# Compiling iSpy The 32 bit and 64 bit solutions require **Visual Studio 2015** to build. The FFMPEG project requires that visual studio 2010 is installed. To build without visual studio 2010 you should: for 32 bit: 1) remove the ffmpeg project from the solution 2) copy the files in /ffmpeg/ffmpeg/bin into /ffmpeg/bin 3) add a reference to the ispy.video.ffmpeg.dll file in /ffmpeg/bin for 64 bit: 1) remove the ffmpeg project from the solution 2) copy the files in /ffmpeg/ffmpeg64/bin into /ffmpeg/bin64 3) add a reference to the ispy.video.ffmpeg.dll in /ffmpeg/bin64 For building the Setup project [Wix Toolset 3.10+](http://wixtoolset.org/) must be installed. (Make sure you restart Visual Studio after installing) To build the full installer compile the Bootstrap32 or Bootstrap64 project If there is an error finding a merge module building the setup project then the merge modules are available in the Merge Modules directory