WARNING!!! 
This patch is only alfa version now. 
Please send bug reports to max@linuxmedialabs.com 
Thanks.

You MUST use MPlayer v 0.90 !!! 

Patch instructions:

untar original MPlayer-0.90.tar.bz2

$ tar xvjf MPlayer-0.90.tar.bz2

copy patch to MPlayer-0.90 directory

$ cp MPlayer-0.90-lmlm4.patch.bz2 MPlayer-0.90
$ cd MPlayer-0.90

apply patch

$ bzcat MPlayer-0.90-lmlm4.patch.bz2 | patch -Np1

compile & install mplayer

$ ./configure && make
$ su 
# make install
# exit


Playing ___RAW___ LMLM4 stream

$ mplayer -demuxer 29 -fps <fps> <file>

don't forget to specify fps and demuxer !!! it's very important!

You can directly play back from /dev/mvideo/stream (NTSC example)

$ mplayer -demuxer 29 -cache 2000 -fps 29.97 - < /dev/mvideo/stream