scottb613, when you set up your recording, you can use the optional arguments to enable the use of firing. https://community.bistudio.com/wiki/BIS_fnc_UnitCapturehas the full function line. The example they provide is
[bIS_Vehicle, 50, 30, true, 10] spawn BIS_fnc_UnitCapture;
Which would capture data from a unit named BIS_Vehicle, would capture for 50 seconds, would capture at 30 FPS, and would also record the unit's weapon fire data as well. Frame time offset would be 10 seconds.