This is a GGMax internal script, it sits in "scriptbank\markers\videoinzone.lua" Ignore what it does posted in Pastebin or whatever place out of GGMax.
"radar_hideallsprites", and "radar_showallsprites" should be other LUA commands undocumented in global.lua file, at least I don't have them in my global.lua file.
I think GGMax freezes the player when playing vid and unfreezes him when done.
Try adding videozone to your map to see what happens.
It does not, so, you can make a feature request on GitHub.
Laptop: Lenovo - Intel(R) Celeron(R) CPU 1005M @ 1.90GHz
OS: Windows 10 (64) - Ram: 4 gb - Hd: 283 gb - Video card: Intel(R) HD Graphics
cpu mark: 10396.6
2d graphics mark: 947.9
3d graphics mark: 8310.9
memory mark 2584.8
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