Hypothetical Reference Decoding (HRD) model assumes that data flows
into a buffer of the fixed size BufferSizeInKB with a constant bitrate.
Smaller BufferSizeInKB means smaller frame size variations,
but more difficult to maintain HRD.
Signed-off-by: Zhong Li <zhong...@intel.com>
---
libavcodec/qsvenc.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
index 57f78c4..96c8fb5 100644
--- a/libavcodec/qsvenc.c
+++ b/libavcodec/qsvenc.c
@@ -495,6 +495,7 @@ static int init_video_param(AVCodecContext *avctx,
QSVEncContext *q)
#if QSV_HAVE_VCM
case MFX_RATECONTROL_VCM:
#endif
+ q->param.mfx.BufferSizeInKB = avctx->rc_buffer_size / 8000;
q->param.mfx.InitialDelayInKB = avctx->rc_initial_buffer_occupancy /
1000;
q->param.mfx.TargetKbps = avctx->bit_rate / 1000;
q->param.mfx.MaxKbps = avctx->rc_max_rate / 1000;
--
1.8.3.1
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