flutter: FS:---> closeAudioSession
flutter: FS:---> closeAudioSession
flutter: FS:---> stop
iOS ---> stopRecorder
iOS <--- stopRecorder
flutter: ---> stopRecorderCompleted: true
flutter: <---- stopRecorderCompleted: true
flutter: FS:<--- stop
iOS ---> closeRecorder
iOS: ---> releaseSession
iOS: <--- releaseSession
iOS <--- closeRecorder
flutter: ---> closeRecorderCompleted
flutter: <--- closeRecorderCompleted
flutter: FS:<--- closeAudioSession
flutter: FS:<--- closeAudioSession
flutter: [URL expected but empty]

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[Larpoux]

Yes @mhstoller , You are right : probably better if Flutter Sound throws an understable exception when the user tries to record something which has a mp3 extension.

Mp3 cannot be recorded, neither on iOS nor Android. MP3 is (was?) not a free codec, and we must have a Thomson license to record mp3. One of my many project is to allow recoding MP3, using the “lame” library. (Actually Flutter Sound is linked with Mobile FFmpeg, and Mobile FFmpeg includes the “lame” library).

I told @themaaz32 that he/she is wrong trying to record Mp3, but I think that it is not really the problem. Actually Flutter Sound does not use the file extension to select the Codec. It uses a codec: parameter and this parameter has a default value AAC. Another solution is to have the Codec parameter mandatory and not optional. I would prefer this solution but this would be a breaking change

But I really agree with you : if the extension is incorrect, probably the developer is trying to do something wrong and we must display at least a Warning. Actually I am busy on implemented a smart “Logger” : the Developer will be able to choose if he/she wants to have the full debugging logs, or just Errors and Warnings. Please keep this issue open : someone should do something for those kinds of problems.

BTW : @mhstoller : you are great 👍 . You spent time yesterday on another Problem Report, and you tried to execute the @AbdallahLabib’s Code. I really appreciate that you spend time on Flutter Sound maintenance. There is not enough developers involved in the Flutter Sound maintenance and development.

[Larpoux]

@mhstoller ,

Your Pull Request is implemented in v.8.2.6. I will release this version in a few days. Thank you again for your contribution. I really appreciate that you help me doing Flutter Sound Customer(?) Support.