libVLC数据。音频通道给出了错误的通道数

...

videoMedia = new Media(libVLC, new Uri(videoMediaFile));
videoMedia.ParsedChanged += OnVideoMediaParsedChanged;
videoMedia.Parse(MediaParseOptions.ParseNetwork);

...

private void OnVideoMediaParsedChanged(object sender, MediaParsedChangedEventArgs e)
        {
            
            foreach (var track in videoMedia.Tracks)
            {
                
                
                switch (track.TrackType)
                {
                    case TrackType.Audio:
                        Debug.WriteLine("Audio track");
                        Debug.WriteLine($"{nameof(track.Data.Audio.Channels)}: {track.Data.Audio.Channels}");
                        Debug.WriteLine($"{nameof(track.Data.Audio.Rate)}: {track.Data.Audio.Rate}");
                        Debug.WriteLine(FourCCConverter.FromFourCC(track.OriginalFourcc));

                        break;
                    case TrackType.Video:
                        Debug.WriteLine("Video track");
                        Debug.WriteLine($"{nameof(track.Data.Video.FrameRateNum)}: {track.Data.Video.FrameRateNum}");
                        Debug.WriteLine($"{nameof(track.Data.Video.FrameRateDen)}: {track.Data.Video.FrameRateDen}");
                        Debug.WriteLine($"{nameof(track.Data.Video.Height)}: {track.Data.Video.Height}");
                        Debug.WriteLine($"{nameof(track.Data.Video.Width)}: {track.Data.Video.Width}");
                        break;
                }
            }


            button1.Invoke(new Action(() =>
            {
                button1.Enabled = true;
            }));

        }

Video track
FrameRateNum: 30000
FrameRateDen: 1001
Height: 1080
Width: 1920
Audio track
Channels: 2
Rate: 48000
mp4a

在VLC我可以看到 3F2R/LFE

我怎样才能让libVLC给我 aout_FormatPrintChannels

//编辑:在播放视频大约1/3秒后(无论是本地文件还是网络),我开始得到正确的数字(6)。但这真的不好,因为我想事先重新映射频道实际上。。。