diff options
| author | Wenbin Chen <wenbin.chen-at-intel.com@ffmpeg.org> | 2022-02-18 11:07:47 +0800 |
|---|---|---|
| committer | Haihao Xiang <haihao.xiang@intel.com> | 2022-02-28 12:37:02 +0800 |
| commit | d165ce22a4a7cc4ed60238ce8f3d5dcbbad3e266 (patch) | |
| tree | 5cfcf2b49cce0ec67d1838a00dd2c83c4c165aaf /doc | |
| parent | e0ff86993052b49a64d434bac345e92fc149f446 (diff) | |
libavcodec/vaapi_encode: Add async_depth to vaapi_encoder to increase performance
Fix: #7706. After commit 5fdcf85bbffe7451c2, vaapi encoder's performance
decrease. The reason is that vaRenderPicture() and vaSyncBuffer() are
called at the same time (vaRenderPicture() always followed by a
vaSyncBuffer()). Now I changed them to be called in a asynchronous way,
which will make better use of hardware.
Async_depth is added to increase encoder's performance. The frames that
are sent to hardware are stored in a fifo. Encoder will sync output
after async fifo is full.
Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/encoders.texi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/encoders.texi b/doc/encoders.texi index 9afb920f69..64e8c5d129 100644 --- a/doc/encoders.texi +++ b/doc/encoders.texi @@ -3591,6 +3591,12 @@ will refer only to P- or I-frames. When set to greater values multiple layers of B-frames will be present, frames in each layer only referring to frames in higher layers. +@item async_depth +Maximum processing parallelism. Increase this to improve single channel +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 rc_mode Set the rate control mode to use. A given driver may only support a subset of modes. |