in that case go to File > view/edit config file and add the following and add the following somewhere under [options] but before [paths]
ENABLE_TEST=1
ENABLE_BLANKING=1
save
now to start blanking under "Mode" select "Movies & Menu's"
when you load a movie in bdrb simply under the stream tab, double click the movie name and in the top right corner [Edit Mode] should appear indicating you are in the "blanking mode"
BDRB will automatically mark streams in a grey "block" it thinks are trailers etc and in 99% of the cases it's spot on. The other 1% sometimes a menu can get marked for blanking (something to do with how the menu is built i suppose) or some trailers arent. For that reason i play the movie first so i know what the trailers look like & the menu so the wrong streams don't get blanked out or overlooked. that's where the preview comes in handy. Rightclick a stream it marked in grey and click "preview this item". an mpc window will pop up and start playing the stream. If its good (copyright messages, trailer crap), leave it in the dark grey. If ya don't want it blanked then rightclick the stream again and untick "blank this item". I do this for every stream it marks.
sometimes it doesn't mark trailers, to make sure those get blanked too i preview streams under 500MB aswell, most trailers are only a few minutes long and are arround 2-500MB in size. So if i then encounter such an unmarked trailer in preview, ya rightclick it again and select "blank this item".
When ur done previewing, hit "backup"
Now on a very few discs, blanking sometimes cause the disc to "hang" at a black screen. this is usually because a "transition stream" i call them got blanked which it really needed. if that happens i just do the normal "full disc" backup mode instead of figuring out which stream it is, but it's usually very small streams of a1-3sec clip of black screen)
another few handy config options
alot of the hidden options you can find in the bdrb installation folder in "hiddenopts.txt" but these are the ones i use
COMPLETION_BEEP=1 (makes bdrb use a system sound alert when a job is complete, esp handy when ur in another room watching tv or somethin during an encode)
BEEP_SOUNDFILE=<insertpath> eg: BEEP_SOUNDFILE=C:\Program Files (x86)\ImgBurn\Sounds\Success.wav (tells bdrb to use the IMGBurn "burn complete" sound instead of the sytem default to notify a job is complete)
OUTPUT_FOLDER=<insert path> (tells bdrb to move the finished output out of the working path and into a specified path, in my case i have the following: Source path (varies depending on the vcd used); Working path: C:\Temp and hidden option OUTPUT_FOLDER=C:\BDRB Rebuilds. This tells bdrb to move the finished output out of C:\Temp and into C:\BDRB Rebuilds folder where i store my finished rebuilds. That way i don't have to dig arround the clutter in my encoding temp folder where i do more than just bdrb encodes. All completed jobs are stored nicely in C:\BDRB Rebuilds)
