Binary package “libvpx-doc” in ubuntu xenial

VP8 and VP9 video codec (API documentation)

 VP8 and VP9 are open video codecs, originally developed by On2 and released
 as open source by Google Inc. They are the successor of the VP3 codec,
 on which the Theora codec was based.
 .
 This package contains the HTML documentation for the libvpx library
 in /usr/share/doc/libvpx-doc.