diff options
| author | Zhong Li <zhong.li@intel.com> | 2019-01-11 15:09:07 +0800 |
|---|---|---|
| committer | Zhong Li <zhong.li@intel.com> | 2019-04-03 23:00:15 +0800 |
| commit | 1125277bc64ebef1a7a6bee7349c7a8fab7fdcc7 (patch) | |
| tree | 6be91d4d5a8e21b972b1ad3d5d73042ea3d3cffc /libavcodec/qsvenc.h | |
| parent | c745bedd18afea19e3eb75da3d094d542b02a88b (diff) | |
| download | ffmpeg-1125277bc64ebef1a7a6bee7349c7a8fab7fdcc7.tar.gz | |
lavc/qsvenc: enable hevc gpb option
GPB is the default type, just contains forward references but the
slice_type is B slice with higher encoding efficiency than regular P
slice, but lower performance.
Add an option to allow user to set regular P slice.
Fix ticket#6870
Test data on Intel Kabylake (i7-7567U CPU @ 3.50GHz):
1. ffmpeg -hwaccel qsv -c:v h264_qsv -i bbb_sunflower_1080p_30fps_normal.mp4 -vsync passthrough
-vframes 1000 -c:v hevc_qsv -gpb 0 -bf 0 -q 25 test_gpb_off_bf0_kbl.mp4
transcoding fps: 85
encoded file size of test_gpb_off_bf0_kbl.mp4: 21960100 (bytes)
2. ffmpeg -hwaccel qsv -c:v h264_qsv -i bbb_sunflower_1080p_30fps_normal.mp4 -vsync passthrough
-vframes 1000 -c:v hevc_qsv -gpb 1 -bf 0 -q 25 test_gpb_on_bf0_kbl.mp4
transcoding fps: 79
encoded file size oftest_gpb_on_bf0_kbl.mp4: 21211449 (bytes)
In this case, enable gpb can bring about 7% performance drop but 3.4% encoding efficiency improvment.
Signed-off-by: Zhong Li <zhong.li@intel.com>
Diffstat (limited to 'libavcodec/qsvenc.h')
| -rw-r--r-- | libavcodec/qsvenc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/qsvenc.h b/libavcodec/qsvenc.h index f6d53d44cd..f2f4d38503 100644 --- a/libavcodec/qsvenc.h +++ b/libavcodec/qsvenc.h @@ -47,6 +47,8 @@ #define QSV_HAVE_LA_HRD QSV_VERSION_ATLEAST(1, 11) #define QSV_HAVE_VDENC QSV_VERSION_ATLEAST(1, 15) +#define QSV_HAVE_GPB QSV_VERSION_ATLEAST(1, 18) + #if defined(_WIN32) || defined(__CYGWIN__) #define QSV_HAVE_AVBR QSV_VERSION_ATLEAST(1, 3) #define QSV_HAVE_ICQ QSV_VERSION_ATLEAST(1, 8) @@ -173,6 +175,7 @@ typedef struct QSVEncContext { int repeat_pps; int low_power; + int gpb; int a53_cc; |