This fails on a FIPS enabled machine with the following error
fips.c(145): OpenSSL internal error, assertion failed: FATAL FIPS SELFTEST FAILURE
Minimal Reproducible Example
$ python3.11 -m venv .venv
$ source .venv/bin/activate
$ pip install av
...
Successfully installed av-14.2.0
$ python -c "import av"
fips.c(145): OpenSSL internal error, assertion failed: FATAL FIPS SELFTEST FAILURE
Aborted