[FFmpeg-devel] [PATCH] VP8 de/encode via libvpx

[Måns Rullgård]

James Zern <jzern at google.com> writes:

> +/*
> + *  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
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> + *  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.
> + * 
> + *  Subject to the terms and conditions of the above License, 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, and otherwise transfer this implementation of VP8, 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 this implementation of VP8. If You or your
> + *  agent or exclusive licensee institute or order or agree to the
> + *  institution of patent litigation against any entity (including a
> + *  cross-claim or counterclaim in a lawsuit) alleging that this
> + *  implementation of VP8 or any code incorporated within this
> + *  implementation of VP8 constitutes direct or contributory patent
> + *  infringement, or inducement of patent infringement, then any rights
> + *  granted to You under this License for this implementation of VP8
> + *  shall terminate as of the date such litigation is filed.
> + */

This licence is probably not compatible with the GPL, specifically
clauses 6 and 7:

--8<--
  6. Each time you redistribute the Program (or any work based on the
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You are not responsible for enforcing compliance by third parties to
this License.

  7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
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otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot
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may not distribute the Program at all.  For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.

If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
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This section is intended to make thoroughly clear what is believed to
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-->8--

-- 
M?ns Rullg?rd
mans at mansr.com