.. highlight:: none

=======
License
=======

Most of Ren'Py is covered by the terms of the following (MIT) license:

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation files
    (the "Software"), to deal in the Software without restriction,
    including without limitation the rights to use, copy, modify, merge,
    publish, distribute, sublicense, and/or sell copies of the Software,
    and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Portions of Ren'Py are derived from source code that is licensed under the
GNU Lesser General Public License, so Ren'Py games must be distributed in a
manner that satisfies the LGPL.

Please see each individual source file for a list of copyright
holders. The artwork in the demo is released by various copyright
holders, under the same terms.

Ren'Py binaries can include source code from the following projects:

* ANGLE (Three clause BSD License)
* aom (AOM BSD License, Alliance for Open Media Patent License 1.0)
* brotli (MIT License)
* bzip2 (Bzip2 License)
* certifi (Mozilla Public License 2.0)
* chardet (GNU LGPL)
* charset-mormalizer (MIT License)
* ecdsa (MIT License)
* FFmpeg (GNU LGPL) (libav in some older versions, also GNU LGPL)
* Freetype (Zlib License)
* Fribidi (GNU LGPL)
* future (MIT License)
* GLEW (Modified BSD, MIT License)
* harfbuzz (Old MIT License)
* idna (BSD 3-Clause License)
* libavif (AOM BSD License)
* libffi (MIT License)
* libhydrogen (ISC License)
* libjpeg-turbo (IJG License, Modified BSD License, Zlib License)
* libpng (PNG License)
* libusb (GNU LGPL)
* libwebp (Modified BSD License, Patent License)
* libyuv (Three clause BSD License)
* MetalAngle (Three clause BSD License)
* Open Asset Import Library (assimp) (Three Clause BSD License)
* pefile (MIT License)
* py2exe (MIT License)
* pyasn1 (Modified BSD License)
* Pygame_SDL2 (MIT License, GNU LGPL)
* pyjnius (MIT License)
* pyobjc (MIT License)
* pysocks (Three Clause BSD License)
* Python (Python License)
* requests (Apache License 2.0)
* rsa (Apache Lixense 2.0)
* SDL2_image (Zlib License)
* SDL2_ttf (Zlib License)
* SDL2 (Zlib License)
* six (MIT License)
* tinyfiledialogs (Zlib License)
* urllib3 (MIT License)
* urllib3 (MIT License)
* websockets (Three Clause BSD License)
* xz (Three clause BSD License)
* zlib (Zlib License)
* zsync (Artistic License)

For the purposes of LGPL compliance, all source code that Ren'Py depends
on is located in one of the following repositories:

* https://github.com/renpy/renpy (Ren'Py)
* https://github.com/renpy/pygame_sdl2 (Pygame_SDL2)
* https://github.com/renpy/renpy-build (Dependencies)
* https://github.com/renpy/renpyweb (Web)

Ren'Py Build will download source code from other git repositories
as needed.

And for releases before Ren'Py 7.4:

* https://github.com/renpy/renpy-deps (Desktop dependencies)
* https://github.com/renpy/python-for-android (Android)
* https://github.com/renpy/rapt (Android Build Tools)
* https://github.com/renpy/renios (iOS)

Although we are unable to provide legal advice, we believe compliance can be
achieved by including a copy of this license with every copy of Ren'Py you
distribute, and linking to this license from your project's README file or
App Store description. We suggest using the wording:

    This program contains free software licensed under a number of licenses,
    including the GNU Lesser General Public License. A complete list of software
    is available at http://www.renpy.org/doc/html/license.html.


GNU Lesser General Public License
=================================

::

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Python License
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 1. We don't promise that this software works.  (But if you find any bugs,
    please let us know!)
 2. You can use this software for whatever you want.  You don't have to pay us.
 3. You may not pretend that you wrote this software.  If you use it in a
    program, you must acknowledge somewhere in your documentation that
    you've used the IJG code.

 In legalese:

 The authors make NO WARRANTY or representation, either express or implied,
 with respect to this software, its quality, accuracy, merchantability, or
 fitness for a particular purpose.  This software is provided "AS IS", and you,
 its user, assume the entire risk as to its quality and accuracy.

 This software is copyright (C) 1991-1998, Thomas G. Lane.
 All Rights Reserved except as specified below.

 Permission is hereby granted to use, copy, modify, and distribute this
 software (or portions thereof) for any purpose, without fee, subject to these
 conditions:
 (1) If any part of the source code for this software is distributed, then this
 README file must be included, with this copyright and no-warranty notice
 unaltered; and any additions, deletions, or changes to the original files
 must be clearly indicated in accompanying documentation.
 (2) If only executable code is distributed, then the accompanying
 documentation must state that "this software is based in part on the work of
 the Independent JPEG Group".
 (3) Permission for use of this software is granted only if the user accepts
 full responsibility for any undesirable consequences; the authors accept
 NO LIABILITY for damages of any kind.

 These conditions apply to any software derived from or based on the IJG code,
 not just to the unmodified library.  If you use our work, you ought to
 acknowledge us.

 Permission is NOT granted for the use of any IJG author's name or company name
 in advertising or publicity relating to this software or products derived from
 it.  This software may be referred to only as "the Independent JPEG Group's
 software".

 We specifically permit and encourage the use of this software as the basis of
 commercial products, provided that all warranty or liability claims are
 assumed by the product vendor.


PNG License
===========

::

 The PNG Reference Library is supplied "AS IS".  The Contributing Authors
 and Group 42, Inc. disclaim all warranties, expressed or implied,
 including, without limitation, the warranties of merchantability and of
 fitness for any purpose.  The Contributing Authors and Group 42, Inc.
 assume no liability for direct, indirect, incidental, special, exemplary,
 or consequential damages, which may result from the use of the PNG
 Reference Library, even if advised of the possibility of such damage.

 Permission is hereby granted to use, copy, modify, and distribute this
 source code, or portions hereof, for any purpose, without fee, subject
 to the following restrictions:

 1. The origin of this source code must not be misrepresented.

 2. Altered versions must be plainly marked as such and must not
    be misrepresented as being the original source.

 3. This Copyright notice may not be removed or altered from any
    source or altered source distribution.

 The Contributing Authors and Group 42, Inc. specifically permit, without
 fee, and encourage the use of this source code as a component to
 supporting the PNG file format in commercial products.  If you use this
 source code in a product, acknowledgment is not required but would be
 appreciated.

Zlib License
============

::

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.


Bzip2 License
=============

::

 This program, "bzip2", the associated library "libbzip2", and all
 documentation, are copyright (C) 1996-2005 Julian R Seward.  All
 rights reserved.

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

 1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.

 2. The origin of this software must not be misrepresented; you must
    not claim that you wrote the original software.  If you use this
    software in a product, an acknowledgment in the product
    documentation would be appreciated but is not required.

 3. Altered source versions must be plainly marked as such, and must
    not be misrepresented as being the original software.

 4. The name of the author may not be used to endorse or promote
    products derived from this software without specific prior written
    permission.

 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''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 AUTHOR BE LIABLE FOR ANY
 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 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.

Modified BSD License
====================

::

 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.
 * The name of the author 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 OWNER OR CONTRIBUTORS BE
 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 SUBSTITUTE 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.


Artistic License
================

::

                              The Artistic License
                          Version 2.0beta4, October 2000

                          Copyright (C) 2000, Larry Wall.
         Everyone is permitted to copy and distribute verbatim copies
          of this license document, but changing it is not allowed.

                                   Preamble

 This copyright license states the terms under which a given free
 software Package may be copied, modified and/or redistributed, while the
 Originator(s) maintain some artistic control over the future development
 of that Package (at least as much artistic control as can be given under
 copyright law while still making the Package open source and free software).

 This license is bound by copyright law, and thus it legally applies only
 to works which the copyright holder has permitted copying, distribution
 or modification under the terms of the Artistic License, Version 2.0.

 You are reminded that You are always permitted to make arrangements
 wholly outside of a given copyright license directly with the copyright
 holder(s) of a given Package. If the terms of this license impede your
 ability to make full use of the Package, You are encouraged to contact
 the copyright holder(s) and seek a different licensing arrangement.

                                 Definitions

 "Package" refers to the collection of files distributed by the
 Originator(s), and derivatives of that collection of files created
 through textual modification.

 "Standard Version" refers to the Package if it has not been modified, or
 has been modified only in ways suggested by the Originator(s).

 "Modified Version" refers to the Package, if it has been changed by You
 via textual modification of the source code, and such changes were not
 suggested by the Originator(s).

 "Originator" refers to the author(s) and/or copyright holder(s) of the
 Standard Version of the Package.

 "You" and "Your" refers to any person who would like to copy,
 distribute, or modify the Package.

 "Distribution Fee" is any fee that You charge for providing a copy of
 this Package to another party. It does not refer to licensing fees.

 "Freely Available" means that:

        (a) no fee is charged for the right to use the item (though a
            Distribution Fee may be charged).

        (b) recipients of the item may redistribute it under the same
            conditions they received it.

        (c) If the item is a binary, object code, bytecode, the complete
            corresponding machine-readable source code is included with the
            item.


          Permission for Use and Modification Without Redistribution

   (1) You are permitted to use the Standard Version and create and use
       Modified Versions for any purpose without restriction, provided that
       you do not redistribute the Modified Version to others outside of your
       company or organization.


            Permissions for Redistribution of the Standard Version

   (2) You may make available verbatim copies of the source code of the
       Standard Version of this Package in any medium without restriction,
       either gratis or for a Distribution Fee, provided that you duplicate
       all of the original copyright notices and associated disclaimers.  At
       Your discretion, such verbatim copies may or may not include compiled
       bytecode, object code or binary versions of the corresponding source
       code in the same medium.

   (3) You may apply any bug fixes, portability changes, and other
       modifications made available from any of the Originator(s).  The
       resulting modified Package will still be considered the Standard
       Version, and may be copied, modified and redistributed under the terms
       of the original license of the Standard Version as if it were the
       Standard Version.


  Permissions for Redistribution of Modified Versions of the Package as Source

   (4) You may modify your copy of the source code of this Package in any way
       and distribute that Modified Version (either gratis or for a
       Distribution Fee, and with or without a corresponding binary, bytecode
       or object code version of the Modified Version) provided that You
       clearly indicate what changes You made to the Package, and provided
       that You do at least ONE of the following:

        (a) make the Modified Version available to the Originator(s) of the
            Standard Version, under the exact license of the Standard
            Version, so that the Originator(s) may include your modifications
            into the Standard Version (at their discretion).

        (b) modify any installation scripts and procedures so that
            installation of the Modified Version will never conflict with an
            installation of the Standard Version, include for each program
            installed by the Modified Version clear documentation describing
            how it differs from the Standard Version, and rename your
            Modified Version so that the name is substantially different from
            the Standard Version.

        (c) permit and encourage anyone who receives a copy of the Modified
            Version permission to make your modifications Freely Available in
            some specific way.

       If Your Modified Version is in turn derived from a Modified Version
       made by a third party, then You are still required to ensure that Your
       Modified Version complies with the requirements of this license.


       Permissions for Redistribution of Non-Source Versions of Package

   (5) You may distribute binary, object code, bytecode or other non-source
       versions of the Standard Version of the Package, provided that you
       include complete instructions on where to get the source code of the
       Standard Version.  Such instructions must be valid at the time of Your
       distribution.  If these instructions, at any time while You are
       carrying our such distribution, become invalid, you must provide new
       instructions on demand or cease further distribution.  If You cease
       distribution within thirty days after You become aware that the
       instructions are invalid, then You do not forfeit any of Your rights
       under this license.

   (6) You may distribute binary, object code, bytecode or other non-source
       versions of a Modified Version provided that You do at least ONE of
       the following:

        (a) include a copy of the corresponding source code for the Modified
            Version under the terms indicated in (4).

        (b) ensure that the installation of Your non-source Modified Version
            does not conflict in any way with an installation of the Standard
            Version, include for each program installed by the Modified
            Version clear documentation describing how it differs from the
            Standard Version, and rename your Modified Version so that the
            name is substantially different from the Standard Version.

        (c) ensure that the Modified Version includes notification of the
            changes made from the Standard Version, and offer to provide
            machine-readable source code (under a license that permits making
            that source code Freely Available) of the Modified Version via
            mail order.


         Permissions for Inclusion of the Package in Aggregate Works

   (7) You may aggregate this Package (either the Standard Version or
       Modified Version) with other packages and distribute the resulting
       aggregation provided that You do not charge a licensing fee for the
       Package.  Distribution Fees are permitted, and licensing fees for
       other packages in the aggregation are permitted.  Your permission to
       distribute Standard or Modified Versions of the Package is still
       subject to the other terms set forth in other sections of this
       license.

   (8) In addition to the permissions given elsewhere by this license, You
       are also permitted to link Modified and Standard Versions of this
       Package with other works and distribute the result without
       restriction, provided You have produced binary program(s) that do not
       overtly expose the interfaces of the Package.  This includes
       permission to embed the Package in a larger work of your own without
       exposing a direct interface to the Package.  This also includes
       permission to build stand-alone binary or bytecode versions of your
       scripts that require the Package, but do not otherwise give the casual
       user direct access to the Package itself.


         Items That are Never Considered Part of a Modified Version Package

   (9) Works (including, but not limited to, subroutines and scripts) that
       you have linked or aggregated with the Package that merely extend or
       make use of the Package, but are not intended to cause the Package to
       operate differently from the Standard Version, do not, by themselves,
       cause the Package to be a Modified Version.  In addition, such works
       are not considered parts of the Package itself, and are not bound by
       the terms of the Package's license.


               Acceptance of License and Disclaimer of Warranty

  (10) You are not required to accept this License, since you have not signed
       it.  However, nothing else grants you permission to copy, modify or
       distribute the Standard or Modified Versions of the Package.  These
       actions are prohibited by copyright law if you do not accept this
       License.  Therefore, by copying, modifying or distributing Standard
       and Modified Versions of the Package, you indicate your acceptance of
       the license of the Package.


  (11) Disclaimer of Warranty:

        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 UNLESS REQUIRED BY
        LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER OR CONTRIBUTOR
        BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
        OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
        OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 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.

Apache License 2.0
------------------

::

                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the
      direction or management of such entity, whether by contract or
      otherwise, or (ii) ownership of fifty percent (50%) or more of the
      outstanding shares, or (iii) beneficial ownership of such entity.

      "You" (or "Your") shall mean an individual or Legal Entity
      exercising permissions granted by this License.

      "Source" form shall mean the preferred form for making modifications,
      including but not limited to software source code, documentation
      source, and configuration files.

      "Object" form shall mean any form resulting from mechanical
      transformation or translation of a Source form, including but
      not limited to compiled object code, generated documentation,
      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain
      separable from, or merely link (or bind by name) to the interfaces of,
      the Work and Derivative Works thereof.

      "Contribution" shall mean any work of authorship, including
      the original version of the Work and any modifications or additions
      to that Work or Derivative Works thereof, that is intentionally
      submitted to Licensor for inclusion in the Work by the copyright owner
      or by an individual or Legal Entity authorized to submit on behalf of
      the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent
      to the Licensor or its representatives, including but not limited to
      communication on electronic mailing lists, source code control systems,
      and issue tracking systems that are managed by, or on behalf of, the
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      designated in writing by the copyright owner as "Not a Contribution."

      "Contributor" shall mean Licensor and any individual or Legal Entity
      on behalf of whom a Contribution has been received by Licensor and
      subsequently incorporated within the Work.

   2. Grant of Copyright License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      copyright license to reproduce, prepare Derivative Works of,
      publicly display, publicly perform, sublicense, and distribute the
      Work and such Derivative Works in Source or Object form.

   3. Grant of Patent License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      (except as stated in this section) patent license to make, have made,
      use, offer to sell, sell, import, and otherwise transfer the Work,
      where such license applies only to those patent claims licensable
      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)
      with the Work to which such Contribution(s) was submitted. If You
      institute patent litigation against any entity (including a
      cross-claim or counterclaim in a lawsuit) alleging that the Work
      or a Contribution incorporated within the Work constitutes direct
      or contributory patent infringement, then any patent licenses
      granted to You under this License for that Work shall terminate
      as of the date such litigation is filed.

   4. Redistribution. You may reproduce and distribute copies of the
      Work or Derivative Works thereof in any medium, with or without
      modifications, and in Source or Object form, provided that You
      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and
          attribution notices from the Source form of the Work,
          excluding those notices that do not pertain to any part of
          the Derivative Works; and

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed
          as part of the Derivative Works; within the Source form or
          documentation, if provided along with the Derivative Works; or,
          within a display generated by the Derivative Works, if and
          wherever such third-party notices normally appear. The contents
          of the NOTICE file are for informational purposes only and
          do not modify the License. You may add Your own attribution
          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions
      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work
      by You to the Licensor shall be under the terms and conditions of
      this License, without any additional terms or conditions.
      Notwithstanding the above, nothing herein shall supersede or modify
      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the
      origin of the Work and reproducing the content of the NOTICE file.

   7. Disclaimer of Warranty. Unless required by applicable law or
      agreed to in writing, Licensor provides the Work (and each
      Contributor provides its Contributions) on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
      implied, including, without limitation, any warranties or conditions
      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
      PARTICULAR PURPOSE. You are solely responsible for determining the
      appropriateness of using or redistributing the Work and assume any
      risks associated with Your exercise of permissions under this License.

   8. Limitation of Liability. In no event and under no legal theory,
      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

   9. Accepting Warranty or Additional Liability. While redistributing
      the Work or Derivative Works thereof, You may choose to offer,
      and charge a fee for, acceptance of support, warranty, indemnity,
      or other liability obligations and/or rights consistent with this
      License. However, in accepting such obligations, You may act only
      on Your own behalf and on Your sole responsibility, not on behalf
      of any other Contributor, and only if You agree to indemnify,
      defend, and hold each Contributor harmless for any liability
      incurred by, or claims asserted against, such Contributor by reason
      of your accepting any such warranty or additional liability.

   END OF TERMS AND CONDITIONS

   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
      boilerplate notice, with the fields enclosed by brackets "[]"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

   Copyright [yyyy] [name of copyright owner]

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

Mozilla Public License 2.0
--------------------------

::

    Mozilla Public License Version 2.0
    ==================================

    1. Definitions
    --------------

    1.1. "Contributor"
        means each individual or legal entity that creates, contributes to
        the creation of, or owns Covered Software.

    1.2. "Contributor Version"
        means the combination of the Contributions of others (if any) used
        by a Contributor and that particular Contributor's Contribution.

    1.3. "Contribution"
        means Covered Software of a particular Contributor.

    1.4. "Covered Software"
        means Source Code Form to which the initial Contributor has attached
        the notice in Exhibit A, the Executable Form of such Source Code
        Form, and Modifications of such Source Code Form, in each case
        including portions thereof.

    1.5. "Incompatible With Secondary Licenses"
        means

        (a) that the initial Contributor has attached the notice described
            in Exhibit B to the Covered Software; or

        (b) that the Covered Software was made available under the terms of
            version 1.1 or earlier of the License, but not also under the
            terms of a Secondary License.

    1.6. "Executable Form"
        means any form of the work other than Source Code Form.

    1.7. "Larger Work"
        means a work that combines Covered Software with other material, in
        a separate file or files, that is not Covered Software.

    1.8. "License"
        means this document.

    1.9. "Licensable"
        means having the right to grant, to the maximum extent possible,
        whether at the time of the initial grant or subsequently, any and
        all of the rights conveyed by this License.

    1.10. "Modifications"
        means any of the following:

        (a) any file in Source Code Form that results from an addition to,
            deletion from, or modification of the contents of Covered
            Software; or

        (b) any new file in Source Code Form that contains any Covered
            Software.

    1.11. "Patent Claims" of a Contributor
        means any patent claim(s), including without limitation, method,
        process, and apparatus claims, in any patent Licensable by such
        Contributor that would be infringed, but for the grant of the
        License, by the making, using, selling, offering for sale, having
        made, import, or transfer of either its Contributions or its
        Contributor Version.

    1.12. "Secondary License"
        means either the GNU General Public License, Version 2.0, the GNU
        Lesser General Public License, Version 2.1, the GNU Affero General
        Public License, Version 3.0, or any later versions of those
        licenses.

    1.13. "Source Code Form"
        means the form of the work preferred for making modifications.

    1.14. "You" (or "Your")
        means an individual or a legal entity exercising rights under this
        License. For legal entities, "You" includes any entity that
        controls, is controlled by, or is under common control with You. For
        purposes of this definition, "control" means (a) the power, direct
        or indirect, to cause the direction or management of such entity,
        whether by contract or otherwise, or (b) ownership of more than
        fifty percent (50%) of the outstanding shares or beneficial
        ownership of such entity.

    2. License Grants and Conditions
    --------------------------------

    2.1. Grants

    Each Contributor hereby grants You a world-wide, royalty-free,
    non-exclusive license:

    (a) under intellectual property rights (other than patent or trademark)
        Licensable by such Contributor to use, reproduce, make available,
        modify, display, perform, distribute, and otherwise exploit its
        Contributions, either on an unmodified basis, with Modifications, or
        as part of a Larger Work; and

    (b) under Patent Claims of such Contributor to make, use, sell, offer
        for sale, have made, import, and otherwise transfer either its
        Contributions or its Contributor Version.

    2.2. Effective Date

    The licenses granted in Section 2.1 with respect to any Contribution
    become effective for each Contribution on the date the Contributor first
    distributes such Contribution.

    2.3. Limitations on Grant Scope

    The licenses granted in this Section 2 are the only rights granted under
    this License. No additional rights or licenses will be implied from the
    distribution or licensing of Covered Software under this License.
    Notwithstanding Section 2.1(b) above, no patent license is granted by a
    Contributor:

    (a) for any code that a Contributor has removed from Covered Software;
        or

    (b) for infringements caused by: (i) Your and any other third party's
        modifications of Covered Software, or (ii) the combination of its
        Contributions with other software (except as part of its Contributor
        Version); or

    (c) under Patent Claims infringed by Covered Software in the absence of
        its Contributions.

    This License does not grant any rights in the trademarks, service marks,
    or logos of any Contributor (except as may be necessary to comply with
    the notice requirements in Section 3.4).

    2.4. Subsequent Licenses

    No Contributor makes additional grants as a result of Your choice to
    distribute the Covered Software under a subsequent version of this
    License (see Section 10.2) or under the terms of a Secondary License (if
    permitted under the terms of Section 3.3).

    2.5. Representation

    Each Contributor represents that the Contributor believes its
    Contributions are its original creation(s) or it has sufficient rights
    to grant the rights to its Contributions conveyed by this License.

    2.6. Fair Use

    This License is not intended to limit any rights You have under
    applicable copyright doctrines of fair use, fair dealing, or other
    equivalents.

    2.7. Conditions

    Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
    in Section 2.1.

    3. Responsibilities
    -------------------

    3.1. Distribution of Source Form

    All distribution of Covered Software in Source Code Form, including any
    Modifications that You create or to which You contribute, must be under
    the terms of this License. You must inform recipients that the Source
    Code Form of the Covered Software is governed by the terms of this
    License, and how they can obtain a copy of this License. You may not
    attempt to alter or restrict the recipients' rights in the Source Code
    Form.

    3.2. Distribution of Executable Form

    If You distribute Covered Software in Executable Form then:

    (a) such Covered Software must also be made available in Source Code
        Form, as described in Section 3.1, and You must inform recipients of
        the Executable Form how they can obtain a copy of such Source Code
        Form by reasonable means in a timely manner, at a charge no more
        than the cost of distribution to the recipient; and

    (b) You may distribute such Executable Form under the terms of this
        License, or sublicense it under different terms, provided that the
        license for the Executable Form does not attempt to limit or alter
        the recipients' rights in the Source Code Form under this License.

    3.3. Distribution of a Larger Work

    You may create and distribute a Larger Work under terms of Your choice,
    provided that You also comply with the requirements of this License for
    the Covered Software. If the Larger Work is a combination of Covered
    Software with a work governed by one or more Secondary Licenses, and the
    Covered Software is not Incompatible With Secondary Licenses, this
    License permits You to additionally distribute such Covered Software
    under the terms of such Secondary License(s), so that the recipient of
    the Larger Work may, at their option, further distribute the Covered
    Software under the terms of either this License or such Secondary
    License(s).

    3.4. Notices

    You may not remove or alter the substance of any license notices
    (including copyright notices, patent notices, disclaimers of warranty,
    or limitations of liability) contained within the Source Code Form of
    the Covered Software, except that You may alter any license notices to
    the extent required to remedy known factual inaccuracies.

    3.5. Application of Additional Terms

    You may choose to offer, and to charge a fee for, warranty, support,
    indemnity or liability obligations to one or more recipients of Covered
    Software. However, You may do so only on Your own behalf, and not on
    behalf of any Contributor. You must make it absolutely clear that any
    such warranty, support, indemnity, or liability obligation is offered by
    You alone, and You hereby agree to indemnify every Contributor for any
    liability incurred by such Contributor as a result of warranty, support,
    indemnity or liability terms You offer. You may include additional
    disclaimers of warranty and limitations of liability specific to any
    jurisdiction.

    4. Inability to Comply Due to Statute or Regulation
    ---------------------------------------------------

    If it is impossible for You to comply with any of the terms of this
    License with respect to some or all of the Covered Software due to
    statute, judicial order, or regulation then You must: (a) comply with
    the terms of this License to the maximum extent possible; and (b)
    describe the limitations and the code they affect. Such description must
    be placed in a text file included with all distributions of the Covered
    Software under this License. Except to the extent prohibited by statute
    or regulation, such description must be sufficiently detailed for a
    recipient of ordinary skill to be able to understand it.

    5. Termination
    --------------

    5.1. The rights granted under this License will terminate automatically
    if You fail to comply with any of its terms. However, if You become
    compliant, then the rights granted under this License from a particular
    Contributor are reinstated (a) provisionally, unless and until such
    Contributor explicitly and finally terminates Your grants, and (b) on an
    ongoing basis, if such Contributor fails to notify You of the
    non-compliance by some reasonable means prior to 60 days after You have
    come back into compliance. Moreover, Your grants from a particular
    Contributor are reinstated on an ongoing basis if such Contributor
    notifies You of the non-compliance by some reasonable means, this is the
    first time You have received notice of non-compliance with this License
    from such Contributor, and You become compliant prior to 30 days after
    Your receipt of the notice.

    5.2. If You initiate litigation against any entity by asserting a patent
    infringement claim (excluding declaratory judgment actions,
    counter-claims, and cross-claims) alleging that a Contributor Version
    directly or indirectly infringes any patent, then the rights granted to
    You by any and all Contributors for the Covered Software under Section
    2.1 of this License shall terminate.

    5.3. In the event of termination under Sections 5.1 or 5.2 above, all
    end user license agreements (excluding distributors and resellers) which
    have been validly granted by You or Your distributors under this License
    prior to termination shall survive termination.

    ************************************************************************
    *                                                                      *
    *  6. Disclaimer of Warranty                                           *
    *  -------------------------                                           *
    *                                                                      *
    *  Covered Software is provided under this License on an "as is"       *
    *  basis, without warranty of any kind, either expressed, implied, or  *
    *  statutory, including, without limitation, warranties that the       *
    *  Covered Software is free of defects, merchantable, fit for a        *
    *  particular purpose or non-infringing. The entire risk as to the     *
    *  quality and performance of the Covered Software is with You.        *
    *  Should any Covered Software prove defective in any respect, You     *
    *  (not any Contributor) assume the cost of any necessary servicing,   *
    *  repair, or correction. This disclaimer of warranty constitutes an   *
    *  essential part of this License. No use of any Covered Software is   *
    *  authorized under this License except under this disclaimer.         *
    *                                                                      *
    ************************************************************************

    ************************************************************************
    *                                                                      *
    *  7. Limitation of Liability                                          *
    *  --------------------------                                          *
    *                                                                      *
    *  Under no circumstances and under no legal theory, whether tort      *
    *  (including negligence), contract, or otherwise, shall any           *
    *  Contributor, or anyone who distributes Covered Software as          *
    *  permitted above, be liable to You for any direct, indirect,         *
    *  special, incidental, or consequential damages of any character      *
    *  including, without limitation, damages for lost profits, loss of    *
    *  goodwill, work stoppage, computer failure or malfunction, or any    *
    *  and all other commercial damages or losses, even if such party      *
    *  shall have been informed of the possibility of such damages. This   *
    *  limitation of liability shall not apply to liability for death or   *
    *  personal injury resulting from such party's negligence to the       *
    *  extent applicable law prohibits such limitation. Some               *
    *  jurisdictions do not allow the exclusion or limitation of           *
    *  incidental or consequential damages, so this exclusion and          *
    *  limitation may not apply to You.                                    *
    *                                                                      *
    ************************************************************************

    8. Litigation
    -------------

    Any litigation relating to this License may be brought only in the
    courts of a jurisdiction where the defendant maintains its principal
    place of business and such litigation shall be governed by laws of that
    jurisdiction, without reference to its conflict-of-law provisions.
    Nothing in this Section shall prevent a party's ability to bring
    cross-claims or counter-claims.

    9. Miscellaneous
    ----------------

    This License represents the complete agreement concerning the subject
    matter hereof. If any provision of this License is held to be
    unenforceable, such provision shall be reformed only to the extent
    necessary to make it enforceable. Any law or regulation which provides
    that the language of a contract shall be construed against the drafter
    shall not be used to construe this License against a Contributor.

    10. Versions of the License
    ---------------------------

    10.1. New Versions

    Mozilla Foundation is the license steward. Except as provided in Section
    10.3, no one other than the license steward has the right to modify or
    publish new versions of this License. Each version will be given a
    distinguishing version number.

    10.2. Effect of New Versions

    You may distribute the Covered Software under the terms of the version
    of the License under which You originally received the Covered Software,
    or under the terms of any subsequent version published by the license
    steward.

    10.3. Modified Versions

    If you create software not governed by this License, and you want to
    create a new license for such software, you may create and use a
    modified version of this License if you rename the license and remove
    any references to the name of the license steward (except to note that
    such modified license differs from this License).

    10.4. Distributing Source Code Form that is Incompatible With Secondary
    Licenses

    If You choose to distribute Source Code Form that is Incompatible With
    Secondary Licenses under the terms of this version of the License, the
    notice described in Exhibit B of this License must be attached.

    Exhibit A - Source Code Form License Notice
    -------------------------------------------

      This Source Code Form is subject to the terms of the Mozilla Public
      License, v. 2.0. If a copy of the MPL was not distributed with this
      file, You can obtain one at http://mozilla.org/MPL/2.0/.

    If it is not possible or desirable to put the notice in a particular
    file, then You may include the notice in a location (such as a LICENSE
    file in a relevant directory) where a recipient would be likely to look
    for such a notice.

    You may add additional accurate notices of copyright ownership.

    Exhibit B - "Incompatible With Secondary Licenses" Notice
    ---------------------------------------------------------

      This Source Code Form is "Incompatible With Secondary Licenses", as
      defined by the Mozilla Public License, v. 2.0.

Libwebp Licenses
================

::

    Copyright (c) 2010, Google Inc. All rights reserved.

    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 name of Google nor the names of its 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 SUBSTITUTE 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.

::

    "These implementations" means the copyrightable works that implement the WebM
    codecs distributed by Google as part of the WebM Project.

    Google hereby grants to you a perpetual, worldwide, non-exclusive, no-charge,
    royalty-free, irrevocable (except as stated in this section) patent license to
    make, have made, use, offer to sell, sell, import, transfer, and otherwise
    run, modify and propagate the contents of these implementations of WebM, where
    such license applies only to those patent claims, both currently owned by
    Google and acquired in the future, licensable by Google that are necessarily
    infringed by these implementations of WebM. This grant does not include claims
    that would be infringed only as a consequence of further modification of these
    implementations. If you or your agent or exclusive licensee institute or order
    or agree to the institution of patent litigation or any other patent
    enforcement activity against any entity (including a cross-claim or
    counterclaim in a lawsuit) alleging that any of these implementations of WebM
    or any code incorporated within any of these implementations of WebM
    constitute direct or contributory patent infringement, or inducement of
    patent infringement, then any patent rights granted to you under this License
    for these implementations of WebM shall terminate as of the date such
    litigation is filed.


AOM BSD License
===============

::

    Copyright (c) 2016, Alliance for Open Media. All rights reserved.
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:

    1. Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.

    2. 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.

    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 SUBSTITUTE 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.


Alliance for Open Media Patent License 1.0
==========================================

::

    1. License Terms.

    1.1. Patent License. Subject to the terms and conditions of this License, each
         Licensor, on behalf of itself and successors in interest and assigns,
         grants Licensee a non-sublicensable, perpetual, worldwide, non-exclusive,
         no-charge, royalty-free, irrevocable (except as expressly stated in this
         License) patent license to its Necessary Claims to make, use, sell, offer
         for sale, import or distribute any Implementation.

    1.2. Conditions.

    1.2.1. Availability. As a condition to the grant of rights to Licensee to make,
           sell, offer for sale, import or distribute an Implementation under
           Section 1.1, Licensee must make its Necessary Claims available under
           this License, and must reproduce this License with any Implementation
           as follows:
           a. For distribution in source code, by including this License in the
              root directory of the source code with its Implementation.
           b. For distribution in any other form (including binary, object form,
              and/or hardware description code (e.g., HDL, RTL, Gate Level Netlist,
              GDSII, etc.)), by including this License in the documentation, legal
              notices, and/or other written materials provided with the
              Implementation.

    1.2.2. Additional Conditions. This license is directly from Licensor to
           Licensee.  Licensee acknowledges as a condition of benefiting from it
           that no rights from Licensor are received from suppliers, distributors,
           or otherwise in connection with this License.

    1.3. Defensive Termination. If any Licensee, its Affiliates, or its agents
         initiates patent litigation or files, maintains, or voluntarily
         participates in a lawsuit against another entity or any person asserting
         that any Implementation infringes Necessary Claims, any patent licenses
         granted under this License directly to the Licensee are immediately
         terminated as of the date of the initiation of action unless 1) that suit
         was in response to a corresponding suit regarding an Implementation first
         brought against an initiating entity, or 2) that suit was brought to
         enforce the terms of this License (including intervention in a third-party
         action by a Licensee).

    1.4. Disclaimers. The Reference Implementation and Specification are provided
         "AS IS" and without warranty. The entire risk as to implementing or
         otherwise using the Reference Implementation or Specification is assumed
         by the implementer and user. Licensor expressly disclaims any warranties
         (express, implied, or otherwise), including implied warranties of
         merchantability, non-infringement, fitness for a particular purpose, or
         title, related to the material. IN NO EVENT WILL LICENSOR BE LIABLE TO
         ANY OTHER PARTY FOR LOST PROFITS OR ANY FORM OF INDIRECT, SPECIAL,
         INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY CHARACTER FROM ANY CAUSES OF
         ACTION OF ANY KIND WITH RESPECT TO THIS LICENSE, WHETHER BASED ON BREACH
         OF CONTRACT, TORT (INCLUDING NEGLIGENCE), OR OTHERWISE, AND WHETHER OR
         NOT THE OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    1. Definitions.

    2.1. Affiliate.  "Affiliate" means an entity that directly or indirectly
         Controls, is Controlled by, or is under common Control of that party.

    2.2. Control. "Control" means direct or indirect control of more than 50% of
         the voting power to elect directors of that corporation, or for any other
         entity, the power to direct management of such entity.

    2.3. Decoder.  "Decoder" means any decoder that conforms fully with all
         non-optional portions of the Specification.

    2.4. Encoder.  "Encoder" means any encoder that produces a bitstream that can
         be decoded by a Decoder only to the extent it produces such a bitstream.

    2.5. Final Deliverable.  "Final Deliverable" means the final version of a
         deliverable approved by the Alliance for Open Media as a Final
         Deliverable.

    2.6. Implementation.  "Implementation" means any implementation, including the
         Reference Implementation, that is an Encoder and/or a Decoder. An
         Implementation also includes components of an Implementation only to the
         extent they are used as part of an Implementation.

    2.7. License. "License" means this license.

    2.8. Licensee. "Licensee" means any person or entity who exercises patent
         rights granted under this License.

    2.9. Licensor.  "Licensor" means (i) any Licensee that makes, sells, offers
         for sale, imports or distributes any Implementation, or (ii) a person
         or entity that has a licensing obligation to the Implementation as a
         result of its membership and/or participation in the Alliance for Open
         Media working group that developed the Specification.

    2.10. Necessary Claims.  "Necessary Claims" means all claims of patents or
          patent applications, (a) that currently or at any time in the future,
          are owned or controlled by the Licensor, and (b) (i) would be an
          Essential Claim as defined by the W3C Policy as of February 5, 2004
          (https://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential)
          as if the Specification was a W3C Recommendation; or (ii) are infringed
          by the Reference Implementation.

    2.11. Reference Implementation. "Reference Implementation" means an Encoder
          and/or Decoder released by the Alliance for Open Media as a Final
          Deliverable.

    2.12. Specification. "Specification" means the specification designated by
          the Alliance for Open Media as a Final Deliverable for which this
          License was issued.

libavif Licenses
----------------

::

    Copyright 2019 Joe Drago. All rights reserved.

    Copyright © 2018-2019, VideoLAN and dav1d authors
    All rights reserved.

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

    1. Redistributions of source code must retain the above copyright notice, this
    list of conditions and the following disclaimer.

    2. 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.

    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 SUBSTITUTE 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.


IJG License
------------

::

    The authors make NO WARRANTY or representation, either express or implied,
    with respect to this software, its quality, accuracy, merchantability, or
    fitness for a particular purpose.  This software is provided "AS IS", and you,
    its user, assume the entire risk as to its quality and accuracy.

    This software is copyright (C) 1991-1998, Thomas G. Lane.
    All Rights Reserved except as specified below.

    Permission is hereby granted to use, copy, modify, and distribute this
    software (or portions thereof) for any purpose, without fee, subject to these
    conditions:
    (1) If any part of the source code for this software is distributed, then this
    README file must be included, with this copyright and no-warranty notice
    unaltered; and any additions, deletions, or changes to the original files
    must be clearly indicated in accompanying documentation.
    (2) If only executable code is distributed, then the accompanying
    documentation must state that "this software is based in part on the work of
    the Independent JPEG Group".
    (3) Permission for use of this software is granted only if the user accepts
    full responsibility for any undesirable consequences; the authors accept
    NO LIABILITY for damages of any kind.

    These conditions apply to any software derived from or based on the IJG code,
    not just to the unmodified library.  If you use our work, you ought to
    acknowledge us.

    Permission is NOT granted for the use of any IJG author's name or company name
    in advertising or publicity relating to this software or products derived from
    it.  This software may be referred to only as "the Independent JPEG Group's
    software".

    We specifically permit and encourage the use of this software as the basis of
    commercial products, provided that all warranty or liability claims are
    assumed by the product vendor.


Libhydrogen License
-------------------

::

    ISC License

    Copyright (c) 2017-2023
    Frank Denis <j at pureftpd dot org>

    Permission to use, copy, modify, and/or distribute this software for any
    purpose with or without fee is hereby granted, provided that the above
    copyright notice and this permission notice appear in all copies.

    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.


Harfbuzz License
----------------

::

    HarfBuzz is licensed under the so-called "Old MIT" license.  Details follow.
    For parts of HarfBuzz that are licensed under different licenses see individual
    files names COPYING in subdirectories where applicable.

    Copyright © 2010-2022  Google, Inc.
    Copyright © 2015-2020  Ebrahim Byagowi
    Copyright © 2019,2020  Facebook, Inc.
    Copyright © 2012,2015  Mozilla Foundation
    Copyright © 2011  Codethink Limited
    Copyright © 2008,2010  Nokia Corporation and/or its subsidiary(-ies)
    Copyright © 2009  Keith Stribley
    Copyright © 2011  Martin Hosken and SIL International
    Copyright © 2007  Chris Wilson
    Copyright © 2005,2006,2020,2021,2022,2023  Behdad Esfahbod
    Copyright © 2004,2007,2008,2009,2010,2013,2021,2022,2023  Red Hat, Inc.
    Copyright © 1998-2005  David Turner and Werner Lemberg
    Copyright © 2016  Igalia S.L.
    Copyright © 2022  Matthias Clasen
    Copyright © 2018,2021  Khaled Hosny
    Copyright © 2018,2019,2020  Adobe, Inc
    Copyright © 2013-2015  Alexei Podtelezhnikov

    For full copyright notices consult the individual files in the package.


    Permission is hereby granted, without written agreement and without
    license or royalty fees, to use, copy, modify, and distribute this
    software and its documentation for any purpose, provided that the
    above copyright notice and the following two paragraphs appear in
    all copies of this software.

    IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
    DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
    ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
    IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
    DAMAGE.

    THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
    BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
    FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
    ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
    PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

Libyuv License
--------------

::

    Copyright 2011 The LibYuv Project Authors. All rights reserved.

    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 name of Google nor the names of its 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 SUBSTITUTE 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.


XZ License
-----------

::

    Copyright (c) 2014-2022  Ulrich Kunitz
    All rights reserved.

    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.

    * My name, Ulrich Kunitz, may not 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 SUBSTITUTE 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.
