I have fixed this bug on my pandaboard by re-compiling the mplayer2 package from source.
fix: apt-get build-dep mplayer2 apt-get source mplayer2 cd mplayer2-2.0-134-g84d8671 dpkg-buildpackage cd .. dpkg -i mplayer2_2.0-134-g84d8671-2build1_armel.deb
... replacing mplayer2 2.0-134-g84d8671-2build1 (med mplayer2_2.0-134-g84d8671-2build1_armel.deb) ...
Now mplayer I\ Am\ Legend\ -\ Trailer.mp4 = OK
I have fixed this bug on my pandaboard by re-compiling the mplayer2 package from source.
fix: 2.0-134- g84d8671 2.0-134- g84d8671- 2build1_ armel.deb
apt-get build-dep mplayer2
apt-get source mplayer2
cd mplayer2-
dpkg-buildpackage
cd ..
dpkg -i mplayer2_
... replacing mplayer2 2.0-134- g84d8671- 2build1 (med mplayer2_ 2.0-134- g84d8671- 2build1_ armel.deb) ...
Now
mplayer I\ Am\ Legend\ -\ Trailer.mp4 = OK