I have an image picker in flutter ro get the video from the device. and then i created a function to extract the audio using ffmpeg_kit_flutter package.

 Future<void> _convertVideoToAudio() async {
    if (_pickedVideo != null) {
      bool? permissionGranted = await _requestStoragePermission();
      if (permissionGranted != true) {
        print("Storage permission denied.");
        return;
      }

      String videoPath = _pickedVideo!.path;
      _outputPath = await getOutputFilePath(); // Get platform-specific path

      try {
        // Ensure the output directory exists
        await Directory(path.dirname(_outputPath)).create(recursive: true);

        await FFmpegKit.execute(
            "-i $videoPath -vn -c:a libmp3lame -q:a 2 $_outputPath"); // FFmpeg command
        print("Video converted to audio successfully!");
        _showSuccessDialog(); // Display success dialog

        try {
          final String fileName = path.basename(_outputPath);
          final transcription =
              await _sendAudioForTranscription(_outputPath, fileName);

          if (transcription != null) {
            setState(() {
              _transcription = transcription;
            });
          } else {
            setState(() {
              _transcription = "Transcription failed";
            });
          }
        } catch (e) {
          print('Error in transcription request: $e');
          setState(() {
            _transcription = "Network request failed";
          });
        }
      } catch (e) {
        print("Error converting video: $e");
        _showErrorDialog(); // Display error dialog
      } finally {
        setState(() {
          _pickedVideo = null; // Clear selected video
        });
      }
    } else {
      print("Please pick a video first.");
    }
  }

and for getting the path i have this function

 Future<String> getOutputFilePath() async {
    final directory = await getApplicationDocumentsDirectory();
    final downloadsDirectory = Directory('${directory.path}/downloads');
    if (!(await downloadsDirectory.exists())) {
      await downloadsDirectory.create(recursive: true);
    }
    final String fileName = path
        .basename(_pickedVideo!.path)
        .replaceAll('.mp4', '.mp3'); // Replace extension
    final filePath = '${downloadsDirectory.path}/$fileName';
    return filePath;
  }

but this is not working somehow. b/c after i get the audio i’m uploading it to a server with http, then it displays that there is no path where the audio supposed to be.

can someone help me with this? any help is appreciated.