hi - encoding really slow

[Selur]

Looking at the debug output:

"C:\PROGRA~1\Hybrid\64bit\ffmpeg.exe" -y -loglevel fatal -hwaccel dxva2 -threads 1 -r 24000/1001 -analyzeduration 200M -probesize 200M -i "E:\movies\The-LEGO-Ninjago-Movie HD.7.1.Atmos\BDMV\STREAM\00002.m2ts" -map 0:0 -an -sn  -vsync 0 -strict -1 -pix_fmt yuv420p10le  -f yuv4mpegpipe - | "C:\PROGRA~1\Hybrid\64bit\NVEncC.exe" --y4m -i - --fps 23.976 --codec h265 --profile main10 --level 5.1 --sar 1:1 --lookahead 32 --output-depth 10 --vbr 6000 --max-bitrate 40000 --aq --gop-len 0 --bframes 0 --ref 3 --mv-precision Q-pel --cu-max 32 --cu-min 8 --output "C:\Users\densma\AppData\Local\Temp\lego movie_19_48_40_7110_04.265"

My guess is that the decoding might slow things down.

When calling:

"C:\PROGRA~1\Hybrid\64bit\ffmpeg.exe" -y -hwaccel dxva2 -threads 1 -r 24000/1001 -analyzeduration 200M -probesize 200M -i "E:\movies\The-LEGO-Ninjago-Movie HD.7.1.Atmos\BDMV\STREAM\00002.m2ts" -map 0:0 -an -sn  -vsync 0 -strict -1 -pix_fmt yuv420p10le  -f yuv4mpegpipe NUL

How many fps do you get?
I get slow speeds since the hardware acceleration doesn't work on my system:

[hevc @ 00000237ac810500] Failed setup for format dxva2_vld: hwaccel initialisation returned error.

which isn't a surprise since my VPU doesn't support 4k HEVC decoding. (+ Hybrid is limiting the decoding threads to 1 due to transport stream input)

In case the hardware acceleration on your system also fails, try whether using any of these:
using cuda:

"C:\PROGRA~1\Hybrid\64bit\ffmpeg.exe" -y -hwaccel cuda -threads 1 -r 24000/1001 -analyzeduration 200M -probesize 200M -i "E:\movies\The-LEGO-Ninjago-Movie HD.7.1.Atmos\BDMV\STREAM\00002.m2ts" -map 0:0 -an -sn  -vsync 0 -strict -1 -pix_fmt yuv420p10le  -f yuv4mpegpipe NUL

using qsv:

"C:\PROGRA~1\Hybrid\64bit\ffmpeg.exe" -y -hwaccel qsv -threads 1 -r 24000/1001 -analyzeduration 200M -probesize 200M -i "E:\movies\The-LEGO-Ninjago-Movie HD.7.1.Atmos\BDMV\STREAM\00002.m2ts" -map 0:0 -an -sn  -vsync 0 -strict -1 -pix_fmt yuv420p10le  -f yuv4mpegpipe NUL

using d3d11va:

"C:\PROGRA~1\Hybrid\64bit\ffmpeg.exe" -y -hwaccel d3d11va -threads 1 -r 24000/1001 -analyzeduration 200M -probesize 200M -i "E:\movies\The-LEGO-Ninjago-Movie HD.7.1.Atmos\BDMV\STREAM\00002.m2ts" -map 0:0 -an -sn  -vsync 0 -strict -1 -pix_fmt yuv420p10le  -f yuv4mpegpipe NUL

using cuvid:

"C:\PROGRA~1\Hybrid\64bit\ffmpeg.exe" -y -hwaccel cuvid -threads 1 -r 24000/1001 -analyzeduration 200M -probesize 200M -i "E:\movies\The-LEGO-Ninjago-Movie HD.7.1.Atmos\BDMV\STREAM\00002.m2ts" -map 0:0 -an -sn  -vsync 0 -strict -1 -pix_fmt yuv420p10le  -f yuv4mpegpipe NUL

works better,...

Cu Selur