[Cin] Tried ffv1_vulkan ....

[Andrew Randrianasulu]

It looks like tonemapping ate encoder's lunch ;)

RADV_PERFTEST=video_decode,video_encode time -p ./ffmpeg  -init_hw_device
vulkan=vulkan -filter_hw_device vulkan   -hwaccel vulkan  -i
~/K38_sdcard1/Documents/iPhone11_4K-recorder_59.940HDR10.mov -vf
libplacebo=format=yuv444p:w=1920:h=1080:force_original_aspect_ratio=decrease:normalize_sar=true:upscaler=ewa_lanczos:downscaler=ewa_lanczos:colorspace=bt709:color_primaries=bt709:color_trc=bt709:range=tv
-c:a copy -c:v ffv1_vulkan -slicecrc 0 -level 4 -strict -2 -async_depth 5
-slices_v 32 -slices_h 32 -f matroska -benchmark /dev/null



frame= 1148 fps=4.6 q=-0.0 Lsize= 2302672KiB time=00:00:19.16
bitrate=984419.6kbits/s speed=0.0769x

bench: utime=28.586s stime=20.721s rtime=249.150s

 bench: maxrss=587076KiB

real 251.00

user 28.67

sys 20.79

=====

But may be faster GPU/pcie bus like in Andrea's machine will speed it   up
enough to be practical
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