backgroundOpacity

Specify the opacity of the background rectangle. Enter a value from 0 to 255, where 0 is transparent and 255 is opaque. If Style passthrough is set to enabled, leave blank to pass through the background style information in your input captions to your output captions. If Style passthrough is set to disabled, leave blank to use a value of 0 and remove all backgrounds from your output captions. Within your job settings, all of your DVB-Sub settings must be identical.