Not at all a problem with the math. Depending on the event recorded, memory use required varies all over the place.DirectFeed said:An example of whats happening:
On the DVR, 40 hours of recorded shows (HD). Delete a HD show of two hours in length. Time available on DVR will read something like 41 1/2 hours available.
Doesn't seem the math is good.
In order to estimate hours, the box must make a guess (assumption) as to the nature of what you might choose to record in the future.