public TimeSpan GetVideoDuration(string path)
{
MediaMetadataRetriever retriever = new MediaMetadataRetriever();
retriever.SetDataSource(path);
var duration = retriever.ExtractMetadata(MetadataKey.Duration);
double durationMillisec = Convert.ToDouble(duration);
retriever.Dispose();
return(TimeSpan.FromMilliseconds(durationMillisec));
}