Just a suggestion for a button, perhaps under the Output area for the Output Settings, to allow the user to quickly click it and change the Output Folder to the Source Folder (the same directory that the original opened video file is in).
Or perhaps an Option in the Configuration, to be able to set (in addition to the Default Folder that is there) an option for "Source Folder" - so that a user can quickly just convert/save to where the original file is (currently, the folder is remembered, but it is always the last one used by the program).
If there is a way to do this easily in the Program, I may have just missed it - merely suggesting - enjoying Bandicut otherwise, great program!