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[FFmpeg-devel,v4,2/2] doc/vaapi_encode: add documentations for max_frame_size

Message ID 20220322141119.595627-2-fei.w.wang@intel.com
State New
Headers show
Series [FFmpeg-devel,v4,1/2] lavc/vaapi_encode: add support for maxframesize | expand


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Commit Message

Fei Wang March 22, 2022, 2:11 p.m. UTC
From: Linjie Fu <linjie.fu@intel.com>

Add docs for max_frame_size option.

Signed-off-by: Linjie Fu <linjie.fu@intel.com>
Signed-off-by: Fei Wang <fei.w.wang@intel.com>
 doc/encoders.texi | 6 ++++++
 1 file changed, 6 insertions(+)
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diff --git a/doc/encoders.texi b/doc/encoders.texi
index 1bd38671ca..93fb535e98 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -3602,6 +3602,12 @@  performance. This option doesn't work if driver doesn't implement vaSyncBuffer
 function. Please make sure there are enough hw_frames allocated if a large
 number of async_depth is used.
+@item max_frame_size
+Set the allowed max size in bytes for each frame. If the frame size exceeds
+the limitation, encoder will adjust the QP value by adding delta_qp for each
+pass to control the frame size. To simplify the usage, delta_qp is set to
 @item rc_mode
 Set the rate control mode to use.  A given driver may only support a subset of