Andrea, thank you for this list.  Results are a little strange.  I have a local modified version of ffmpeg/plugin.opts to comment out aap and fsync which were giving errors on a fresh startup with ffmpeg 7.0.  Also commented out tiltandshift which as you noted gives an error message -- but does something anyway.  I tried varying parameter values to see if there was something that would not generate the Resource Temporarily Unavailable error message but there doesn't seem to be one.