1. Youtube Movie Maker based on Microsoft® DirectShow® technology, works well on Windows XP/Vista(32Bit and 64Bit)/7(32Bit and 64Bit)/8(32Bit and 64Bit)/10(32Bit and 64Bit), etc. need any one VGA card, and Directx 9 or higher.
4. At least more than 2GB free disk space in the hard drive which be used to save Temporary Working Files.
Temporary Files Folder is very important, you can select "Options->Temporary Folder->Change..." to change the Temporary Files Folder.
The software need to save some temp working files on the Temporary Files Folder when make youtube videos.
The software need to convert the wrong profile videos to right profile and save on the Temporary Files Folder before upload onto Youtube.
The temporary files will be automatically deleted when quit Youtube Movie Maker.