When I purchased my HP desktop with Windows 7 Home Premium 64 bit system it had Windows Live Movie Maker installed. It has disappeared. I have downloaded Windows Essentials and now have Windows Movie Maker on my computer. It is not the Live Movie Maker. Is there much of a difference? I cannot get the LIVE version back. Can I have both on my computer? This all started because a book I have said I could use Windows Movie Maker to change TS ( Or other) videos to DV-AVI for further editing in Adobe Premier Elements 10. Windows Movie Maker will not give me that option but it will convert to MP4. So  Is there a difference? Can you help me get the Live version back? Do I need it? Is Mp4 good enough? Am I asking for too much?  Thank you for any help.  George