You forgot to mention the skeleton in the closet on vp9's license terms. It is patent encumbered, by Google owned patents, but they allow free use, so long as

You forgot to mention the skeleton in the closet on vp9's license terms. It is patent encumbered, by Google owned patents, but they allow free use, so long as you promise to never sue them for patent infringement. Given how many pies they have their fingers in, that seems like a pretty big catch.