[stax76]

I'm trying to pipe from ffmpeg to the crappy SvtAv1EncApp, with avisynth it works using cmd, it sucks that it doesn't work with Windows Terminal and PowerShell, creates distorted output.

With VapourSynth it does not work with cmd either, vspipe doesn't support format conversation apparently. I don't know if the crappy Intel encoder supports y4m input, it's not documented at least.

ffmpeg.exe -loglevel fatal -hide_banner -i aaa.avs -nostdin -f rawvideo -pix_fmt yuv420p - | SvtAv1EncApp.exe -i stdin -n 328 -w 1280 -h 720 -q 20 -b test.ivf

ffmpeg.exe -loglevel fatal -hide_banner -f vapoursynth -i aaa.vpy -nostdin -f rawvideo -pix_fmt yuv420p - | SvtAv1EncApp.exe -i stdin -n 328 -w 1280 -h 720 -q 20 -b test.ivf


edit:

found a way:

ffmpeg -loglevel fatal -hide_banner -f vapoursynth -i aaa.vpy -nostdin -f yuv4mpegpipe -strict -1 -pix_fmt yuv420p - | SvtAv1EncApp -i stdin -n 328 -w 1280 -h 720 -q 20 -b aaa.ivf