Windows Movie Maker was discontinued due to the Windows Live Movie Maker, which belongs to the Windows Live Essencials, which is not embedded on Windows 7 by default(you must download and install it manually).
Development of Windows Movie Maker was abandoned after the release of
Windows Vista; its replacement, Windows Live Movie Maker, is included
with Windows Live Essentials, a free download from Windows Live;
that does not have the same features as Windows Movie Maker. Windows
Movie Maker 2.6 for Vista is compatible with Windows 7 and recommended
by video editors, although Windows Movie Maker 2.6 is a stripped down
version and does not include video capture.
Windows Live Essentials includes the following applications:
- Windows Live Family Safety
- Windows Live Mail
- Windows Live Mesh
- Windows Live Messenger
- Windows Live Messenger Companion
- Windows Live Movie Maker
- Windows Live Photo Gallery
- Windows Live Sign-in Assistant
- Windows Live Writer
- Bing Bar
- Microsoft Outlook Hotmail Connector
- Microsoft Silverlight
Windows Live Essentials applications can be installed on Windows Vista
SP2, Windows 7, Windows Server 2008 SP2 or Windows Server 2008 R2.