on_camera_lost 
 
-  Type: String
-  Range / Valid values: Max 4095 characters
-  Default: Not defined
-  Group: Script Execution
Command to be executed when a camera can't be opened or if it is lost. You can use 
Conversion Specifiers and spaces as part of the command. Use %f for passing filename (with full path) to the command. (new in 3.2.10), Command to be executed when a camera can't be opened or if it is lost. You can use 
Conversion Specifiers and spaces as part of the command. Use %f for passing filename (with full path) to the command. (new in 3.2.10)