From Around The Web: The ffmpeg libav Situation

Quite a nice little perspective on what the situation looked and looks like recently between the ffmpeg and libav camps.  libav was created as a fork aside from ffmpeg, and has met both opposition and praise from some.  It really depends on how you came across either.  For me, I have always known ffmpeg since I heard about it around 2006, and it serves me well.  However, some developers prefer otherwise.  Be sure to hit up the source link for more.

Source: 
http://blog.pkh.me/p/13-the-ffmpeg-libav-situation.html