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| author | galinart <artem.galin@gmail.com> | 2022-12-05 20:18:21 +0000 |
|---|---|---|
| committer | Haihao Xiang <haihao.xiang@intel.com> | 2023-01-30 08:48:58 +0800 |
| commit | 500282941655558e2440afe163f0268dc5ac61bf (patch) | |
| tree | 2f19c8273c7fedfb629a720cfde70dbb3a3facd0 /libavcodec/qsvenc_h264.c | |
| parent | aecfec6f80fd8be68e050a97935589beeae588fa (diff) | |
| download | ffmpeg-500282941655558e2440afe163f0268dc5ac61bf.tar.gz | |
libavcodec/qsvenc: enable Hyper Encode
Hyper Encode uses Intel integrated and discrete graphics on one system
to accelerate encoding of a single video stream.
Depending on the selected parameters and codecs, performance gain on AlderLake iGPU + ARC Gfx up to 1.6x.
More information: https://www.intel.co.uk/content/www/uk/en/architecture-and-technology/adaptix/deep-link.html
Developer guide: https://github.com/oneapi-src/oneVPL-intel-gpu/blob/main/doc/HyperEncode_FeatureDeveloperGuide.md
Hyper Encode is supported only on Windows and requires D3D11 and oneVPL.
To enable Hyper Encode need to specify:
-Hyper Encode mode (-dual_gfx on or dual_gfx adaptive)
-Encoder: h264_qsv or hevc_qsv
-BRC: VBR, CQP or ICQ
-Lowpower mode (-low_power 1)
-Closed GOP for AVC or strict GOP for HEVC -idr_interval = 0 used by default
Depending on the encoding parameters, the following parameters may need
to be adjusted:
-g recommended >= 30 for better performance
-async_depth recommended >= 30 for better performance
-extra_hw_frames recommended equal to async_depth value
-bf recommended = 0 for better performance
In the cases with fast encoding (-preset veryfast) there may be no
performance gain due to the fact that the decode is slower than the encode.
Command line examples:
ffmpeg.exe -init_hw_device qsv:hw,child_device_type=d3d11va,child_device=0 -v verbose -y -hwaccel qsv -extra_hw_frames 60 -async_depth 60 -c:v h264_qsv -i bbb_sunflower_2160p_60fps_normal.mp4
-async_depth 60 -c:v h264_qsv -preset medium -g 60 -low_power 1 -bf 0 -dual_gfx on output.h265
Signed-off-by: galinart <artem.galin@intel.com>
Diffstat (limited to 'libavcodec/qsvenc_h264.c')
| -rw-r--r-- | libavcodec/qsvenc_h264.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/qsvenc_h264.c b/libavcodec/qsvenc_h264.c index bbdedc3335..071a9a79e9 100644 --- a/libavcodec/qsvenc_h264.c +++ b/libavcodec/qsvenc_h264.c @@ -117,6 +117,9 @@ static const AVOption options[] = { QSV_OPTION_SCENARIO QSV_OPTION_AVBR QSV_OPTION_SKIP_FRAME +#if QSV_HAVE_HE + QSV_HE_OPTIONS +#endif { "cavlc", "Enable CAVLC", OFFSET(qsv.cavlc), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, #if QSV_HAVE_VCM |