[Bryville]

I was just curious to know, how much memory would iPhone 4 HD recording take, say a 1 minute video?

(Sorry if already posted, couldn't find anything else.)

[JustinHorn]

I'm estimating 118 MB per min of 1280 x 720 HD recording. There are some variables though, like what compression ratio they will use on the iPhone 4, but if it's similar to the 3GS then this should be a pretty close estimate.

Check out this long boring post I put together for more details
With iPhone 4’s improved camera and HD video, should I go 32GB? (updated) | When Will Apple?

[Bryville]

Thanks!
You've really helped!

[snakes2003g]

good thing they bumped up my upgrade up even more cause since they did that i am getitng the 32GB model for sure.

[Jellotime91]

I'm betting they are using a much more efficient compression for HD than the 3GS used for VGA.

Flip can record 1hr of HD video in 4GB. I'd imagine iPhone 4 uses compression exactly like this or better.

[JustinHorn]

When I did these calculations last year for the 3GS my higher end estimate for the compression ratio was 60:1. Using this it would be more like 79 MB / min, or 4.6 GB / hour.

[DataCentre]

Looks like I'm going to be getting the 32GB phone.

[Luckyi]

I just convinced myself to just stay with the 16GB and save money, but after reading this I may have to just get the 32GB now. Ahhh!!

[JustinHorn]

UPDATE
Looks like Apple did step up the compression ratio closer to 60:1 as a sample video that leaked out shows it's about 83.4 MB / min.

The pics are 2.7 (close to my 2.7 MB guess).



More Here:
iPhone 4 picture and HD video sizes confirmed, gets upgraded video compression | When Will Apple?