Module: libav Branch: master Commit: 6ff29343b01923e9b125fe7404ac8701cdfb1fe5
Author: Li, Zhong <[email protected]> Committer: Maxym Dmytrychenko <[email protected]> Date: Fri Dec 1 16:48:45 2017 +0800 lavc/qsvenc: set HRD buffer size 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 <[email protected]> Signed-off-by: Maxym Dmytrychenko <[email protected]> --- libavcodec/qsvenc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c index 9db9eb3..f6034c4 100644 --- a/libavcodec/qsvenc.c +++ b/libavcodec/qsvenc.c @@ -503,6 +503,7 @@ 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; _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
