应某用户的需求，编写了这款根据音视频时长分类小工具。

实际效果如下：

显示的是时分秒：

核心代码：

MediaInfo MI;  if (MI.Open(strPathInput.c_str()) == 0){return -1;}_tstring stDuration = MI.Get(stream_t::Stream_Audio,0,_T("Duration/String3")).c_str();if (stDuration.length() == 0){return -1;}//去掉小数点后面的stDuration = CStdStr::GetNameOfFile(stDuration, false);//合法stDuration = CStdStr::ToValidFileName(stDuration, _T('-'));MI.Close(); _tstring strDir = CStdStr::GetDirOfFile(strPathInput);_tstring strRootDir = CStdStr::AddSlashIfNeeded(strDir);if (_access(CStdStr::ws2s(strRootDir).c_str(), 0) != 0 && !CreateDirectory(CString(strRootDir.c_str()), NULL)){return -1;}_tstring stYearMonth = stDuration;_tstring stSaveDir = strRootDir + stYearMonth;const _tstring& sStr = strPathInput;if (_access(CStdStr::ws2s(stSaveDir).c_str(), 0) != 0 && !CreateDirectory(CString(stSaveDir.c_str()), NULL)){return -1;}const _tstring stSaveDirBak(stSaveDir);//如果当前目录已经存在超过nMaxCount个文件，则需要新建目录int nDirIndex = 0;std::vector<_tstring> vFilesExisted;while (g_nMaxCount > 0 && getFiles(stSaveDir, vFilesExisted, "*") >= g_nMaxCount){++nDirIndex;_tstring stSaveDirNew = stSaveDirBak + _T("-") + CStdTpl::ConvertToString(nDirIndex);if (_access(CStdStr::ws2s(stSaveDirNew).c_str(), 0) != 0 && !CreateDirectory(CString(stSaveDirNew.c_str()), NULL)){return -1;}vFilesExisted.clear();stSaveDir = stSaveDirNew;}_tstring strSavePath = CStdStr::AddSlashIfNeeded(stSaveDir) + CStdStr::GetNameOfFile(sStr);g_Mutex.Lock();int nNum = 0;if (CStdFile::IfAccessFile(strSavePath)){do{++nNum;strSavePath = CStdStr::AddSlashIfNeeded(stSaveDir) + CStdStr::GetNameOfFile(sStr, false) + CStdTpl::ConvertToString(nNum) + CStdStr::GetSuffixOfFile(sStr);} while (CStdFile::IfAccessFile(strSavePath));}//查看同目录下，是否存在mp3, mp4, srt文件MoveDefFile(sStr, strSavePath, _T(".mp3"));MoveDefFile(sStr, strSavePath, _T(".mp4"));MoveDefFile(sStr, strSavePath, _T(".srt"));g_Mutex.Unlock();return 0;
}

即可实现，移动到指定目录，上述代码还实现了同名srt等移动到相同目录，这也是因为用户的需求。

欢迎交流与讨论。