This update for libvpx fixes the following issues:
{ "binaries": [ { "libvpx4": "1.6.1-6.3.1" } ] }
{ "binaries": [ { "libvpx-devel": "1.6.1-6.3.1" } ] }
{ "binaries": [ { "vpx-tools": "1.6.1-6.3.1" } ] }