Why an extra minute on P2 card overcranking?

[ChipG]

I have a 16 gig card, in 720 60fps mode I get 17 minutes of recording time on my P2 card, when I go to 24fps mode and overcrank to 60 fps I get 18 minutes of recording time.

They are both recording at 60fps...

Anyone know what's up with that?

[Luis Caffesse]

No audio when overcranking?
That could give you some extra space.

[ChipG]

Bingo Luis!!!

I always wondered why.