@@ -2620,6 +2620,10 @@ Each encoder also has its own specific options:
@option{profile} sets the value of @emph{profile_idc} and the @emph{constraint_set*_flag}s.
@option{level} sets the value of @emph{level_idc}.
+@option{mb_rate_control} enabled the macro block level bit rate control, that generally
+improves subjective visual quality. It may have a negative impact on performance and
+objective visual quality metrics. Default is off and can't compatible with Constant QP.
+
@table @option
@item coder
Set entropy encoder (default is @emph{cabac}). Possible values:
Add mb_rate_control option docs for h264_vaapi encoder. Signed-off-by: Jun Zhao <jun.zhao@intel.com> --- doc/encoders.texi | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-)