Sorry I don’t have Avatar.
I meant something with small text on the screen so we can check if it is just this encode.
Just have a look at the end credits of something. I can’t see anything wrong here.
I kinda get a feeling that this is color bleeding.
Maybe the video is 10bit HEVC but flagged as 8bit?
Ok so I dusted off my blu-ray copy of Avatar and used Handbrake to encode the same section using h265 at 3 different quality levels and they all playback perfectly on my N2 with no bluring of the text.
Avatar_RF_25_LQ.mkv (1.4 MB)
Avatar_RF_22_Default.mkv (2.2 MB)
Avatar_RF_19_HQ.mkv (3.6 MB)
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Good man. Non-issue as expected, just a dodgy encode.
Well no not exactly a non-issue… There’s still the fact that the sample @supersnail provided plays back perfectly fine on both PC and my TV’s internal media player so I thinks there’s definitely some issue with that particulate encode that only affects amlogic hardware.
That’s the big question. Some feature is either not supported or there is a bug regarding these encodes. It’s gonna be a bitch to debug. If we could find out how the sample with this issue was encoded maybe we find the reason.
Mediainfo :
Encoding settings : cpuid=1111039 / frame-threads=1 / numa-pools=none / no-wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=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 / info / hash=0 / no-temporal-layers / open-gop / min-keyint=23 / keyint=250 / gop-lookahead=0 / bframes=4 / b-adapt=2 / b-pyramid / bframe-bias=0 / rc-lookahead=20 / lookahead-slices=0 / 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=19.0 / 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=255 / sar-width / : / sar-height=1071:1072 / 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
These are the encoder differences between the problem sample and my working Handbrake encode
was incorrectly encoded, probably on purpose IMO.
No sorry. Day doesn’t have enough hours.
Yeah it skips like hell
Yes, A lot of UHD movies in my nas playback with N2 stutters
We will look into it. It is definitely a bug. Thanks for reporting it.
This seems to play fine on mine.
I wonder if this is related to dynamic_buf_num_margin value. I’ve set mine to 16.
Iirc, default value on N2 is 7 (?)
/sys/module/amvdec_h265/parameters/dynamic_buf_num_margin
Good idea.
I think that some encoder settings just don’t play very well with the hardware decoding block in AML chips. I think that the decoder in G52 is the same as older chips or similar.
I seen a couple of H264 encodes that pixelate and stutter with hardware decoding, but work fine on a PC (with HW decoding), the TV player or on the N2 with SW decoding. Not sure what the solution for this is, but it’s a real problem I believe.