x265 视频编码默认参数

x265 视频编码默认参数

编码默认perset =  medium；

./ffmpeg -i src.mp4 -c:v libx265 -an -f mp4 /dev/null -y

默认编码参数：

x265 [info]: x265_param：cpuid=1111039 frame-threads=3 wpp no-pmode no-pme no-psnr no-ssim log-level=2 bitdepth=8 input-csp=1 fps=25/1 input-res=1920x1080 interlace=0 total-frames=0 level-idc=0 high-tier=1 uhd-bd=0 ref=3 no-allow-non-conformance no-repeat-headers annexb no-aud no-hrd no-info hash=0 no-temporal-layers open-gop min-keyint=25 keyint=250 gop-lookahead=0 bframes=4 b-adapt=2 b-pyramid bframe-bias=0 rc-lookahead=20 lookahead-slices=6 scenecut=40 radl=0 no-intra-refresh ctu=64 min-cu-size=8 no-rect no-amp max-tu-size=32 tu-inter-depth=1 tu-intra-depth=1 limit-tu=0 rdoq-level=0 dynamic-rd=0.00 no-ssim-rd signhide no-tskip nr-intra=0 nr-inter=0 no-constrained-intra strong-intra-smoothing max-merge=2 limit-refs=3 no-limit-modes me=1 subme=2 merange=57 temporal-mvp weightp no-weightb no-analyze-src-pics deblock=0:0 sao no-sao-non-deblock rd=3 no-early-skip rskip no-fast-intra no-tskip-fast no-cu-lossless no-b-intra no-splitrd-skip rdpenalty=0 psy-rd=2.00 psy-rdoq=0.00 no-rd-refine no-lossless cbqpoffs=0 crqpoffs=0 rc=crf crf=28.0 qcomp=0.60 qpstep=4 stats-write=0 stats-read=0 ipratio=1.40 pbratio=1.30 aq-mode=1 aq-strength=1.00 cutree zone-count=0 no-strict-cbr qg-size=32 no-rc-grain qpmax=69 qpmin=0 no-const-vbv sar=1 overscan=0 videoformat=5 range=0 colorprim=2 transfer=2 colormatrix=2 chromaloc=0 display-window=0 max-cll=0,0 min-luma=0 max-luma=255 log2-max-poc-lsb=8 vui-timing-info vui-hrd-info slices=1 no-opt-qp-pps no-opt-ref-list-length-pps no-multi-pass-opt-rps scenecut-bias=0.05 no-opt-cu-delta-qp no-aq-motion no-hdr no-hdr-opt no-dhdr10-opt no-idr-recovery-sei analysis-reuse-level=5 scale-factor=0 refine-intra=0 refine-inter=0 refine-mv=0 no-limit-sao ctu-info=0 no-lowpass-dct refine-mv-type=0 copy-pic=1 max-ausize-factor=1.0 no-dynamic-refine no-single-sei