mediainfo有时候无法获取视频信息，求高手指教
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悬赏园豆：20
[待解决问题]
private static WindowsFormsApplication1.MediaInfo mps = new WindowsFormsApplication1.MediaInfo();
string path = filePath.Substring(0, filePath.LastIndexOf("\\"));
string fileName = filePath.Substring(filePath.LastIndexOf("\\") + 1);
mps.Open(fileName);
string allTime = mps.Get(StreamKind.Video, 0, "Duration/String3");
