ffmpeg is an open-source cross-platform video and audio editing tool.
http://ffmpeg.org/
It is used in Bizhawk to provide various services to the MultiClient and the DiscoHawk applications.
The particular build included here can be found at:
http://ffmpeg.zeranoe.com/builds/
The license for ffmpeg is reproduced below.
ffmpeg is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ffmpeg is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with ffmpeg. If not, see <http://www.gnu.org/licenses/>.
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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The hypothetical commands `show w' and `show c' should show the appropriate
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into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
