Hi,
> Howdy, when I play WMV files (Protected or Not) in WMP11 mfpmp.exe
> starts off taking about 20% of the cpu but as the file plays it starts
> taking more and more until it hit's 80% usage and by then the player is
> going so slowly I have to close it.
>
> It plays all other format's with no problems.
>
> I can play WMV in other players without any issue's just not in WMP11.
>
> Have now removed all codec packs that were installed and all other
> media players but still have the problem.
>
> Could anybody help. Tried to reinstall WMP11 but keep getting the
> message at the start stating that my player is newer than the one I am
> trying to install, got the download from MSFT.
>
> So can anyone help with this problem?
>
> Thanks in advance. 
You described an interesting effect I also discovered here on my German
Vista Ultimate, playing several MP3 files. What I found out:
* mfpmp.exe is part of the Media Foundation Protection
* on most audio files, mfpmp.exe is consuming up to 10 % CPU load
* on MP3 files, encoded with Gogo (above 3) Codec, the load jumps up to
50-60%
playing such files causing a "stutterin" sound
* if I play such files in Media Player Classics, mfpmp.exe is gone and the
sound is ok
* if I convert the stuttering MP3 file using Audacity and Lame, the
resulting MP3 file plays fine in WMP11 at least
One other curiosity: This behavior is user account specific. If I run the
mp3 file on an other account on the same maschine, everything is ok. Also
copying the mp3 file to another machine results in a fine play. As a
conclusion, it can't be influenced by a "codec" or DirectShow Filter AFAIK.
The only explanation I found for me: Something within the file might be
"wrong", so WMP 11 "think" the media is drm protected and tries to "scale
down" the audio-data to a "lower quality". And this conversion will eat 50
to 70% of your CPU load. Maybe I'm wrong with my explanation - but it's the
only clue I could find.
Any other thoughts welcome.
G. Born