try to delete first "l" ... so it become "pkg-config --cflags SvtAv1Enc"
I did several tests with system libaom and with Intel svt. One thing for sure is that when I tried to compile with svt I always got crashes. I don't know if it depends on the fact that I don't have Intel hardware. I attach cin5_aom_svt.log as an example, it was produced using the following libaom.sh: #!/bin/bash export FFMPEG_EXTRA_CFG="--disable-debug --enable-libaom --enable-lSvtAv1Enc" \ export EXTRA_LIBS="-laom -SvtAv1Enc " ./configure --with-single-user --with-config-dir=/home/paz/.bcast6 --disable-libaom Trying to use system libaom (without svt) the compilation succeeds. Renders are comparable to those obtained with patch 3.8.0 for internal ffmpeg. The results however are very variable: efficient with image sequences, slower with video.