The CPU usage drops to 65% to 80% !! Meanwhile the GPU decoder usage is still 0%. Now when I play a 3630p 10 bit video in Windows Media Player, the playback is insufferably slow and jumpy. Therefore, the HEVC codec in my PC (Win10 1809, build 17763) is obviously using pure software decoding. Meanwhile the GPU decoder usage remains at 0%. There is no LAV icons in the notification area, and the CPU usage of my poor Ryjumps to 100%. When I play a 3630p 8bit video in Windows Media Player, it's definitely using the HEVC codec. What kind of benefit does this new runtime brings?Ībout the HEVC codec from Microsoft, I have an interesting revelation: This means, even the CPU is fast enough to decode, DeoVR still have some kind of pipeline problem, which makes the video lagging or Well, while I am glad that using good old "cuvid" fixed his problem, I start wondering whether DeoVR's decision to use new runtime really worth the effort? Rewriting code from the ground is quite painful, yet the result is actually not as good as the 8.xx ones. Then from his reply post, it turned out it's still the "hardware acceleration" issue. So from my point of view, even just with the software decoding, his machine should be fine playing the video, so I suggested it was 10 bit problem. Yet our friend still have a problem of playing a mere 5k video smoothly. GeForce 1080 can handle 8kx8k, and GeForce 2070 should be able to handle 16k x 16k HEVC decoding. In LAV Video setting, it's when "hardware acceleration" set to "none". It uses only CPU, which is Ryzen 5, to decode the video. While I said that the CPU Ryitself should be able to handle a 5k video, you kept referring the issue to GPU decoding.ĬPU decoding is the "software only" decoding. You confused yourself with CPU and GPU decoding. Writing library : x265 3.5+9-bf91444e0: 8bit+10bit+12bitĮncoding settings : cpuid=1111039 / frame-threads=6 / numa-pools=48,0 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=1 / input-res=5400x2700 / 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-eob / no-eos / no-hrd / info / hash=0 / no-temporal-layers / no-open-gop / min-keyint=360 / keyint=360 / gop-lookahead=0 / bframes=4 / b-adapt=2 / b-pyramid / bframe-bias=0 / rc-lookahead=20 / lookahead-slices=8 / scenecut=0 / hist-scenecut=0 / radl=0 / no-splice / 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=3 / limit-refs=1 / no-limit-modes / me=1 / subme=2 / merange=57 / temporal-mvp / no-frame-dup / no-hme / weightp / no-weightb / no-analyze-src-pics / deblock=0:0 / sao / no-sao-non-deblock / rd=3 / selective-sao=4 / early-skip / rskip / no-fast-intra / no-tskip-fast / no-cu-lossless / 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=20.0 / qcomp=0.60 / qpstep=4 / stats-write=0 / stats-read=0 / vbv-maxrate=30000 / vbv-bufsize=60000 / vbv-init=0.9 / min-vbv-fullness=50.0 / max-vbv-fullness=80.0 / crf-max=0.0 / crf-min=0.0 / ipratio=1.40 / pbratio=1.30 / aq-mode=2 / 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=1 / colorprim=1 / transfer=1 / colormatrix=1 / chromaloc=0 / display-window=0 / 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 / hist-threshold=0.03 / no-opt-cu-delta-qp / no-aq-motion / no-hdr10 / no-hdr10-opt / no-dhdr10-opt / no-idr-recovery-sei / analysis-reuse-level=0 / analysis-save-reuse-level=0 / analysis-load-reuse-level=0 / scale-factor=0 / refine-intra=0 / refine-inter=0 / refine-mv=1 / refine-ctu-distortion=0 / no-limit-sao / ctu-info=0 / no-lowpass-dct / refine-analysis-type=0 / copy-pic=1 / max-ausize-factor=1.0 / no-dynamic-refine / no-single-sei / no-hevc-aq / no-svt / no-field / qp-adaptation-range=1.00 / scenecut-aware-qp=0conformance-window-offsets / right=0 / bottom=0 / decoder-max-rate=0 / no-vbv-live-multi-passįormat/Info : Advanced Audio Codec Low Complexity Here's the MediaInfo for one of the 5K videos that is lagging:įormat/Info : High Efficiency Video CodingĬodec ID/Info : High Efficiency Video Coding I don't believe my videos are in 10-bit, though I don't really know much about encoding, so I could be reading the stats wrong.
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