Artefacts when hardware decoding HEVC file

Author: dechampsCreated Feb 5, 2023Updated Aug 5, 2026

This HEVC sample produces video artefacts when any hardware decoder is selected in the LAV Video options. Software decoding is fine.

If the hardware decoder cannot handle this bitstream then it would be nice if LAV could automatically fall back to software decoding instead of letting the hardware decoder choke on it.

  • LAV Filters 0.77.1
  • GPU: NVIDIA GeForce RTX 3080 Ti, drivers 528.24 (latest)
  • Windows 11 22H2 22621.1105
Video
ID                        : 1
Format                    : HEVC
Format/Info               : High Efficiency Video Coding
Format profile            : Main 10
Format level              : 5.1
Format tier               : High
HDR format                : Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2086, HDR10 compatible
Codec ID                  : V_MPEGH/ISO/HEVC
Duration                  : 14 s 97 ms
Bit rate                  : 38.4 Mb/s
Width                     : 3 840 pixels
Height                    : 1 920 pixels
Display aspect ratio      : 2.000
Frame rate mode           : Variable
Frame rate                : 5 498.475 FPS
Original frame rate       : 23.976 FPS
Color space               : YUV
Chroma subsampling        : 4:2:0 (Type 2)
Bit depth                 : 10 bits
Bits/(Pixel*Frame)        : 0.001
Stream size               : 14.5 GiB
Writing library           : x265 3.5+73-a7ca45961:[Windows][MSVC 1934][64 bit] 10bit
Encoding settings         : cpuid=1111039 / frame-threads=4 / numa-pools=24 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=1 / input-res=3840x1920 / interlace=0 / total-frames=77512 / level-idc=51 / high-tier=1 / uhd-bd=0 / ref=5 / no-allow-non-conformance / repeat-headers / annexb / aud / no-eob / no-eos / hrd / info / hash=0 / no-temporal-layers / no-open-gop / min-keyint=23 / keyint=250 / gop-lookahead=0 / bframes=12 / b-adapt=2 / b-pyramid / bframe-bias=0 / rc-lookahead=40 / lookahead-slices=4 / scenecut=40 / no-hist-scenecut / radl=0 / no-splice / no-intra-refresh / ctu=64 / min-cu-size=8 / rect / no-amp / max-tu-size=32 / tu-inter-depth=4 / tu-intra-depth=4 / limit-tu=4 / rdoq-level=2 / dynamic-rd=0.00 / no-ssim-rd / signhide / no-tskip / nr-intra=0 / nr-inter=0 / no-constrained-intra / strong-intra-smoothing / max-merge=5 / limit-refs=0 / limit-modes / me=3 / subme=5 / merange=57 / temporal-mvp / no-frame-dup / no-hme / weightp / weightb / no-analyze-src-pics / deblock=-3:-3 / no-sao / no-sao-non-deblock / rd=4 / selective-sao=0 / no-early-skip / rskip / rskip-edge-threshold=0.020000 / no-fast-intra / no-tskip-fast / no-cu-lossless / b-intra / no-splitrd-skip / rdpenalty=0 / psy-rd=2.00 / psy-rdoq=1.00 / no-rd-refine / no-lossless / cbqpoffs=0 / crqpoffs=0 / rc=crf / crf=17.0 / qcomp=0.60 / qpstep=4 / stats-write=0 / stats-read=0 / vbv-maxrate=160000 / vbv-bufsize=160000 / 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=4 / aq-strength=1.00 / no-cutree / zone-count=0 / no-strict-cbr / qg-size=32 / no-rc-grain / qpmax=69 / qpmin=0 / no-const-vbv / sar=0 / overscan=0 / videoformat=5 / range=0 / colorprim=9 / transfer=16 / colormatrix=9 / chromaloc=1 / chromaloc-top=2 / chromaloc-bottom=2 / display-window=0 / master-display=G(8500,39850)B(6550,2300)R(35400,14600)WP(15635,16450)L(10000000,1) / cll=884,179 / min-luma=0 / max-luma=1023 / 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-sbrc / hdr10 / 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-pass / no-mcstf
Language                  : English
Default                   : Yes
Forced                    : No
Color range               : Limited
Color primaries           : BT.2020
Transfer characteristics  : PQ
Matrix coefficients       : BT.2020 non-constant
Mastering display color p : BT.2020
Mastering display luminan : min: 0.0001 cd/m2, max: 1000 cd/m2
Maximum Content Light Lev : 884 cd/m2
Maximum Frame-Average Lig : 179 cd/m2