A:Answer In the Manual, It states what the longest Program you should make with this unit. It States a Time More Than 1 hour, But LESS than 2. This allows for processing of video. ALSO, check your HD Free Space, If it is less than 30 to 50 GB, it will slow down the conversion. On larger Files, you cant use your computer to surf the Web & convert a program - Editing may need 50 GB free space and Program can not exceed the Time stated in instructions. I make Part 1 & 2 out of a 2 hour video.