Cant convert Stream on Linux container

[ValeriiInshyn]

 private async Task<MemoryStream> ConvertWavToMp3Async(MemoryStream  input)
  {
      MemoryStream result = new MemoryStream();

      await FFMpegArguments
          .FromPipeInput(new StreamPipeSource(input))
          .OutputToPipe(new StreamPipeSink(result), options =>
          {
              options
                  .WithAudioCodec(AudioCodec.LibMp3Lame)
                  .WithAudioBitrate(AudioQuality.Low)
                  .ForceFormat("mp3");
          }).ProcessAsynchronously(ffMpegOptions: _ffOptions);
      result.Position = 0;

      return result;
  }

This is my function to convert media files. I am trying to convert from gsm610 to mp3 in general. But in this function I am trying only convert MemoryStream to another MemoryStream to get another format.

My problem:
When I run my app on windows - everything is good (i get right audio file - mp3), when i run it on linux - i get empty video file.
After converting my input buffer (pinned .csv file):

Windows:
Capacity: 317952
Length: 251757

Linux Container:
Capacity: 256
Length: 45

dockerrun.csv

[ValeriiInshyn]

Remark: I'm working with skype media resources and it has its own extra-parameters in header and i want to deal with them somehow.

[epgeroy]

I'm having the exact same problem 1 year later. @ValeriiInshyn did you find a solution?

MemoryStream outputStream = new();
bool result = FFMpegArguments
  .FromPipeInput(new StreamPipeSource(inputStream))
  .OutputToPipe(new StreamPipeSink(outputStream), options => options
    .WithAudioBitrate(AudioQuality.Normal)
    .WithAudioCodec(AudioCodec.LibMp3Lame)
    .ForceFormat("mp3")
  )
  .ProcessSynchronously(throwOnError: true);
  
if (!result)
{
  _logger.LogError("Failed to convert audio to mp3");
}

The code is pretty much the same; I don't get any exceptions thrown, nor a false value in result

Any help is appreciated.