Mac update: I just tested the latest version on Mac and it can be made to work with small changes.
I know these steps are not suitable for all Mac users, but maybe an installable package will come later as a result of this.
I used OSX Mavericks with the system python. Assuming you have git and the command line compiler....clone the source code.
Install pyOpenGL like this:
sudo easy_install pip && sudo pip install pyOpenGL
You should already have numpy installed (I did, and I hadn't installed it myself).
Then you need to edit setup.py to remove the 2 openmp references. Clang does not yet support openmp (maybe there is a way to use gcc instead and hence get openmp and faster CPU demosaicing - I'm not sure).
python setup.py build
ln -s build/lib.macosx-10.9-intel-2.7/bitunpack.so .
Download ffmpeg static binary from http://www.evermeet.cx/ffmpeg/
7z x ffmpeg-22.214.171.124z
(if you need 7z, use homebrew and "brew install p7zip")
Finally from the source dir:
python mlrawviewer.py /Volumes/RAWVIDEOS/M01-2345.MLV MyEncodedFilm.MOV
I was able to encode a ProRes MOV and play it back fine with Quicktime.