hdr to sdr, ffmpeg use -vf and -filter_complex has different result

[KaGaWu]

I want to transcode my bule ray which 4K HDR video to SDR videos through FFmpeg, but there is something looks different result between -vf and -filter_complex, even if used the same numerical command.

The tested HDR video have the property

"@type": "Video",
"StreamOrder": "0",
"ID": "1",
"UniqueID": "9714518244579198061",
"Format": "HEVC",
"Format_Profile": "Main 10",
"Format_Level": "5.1",
"Format_Tier": "High",
"HDR_Format": "SMPTE ST 2086",
"HDR_Format_Compatibility": "HDR10",
"CodecID": "V_MPEGH/ISO/HEVC",
"Duration": "60.143000000",
"BitRate": "5500827",
"Width": "3840",
"Height": "1608",
"Sampled_Width": "3840",
"Sampled_Height": "1608",
"PixelAspectRatio": "1.000",
"DisplayAspectRatio": "2.388",
"FrameRate_Mode": "CFR",
"FrameRate": "23.976",
"FrameCount": "1442",
"ColorSpace": "YUV",
"ChromaSubsampling": "4:2:0",
"ChromaSubsampling_Position": "Type 2",
"BitDepth": "10",
"Delay": "0.000",
"StreamSize": "41354859",
"Encoded_Library": "x265 - 2.5+27-0e168bdeb48b:[Windows][GCC 6.2.1][64 bit] 10bit",
"Encoded_Library_Name": "x265",
"Encoded_Library_Version": "2.5+27-0e168bdeb48b:[Windows][GCC 6.2.1][64 bit] 10bit",
"Encoded_Library_Settings": "cpuid=1173503 / frame-threads=4 / numa-pools=16 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=1 / input-res=3840x1608 / interlace=0 / total-frames=167640 / level-idc=51 / high-tier=1 / uhd-bd=0 / ref=4 / no-allow-non-conformance / repeat-headers / annexb / aud / hrd / info / hash=0 / no-temporal-layers / no-open-gop / min-keyint=1 / keyint=24 / bframes=4 / b-adapt=2 / b-pyramid / bframe-bias=0 / rc-lookahead=25 / lookahead-slices=4 / scenecut=40 / no-intra-refresh / ctu=64 / min-cu-size=8 / rect / no-amp / max-tu-size=32 / tu-inter-depth=1 / tu-intra-depth=1 / limit-tu=0 / rdoq-level=2 / dynamic-rd=0.00 / no-ssim-rd / signhide / no-tskip / nr-intra=0 / nr-inter=0 / no-constrained-intra / no-strong-intra-smoothing / max-merge=3 / limit-refs=3 / limit-modes / me=3 / subme=3 / merange=57 / temporal-mvp / weightp / no-weightb / no-analyze-src-pics / deblock=-3:-3 / no-sao / no-sao-non-deblock / rd=4 / 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=1.00 / no-rd-refine / analysis-reuse-mode=0 / 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 / crf-max=0.0 / crf-min=0.0 / 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=9 / transfer=16 / colormatrix=9 / chromaloc=1 / chromaloc-top=2 / chromaloc-bottom=2 / display-window=0 / master-display=G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(40000000,50) / max-cll=9977,240 / min-luma=0 / max-luma=1023 / log2-max-poc-lsb=8 / vui-timing-info / vui-hrd-info / slices=1 / opt-qp-pps / opt-ref-list-length-pps / no-multi-pass-opt-rps / scenecut-bias=0.05 / no-opt-cu-delta-qp / no-aq-motion / hdr / hdr-opt / no-dhdr10-opt / analysis-reuse-level=5 / scale-factor=0 / refine-intra=0 / refine-inter=0 / refine-mv=0 / no-limit-sao / ctu-info=0",
"Default": "Yes",
"Forced": "No",
"colour_description_present": "Yes",
"colour_description_present_Source": "Container / Stream",
"colour_range": "Limited",
"colour_range_Source": "Container / Stream",
"colour_primaries": "BT.2020",
"colour_primaries_Source": "Container / Stream",
"transfer_characteristics": "PQ",
"transfer_characteristics_Source": "Container / Stream",
"matrix_coefficients": "BT.2020 non-constant",
"matrix_coefficients_Source": "Container / Stream",
"MasteringDisplay_ColorPrimaries": "Display P3",
"MasteringDisplay_ColorPrimaries_Source": "Stream",
"MasteringDisplay_Luminance": "min: 0.0050 cd/m2, max: 4000 cd/m2",
"MasteringDisplay_Luminance_Source": "Stream",
"MaxCLL": "9977 cd/m2",
"MaxCLL_Source": "Stream",
"MaxFALL": "240 cd/m2",
"MaxFALL_Source": "Stream"

-vf hdr to sdr

ffmpeg -hide_banner -y \
-i ./001_red_hevc_3840x1608_60s_yuv420p10le_44MB.mkv -map 0:v:0 -c:v hevc \
-vf "scale=3840:1608,zscale=t=linear:npl=55,format=gbrpf32le,zscale=p=bt709,tonemap=tonemap=hable:desat=0,zscale=t=bt709:m=bt709:r=tv,format=yuv420p" \
-colorspace "bt709" -color_trc bt709 -color_primaries bt709 \
-sc_threshold 0 -g 240 -keyint_min 240 -vsync passthrough -preset:v fast \
-max_muxing_queue_size 9999 -analyzeduration 10M -probesize 50M -movflags faststart \
./003_red_hevc_sdr_vf.mkv

-filter_complex hdr to sdr

ffmpeg -hide_banner -y \
-i ./001_red_hevc_3840x1608_60s_yuv420p10le_44MB.mkv -map 0:v:0 -c:v hevc \
-filter_complex "[0:v]scale=3840:1608,zscale=t=linear:npl=55,format=gbrpf32le,zscale=p=bt709,tonemap=tonemap=hable:desat=0,zscale=m=bt709:t=bt709:r=tv,format=yuv420p[out]" \
-map "[out]" \
-colorspace "bt709" -color_trc "bt709" -color_primaries "bt709" \
-sc_threshold 0 -g 240 -keyint_min 240 -vsync passthrough -preset:v fast \
-max_muxing_queue_size 9999 -analyzeduration 10M -probesize 50M -movflags faststart \
./002_red_hevc_sdr_fc.mkv

Clearly, the -vf and -filter_complex executes the same command, but -vf looks closer to HDR, someone don't believe can use the video to try the command
https://files.videohelp.com/u/302682/001_red_hevc_3840x1608_60s_yuv420p10le_44MB.mkv

so, guys, I'm so encompassed with the -vf and -filter_complex, thanks someone who can solve it.

[Selur]

When adding '-loglevel trace' and comparing the output of those calls it seems like the filter_complex somehow also handles the audio,...
Adding '-an' to the command line seems to fix the differences in the text trace output, but it still seems like tonemap doesn't work when using filter_complex.
No clue why. ¯\_(ツ)_/¯

[pandy]

filter complex is used in cases where there is multiple inputs/outputs (and they not match) - it may be some silently called for example sws_scaler conversion somewhere

[KaGaWu]

actually the question has not been sloved until now, but thanks all relpies.