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I have 7GB free. If I give that to someone to record, what sort of ballpark figure would I get for a HD video recording? There may be about 10 individual videos being recorded over a couple of hours, if that makes a difference. Maybe just one hour long one.

I just want to know a rough figure but ideally with some maths so I can work it out myself.

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Somewhat a duplicate of apple.stackexchange.com/questions/15642/… – jmlumpkin Jun 13 '11 at 12:26
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Doesn't look like a duplicate to me, @jmlumpkin. But it sure is related. – Cawas Jun 14 '11 at 14:22
The reason I think it is a duplicate is the update to the question. – jmlumpkin Jun 14 '11 at 17:30

2 Answers

up vote 3 down vote accepted

The iPhone 4S takes video at 1080p and 30 fps and initial tests are showing that video takes 200MB per minute. At roughly 12 GB per hour, what seemed staggering a year ago is now quite quaint with the iPhone 4 recording at less than 5 GB / hour.

MacWorld reports that an hour of iPhone 4 video is 4.8 gig.

The iPhone records its 720p HD video at around 10 megabits (Mbps) per second. That translates to about 80MB per minute, as we noted above, or a staggering 4.8GB per hour. (Hope you sprung for the 32GB model!)

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No, I didn't get that version but I have way enough space to capture what I need - thanks! 4.8GB! Wow! Apple didn't mess about there! – Neil Trodden Jun 14 '11 at 12:36
That "hope you sprung" was from the article. I'm perfectly happy with my 14 GB iPhone 4. – bmike♦ Jun 14 '11 at 17:00
up vote 0 down vote

It's impossible to estimate without looking at the footage first, or at least having a description of what will be shot (a crowd of people running around at Grand Central or 2 people sitting on a bench), the lighting conditions (night, with no lights, or day), the way it will be shot (on a locked tripod or over the shoulder, panning left and right like a maniac), etc...

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