If true it will downsample the whole screenspace to the videos width and height, otherwise it will just record from the top left corner to the given width and height and therefor not the whole screen.
Example
If ActiveVideo was a IVideoWriter, it would record the screen every frame.
--Taken from /lua/menu/video.luahook.Add( "DrawOverlay", "CaptureFrames", function()
if ( !ActiveVideo ) thenreturnendActiveVideo:AddFrame( FrameTime(), true )
end )
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