how to install mediainfo in msvc2010 step by step? I tried to do this but do not know how to add the dll and it should compile code to test.
What you want to do? Compile MediaInfo or use the DLL?
For the DLL, download the .zip package, e.g. http://mediaarea.net/download/binary/libmediainfo0/0.7.61/MediaInfo_DLL_0.7.61_Windows_i386_WithoutInstaller.7z , it ocntains 2 msvc2010 example projects for using the DLL.