Render times of regions do not add up?
 

Ok, this is a little confusing to describe, I'll do my best.
I have a project that on the timeline reads as 1 hour, 8 minutes. Now, I have rendered it into 4 parts that equal up to the same time.
However, when I rendered to mp2 for blu ray, the final mp2 reads as 56 minutes. ( when right clicking properties )
HOWEVER, when burned to a blu ray, it reads as 1 hour 8 minutes.
Wtf?
Why does this mp2 not read as it should, and what's weird is I loaded the mp2 and the wmv side by side with media player and VLC, played them and they were in sync, but, if I try to just jump to a spot in time with the two players, they won't be in sync.
Does that make sense?