You need to have Quicktime installed in order to import/play these. Mp4 can also be played in DirectShow, if you have the correct filters and configure MC to do so.
I'm sorry but .mp4 is NOT a proprietary container of Apple Quicktime.
Quicktime use this extension for the AAC sound files and MediaCenter is wrong in supposing any file with .mp4 extension is a Quicktime sound file.
MPEG4 is a compression format developed by two Groups, the MPEG (Moving Pictures Experts Group) from ISO and the VCEG (Video Coding Experts Group) from ITU (International Telecommunication Union).
http://forum.doom9.org/showthread.php?t=96059Nero is perfectly right in using .mp4 container for the video files, H263 or H264 AVC compression.
It is perfectly possible to play Nero files in WMP (just a codec problem).
But the problem is IN Mediacenter code which supposes any file with .mp4 extension or mp4 code is a quicktime file (and worse a sound file).
Quicktime implementation of mpeg4 is very poor (see the size of quicktime files
and H264 AVC Mpeg4 implementation in Quicktime 7 is properly scandalous ! (it is under the baseline profile).
Anyway, Quicktime is unable to read real mpeg4 H264 files (as compressed by Mainconcept coder, Nero coder etc... in baseline or main profile)
The workaround proposed : rename .mp4 in .avi is a bad solution. AVI container misses essentials informations about mpeg4 format.
So the solution is in mediacenter itself : remove mp4 as quicktime proprietary format. Please
Friendly
Pegase64