dave, 
I setup a runner for my Forgejo instance on our home server (an intel 2018 Mac mini).
My unit tests for my video pipeline check the output of the pipeline, against a previous output. Images snapshotted to png.
All the tests fail on the home server. They pass on my M2 Studio. The output images appear the same, no major fail in the pipeline.
My suspicion is this is a png encoding difference in the simulator between intel and apple silicon 🧐