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

Submitted by Jun Zhao on Nov. 3, 2018, 2:52 a.m.

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Message ID 1541213532-23882-4-git-send-email-mypopydev@gmail.com
State New
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Commit Message

Jun Zhao Nov. 3, 2018, 2:52 a.m.
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(-)

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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: