v1.0.45

New so release.

Includes the follow changes.

• double getMediaDuration(const char* filePath);
• int isValidMediaFile(const char* filePath);
• int convertMediaFormat(const char* srcFilePath, const char* destDirPath, const char* outputFileName, const char* outputFormat);
• int generateThumbnail(const char* srcFilePath, const char* outputDirPath, const char* outputFileName, const char* outputFormat, int width, int height);
• char** generateThumbnails(const char* srcFilePath, const char* outputDirPath, int width, int height, int numThumbnails);