Merge commit 'ca62236a'

* commit 'ca62236a':
  vaapi_encode: Add VP8 support
  vaapi_encode: Pass framerate parameters to driver
  vaapi_h264: Enable VBR mode
  vaapi_encode: Support VBR mode

This commit is a noop, see
ceb28c3c
2201c02e
be6546a4
d1acab82Merged-by: James Almer <jamrial@gmail.com>