letterboxing built into the video so DVD players show them correctly. Since that loses some pixels up front, they require using higher quality levels to prevent visual lossiness.
Letterbox and pillars baked-in actually has very little, if any, impact on filesize or quality, when encoding from the same source and settings (other than the one dimension that was trimmed)











Me at 18 in 1980’s: “wtf is a bitcoin?”