Merge commit 'b8cac1e8'

* commit 'b8cac1e8':
  vaapi_h265: Fix buffering parameters
  vaapi_h265: Fix slice header writing
  vaapi_h264: Write bitstream restriction fields
  vaapi_h264: Fix CFR mode with frame_rate set in AVCodecContext
  vaapi_encode: Decide on GOP setup before initialising sequence parameters

This merge is a noop, see:
  30ebabca vaapi_h265: Fix buffering parameters
  ae0230cc vaapi_h265: Fix slice header writing
  6796e6ea vaapi_h264: Write bitstream restriction fields
  658c5afa vaapi_h264: Fix CFR mode with frame_rate set in AVCodecContext
  ded1859d vaapi_encode: Decide on GOP setup before initialising sequence parameters
Merged-by: Clément Bœsch <u@pkh.me>