[MPlayer-users] Mplayer not fully Free/GPL software?! eventhough the webpage says

[Diego Biurrun]

Clemens Wächter writes:
 > IANAL, but looks like this file does not conform to the OpenDivX license
 > since it does not information about what and when changed, and it does
 > not contain a proper reference to the license.

Probably yes.  In any case it is a complete licensing mess that should
be resolved as soon as possible.

 > One reason more to reimplement it...

This was discussed several times on dev-eng, here is one of the
threads on the subject:

http://www.mplayerhq.hu/pipermail/mplayer-dev-eng/2002-April/007279.html

Christoph Lampert did plan to reimplement this file some time ago

http://mplayerhq.hu/pipermail/mplayer-dev-eng/2002-May/007948.html

but he does not seem to have made much progress.  You may try to
contact him at chl at math.uni-bonn.de or gruel at gmx.de, maybe he started
it in the meantime or may otherwise help you.
Good luck

Diego