File conversion to mp3 returning failure everytime.

[Sanath-Balthar]

I am trying to convert an audio file generated from flutter "text to speech" package to mp3 file but it is failing everytime.
I have written the below code for file conversion. The conversion fails everytime. I have imported the package ffmpeg_kit_flutter. It doesnt even show why the conversion is failing. I have looked up in stackoverflow and other sites but could not find any relevant solutions. Could anyone please guide me? Let me know if you need more information. I am using vscode as editor. I have attached flutter doctor output below as well.

List<String> command = [
              '-i', audiofilepath,
              '-c:a', 'libmp3lame',
              '$filePath/999.mp3'
            ];

` await FFmpegKitConfig.enableLogs();
            FFmpegKitConfig.enableLogCallback((log) =>print('FFmpeg log: $log'));        
          FFmpegSession result = await FFmpegKit.executeWithArguments(command);
          dynamic resultcode = await result.getReturnCode();
          dynamic resultlogs = await result.getLogsAsString();
          // FFmpegKitConfig.setLogLevel(logLevel)
          if(ReturnCode.isSuccess(resultcode)){
          print("file saved after conversion at $filePath/999.mp3 and result : Success and logs : $resultlogs");
          }
          else{
            print("file saved after conversion at $filePath/999.mp3 and result : failure and logs : $resultlogs");
          }`

Flutter doctor output:
[√] Flutter (Channel stable, 3.19.6, on Microsoft Windows [Version 10.0.22631.3296], locale en-IN)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[√] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[√] Chrome - develop for the web
[!] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.9.5)
X Visual Studio is missing necessary components. Please re-run the Visual Studio installer for the "Desktop development with C++"
workload, and include these components:
MSVC v142 - VS 2019 C++ x64/x86 build tools
- If there are multiple build tool versions available, install the latest
C++ CMake tools for Windows
Windows 10 SDK
[√] Android Studio (version 2023.2)
[√] VS Code (version 1.89.0)
[√] Connected device (3 available)
[√] Network resources

! Doctor found issues in 1 category.

Edit: attaching error logs:

D/ffmpeg-kit-flutter(29014): FFmpegKitFlutterPlugin stopped listening to events.
D/ffmpeg-kit-flutter(29014): FFmpegKitFlutterPlugin com.arthenica.ffmpegkit.flutter.FFmpegKitFlutterPlugin@a5d9788 started listening to events on io.flutter.plugin.common.EventChannel$IncomingStreamRequestHandler$EventSinkImplementation@187019f.
I/flutter (29014): Loaded ffmpeg-kit-flutter-android-audio-arm64-v8a-6.0.3.
I/flutter (29014): Result : failure and logs : ffmpeg version n6.0 Copyright (c) 2000-2023 the FFmpeg developers
    I/flutter (29014):   built with Android (7155654, based on r399163b1) clang version 11.0.5 (https://android.googlesource.com/toolchain/llvm-project 87f1315dfbea7c137aa2e6d362dbb457e388158d)
I/flutter (29014):   configuration: --cross-prefix=aarch64-linux-android- --sysroot=/Users/sue/Library/Android/sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/darwin-x86_64/sysroot --prefix=/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/ffmpeg --pkg-config=/opt/homebrew/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --target-os=android --enable-neon --enable-asm --enable-inline-asm --ar=aarch64-linux-android-ar --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --ranlib=aarch64-linux-android-ranlib --strip=aarch64-linux-android-strip --nm=aarch64-linux-android-nm --extra-libs='-L/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --disable-autodetect --enable-cross-compile

[gongwangjie]

• 1