[FFmpeg-devel] [PATCH 3/7] doc/encoders: Add docs for mb_rate_control option

[Jun Zhao]

Add mb_rate_control option docs for h264_vaapi encoder.

Signed-off-by: Jun Zhao <jun.zhao at 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}.
 
+ at 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