Add mb_rate_control option docs for h264_vaapi encoder.
Signed-off-by: Jun Zhao <jun.z...@intel.com>
---
doc/encoders.texi | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/doc/encoders.texi b/doc/encoders.texi
index 899faac..6851e75 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -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:
--
1.7.1
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