Legal

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions, and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions, and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the names of the copyright holders nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Portions of this software are copyright (in alphabetical order):

Copyright (c) 2004-2020 Darby Johnston, All rights reserved
Copyright (c) 2008-2009 Mikael Sundell, All rights reserved
Copyright (c) 2019 Kent Oberheu, All rights reserved

This software is based in part on the works of (in alphabetical order):

FFmpeg, Licensed under the LGPLv2.1
FreeType, Copyright (C) 2006-2020 by David Turner, Robert Wilhelm, and Werner Lemberg
GLFW, Copyright (c) 2002-2006 Marcus Geelnard, Copyright (c) 2006-2019 Camilla Löwy
OpenEXR, Copyright (c) 2006, Industrial Light and Magic, a division of Lucasfilm Entertainment Company Ltd.
curl, Copyright (c) 1996 - 2019, Daniel Stenberg, , and many contributors, see the THANKS file.
dr_libs, David Reid
libpng, Copyright (c) 1995-2019 The PNG Reference Library Authors, Copyright (c) 2018-2019 Cosmin Truta, Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson, Copyright (c) 1996-1997 Andreas Dilger, Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
libtiff, Copyright (c) 1988-1997 Sam Leffler, Copyright (c) 1991-1997 Silicon Graphics, Inc

Trademarks named in the documentation (in alphabetical order):

Apple, macOS, ProRes, and QuickTime are registered trademarks of Apple, Inc.
AMD and ATI are registered trademarks of Advanced Micro Devices, Inc.
Autodesk, Inferno, Maya, Softimage, and XSI are registered trademarks of Autodesk, Inc.
Debian is a registered trademark of Software in the Public Interest, Inc.
FFmpeg is a trademark of Fabrice Bellard, originator of the FFmpeg project
FreeBSD is a registered trademark of The FreeBSD Foundation
GITHUB®, the GITHUB® logo design, OCTOCAT® and the OCTOCAT® logo design are exclusive trademarks registered in the United States by GitHub, Inc.
Intel is a registered trademark of Intel Corporation
Industrial Light and Magic and ILM are registered trademarks of Lucasfilm Ltd.
Kodak and Cineon are a registered trademarks of the Eastman Kodak Company
Linux is a registered trademark of Linus Torvalds
Microsoft, Microsoft Windows, Azure, and Visual Studio are registered trademarks of Microsoft, Inc.
MIPS is a registered trademark of MIPS Technologies, Inc.
NVIDIA is a registered trademark of NVIDIA Corporation
Red Hat and Fedora are registered trademarks of Red Hat, Inc.
Rhinoceros is a registered trademark of Robert McNeel & Associates
Silicon Graphics, SGI, IRIX, and OpenGL are registered trademarks of Silicon Graphics International Corp.
SMPTE is a registered trademark of the Society of Motion Picture and Television Engineers
SourceForge.net is a registered trademark of VA Software Corporation
SuSE is a registered trademark of Novell, Inc.
Ubuntu is a registered trademark of Canonical Ltd.
UNIX is a registered trademark of The Open Group