I HAVE JUST GOT NERO START SMART...I WENT TO PLAY A FILM AND IT TELLS ME I HAVENT GOT VIDS MP43 DECOMPRESSOR??????? TRIED TO FIND THIS BUT NOT HAVING MUCH LUCK ANY ONE HELP ME???THANKS 
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That’s the Microsoft mpeg-4 version 3 codec. One of the first three downloads on this page should work.
http://www.microsoft.com/windows/windowsmedia/format/codecdownload.aspx
If it fails I would guess nero is asking for a video for windows (vfw) codec instead of a directshow one. In that case get this package from here
http://www.undercut.org/download/
choose the uc ms-mpeg 4 pack.
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can a nero startsmart essential burn a video file to a dvd format??
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