I 'm sure those bars are there to account for TV overscan. This way, you're not losing information on either side of the image when you play it back on a CRT TV. 
EDIT: NM, I see there's a contrast difference between the black in the letterbox sections and the side bars. Hm...interesting. 
Post #582911
- Author
 - Mavimao
 - Parent topic
 - Info Wanted: Help, I'm new! :/ (looking for a good OOT preservation)
 - Link to post in topic
 - https://originaltrilogy.com/post/id/582911/action/topic#582911
 - Date created
 - 25-Jun-2012, 9:37 AM