banner.bin is the final banner file, built from the banner folder.
On the latest blargVC version, banner.bat generates this file after you're finished with Ohana3DS, and saves it on output\<game's title>\banner.bin.
If not found during the CIA making proccess, a "blank" banner.bin will be generated by make.bat.
This file used to be deleted once the CIA was created, but now it remains intact on the game's output folder.
Looks like you're using an older version of blargVC.
Thank you.
I have a request:
I have too many JPEG images in different folders to convert to PNG.
Can you add JPG/JPEG support to your tool please?