Windows.Media.Core.Timed​Metadata​Kind中的UWP No Speech选项

using Windows.Media.Core;
using Windows.Media.Playback;

// 创建一个定时元数据跟踪
var timedMetadataTrack = new TimedMetadataTrack("custom-track-id", TimedMetadataKind.Custom);

// 添加自定义元数据项
var customMetadataItem = new TimedMetadataSample("No Speech", "This is a custom metadata item indicating no speech.");
timedMetadataTrack.AddSample(customMetadataItem);

// 将定时元数据轨道添加到媒体播放列表
var mediaSource = MediaSource.CreateFromUri(new Uri("https://example.com/media.mp4"));
mediaSource.ExternalTimedMetadataTracks.Add(timedMetadataTrack);

// 创建媒体播放器并设置媒体源
var mediaPlayer = new MediaPlayer();
mediaPlayer.Source = mediaSource;

// 监听自定义元数据事件
mediaPlayer.TimedMetadataTracksChanged += (sender, e) =>
{
    foreach (var track in mediaPlayer.TimedMetadataTracks)
    {
        if (track.Kind == TimedMetadataKind.Custom)
        {
            track.SampleGenerated += (trackSender, trackEvent) =>
            {
                var sample = trackEvent.Sample;
                if (sample?.Value?.ToString() == "No Speech")
                {
                    // 处理“无语音”情况
                }
            };
        }
    }
};