[FFmpeg-devel,5/7] doc/encoders: Add sliding_window docs for h264_vaapi.

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


Message ID 1541213532-23882-6-git-send-email-mypopydev@gmail.com
State New
Headers show

Commit Message

Jun Zhao Nov. 3, 2018, 2:52 a.m.
Add sliding_window 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 6851e75..c558b76 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -2624,6 +2624,10 @@  Each encoder also has its own specific options:
 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.
+@option{sliding_window} enabled the sliding windows bit rate control, that is a feature to
+reduce the instant bitrate fluctuation, occasional big frame size for intra and scene
+change frames are allowed. And the fluctuation level can be controlled by max bit rate.
 @table @option
 @item coder
 Set entropy encoder (default is @emph{cabac}).  Possible values: