Using the configure option --enable-nonfree makes the resulting binary unredistributable.
There are certain libraries you can combine with FFmpeg whose licenses are not
compatible with the GPL and/or the LGPL. If you wish to enable these
libraries, even in circumstances that their license may be incompatible, pass
-`--enable-nonfree` to configure. But note that if you enable any of these
-libraries the resulting binary will be under a complex license mix that is
-more restrictive than the LGPL and that may result in additional obligations.
-It is possible that these restrictions cause the resulting binary to be
+`--enable-nonfree` to configure. This will cause the resulting binary to be
unredistributable.
The Fraunhofer FDK AAC and OpenSSL libraries are under licenses which are