@@ -267,6 +267,11 @@ static void dump_video_param(AVCodecContext *avctx, QSVEncContext *q,
#endif
#endif
+#if QSV_HAVE_GPB
+ if (avctx->codec_id == AV_CODEC_ID_HEVC)
+ av_log(avctx, AV_LOG_VERBOSE,"GPB: %s\n", print_threestate(co3->GPB));
+#endif
+
if (avctx->codec_id == AV_CODEC_ID_H264) {
av_log(avctx, AV_LOG_VERBOSE, "Entropy coding: %s; MaxDecFrameBuffering: %"PRIu16"\n",
co->CAVLC == MFX_CODINGOPTION_ON ? "CAVLC" : "CABAC", co->MaxDecFrameBuffering);
@@ -748,6 +753,10 @@ FF_ENABLE_DEPRECATION_WARNINGS
#if QSV_HAVE_CO3
q->extco3.Header.BufferId = MFX_EXTBUFF_CODING_OPTION3;
q->extco3.Header.BufferSz = sizeof(q->extco3);
+#if QSV_HAVE_GPB
+ if (avctx->codec_id == AV_CODEC_ID_HEVC)
+ q->extco3.GPB = q->gpb ? MFX_CODINGOPTION_ON : MFX_CODINGOPTION_OFF;
+#endif
q->extparam_internal[q->nb_extparam_internal++] = (mfxExtBuffer *)&q->extco3;
#endif
}
@@ -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;
@@ -241,6 +241,8 @@ static const AVOption options[] = {
{ "main10", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN10 }, INT_MIN, INT_MAX, VE, "profile" },
{ "mainsp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAINSP }, INT_MIN, INT_MAX, VE, "profile" },
+ { "gpb", "1: GPB (generalized P/B frame); 0: regular P frame", OFFSET(qsv.gpb), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, VE},
+
{ NULL },
};
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> --- libavcodec/qsvenc.c | 9 +++++++++ libavcodec/qsvenc.h | 3 +++ libavcodec/qsvenc_hevc.c | 2 ++ 3 files changed, 14 insertions(+)