I'm really interested in using the iPhone 4 for shooting short HD videos. I'm debating whether or not I need the 32GB model. How much space do you think 720p 30fps HD video will take up?
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iPhone 4 HD Video File Size
- Thread starter topher2889
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A good friend of mine once said back in high school, "It's best to have left over than come up short"
I went with the 3GS 32GB because it was biggest size and even though I didn't need the huge space at first, I now have had use for it to a point where I am down to my last 5GB of space on my 32GB. Videos, photos and other stuff (non-media) do add up.
I bought the 32gb 3GS because I wasn't sure how much space I needed. I've never gone over 16gb full so I could have been fine with the 16gb, but I like to future proof myself so I will be getting the 32gb 4th gen as well. If the $100 doesn't kill you, I'd say go for it. You will most likely get that $100 back if you ever choose to sell it again anyways.
I think it's a no brainer that $100 is worth the extra 16GB that you could potentially be using for the next 2 years. $100 for me is less than a day's work which is so worth it for me to store another 2000 songs, or several movies or videos, apps, etc.
So worth it.
So worth it.
Alot! That is why I don't understand why Apple didn't release a 64GB iPhone. If you are going to have HD recording, then you need a lot of storage space and 32GB just won't cut it.
If Apple could have, they would. 64 GB chips are too few and too expensive right now.
If they're anything like the iTunes 720p movie compression techniques, we're screwed. iTunes makes their 720p movies the same size as I can make a 1080p movie.
An amazing new compression technique would be H.265, and if Apple had finalized that, you can BET that we'd've heard about it immediately in the keynote.
H.265 isn't done yet.
Well, my Flip MinoHD is 8 GB and can hold 120 minutes of HD 720p footage .. so 20 minutes shouldn't be more than 1-2 GB depending upon the differences between Apple and Flip. Just a benchmark though..
I shot a video with a lower-model PS and got about 2GB on 640x480 video. My battery was about to crap out before my 4GB card did, so I'm assuming a 32GB iPhone 4 can hold plenty of video. Most people won't shoot long videos with a phone, so I don't think it should be a problem.
As far as whether you should get more storage, ALWAYS GET MORE STORAGE. I could solder a 1TB drive to this phone and find ways to fill it. The only people who can get away with 8 or 16GB are people who would never use it for iTunes stuff or those weirdos who only put about 500 songs on there. Freaks!
No. 11.8 is much, much too small. One 720p hd image is already a pretty good size. We're talking 30 720p images per second.
118mb sounds right.
You do realise that that bitrate is 2MB/s? That's just below the average bitrate of a 1080p movie on a Blu-ray.
I'm going to say 10-20MB/minute. A video off youtube I got is 15MB/s, that that's with black bars ().
The average bitrate of a blu-ray is somewhere between 10 and 30 Mb/s. A film usually clocks in at around 20GB. Divide that over 2 hours, you're looking at 166MB per minute. Knock a bit off for the difference in resolution and I can totally believe 110MB per minute.
So 1080p = 48 Mbit / s * 1 MB / 8 Mbit = 6 MB / s
My calculations are pretty close, the only thing I don't know is the compression ratio. If you use the high end of the range of the compression ratio of 60:1 (vs the 40:1 I used) it comes out to about 79 MB/s.
I could be wrong, but I feel that the real storage size will be between 79 and 118 MB / s. There is no way it could 10-20 MB / s.
Here is a link to my post if you want to "see my work" http://whenwillapple.com/blog/2010/...mproved-camera-and-hd-video-should-i-go-32gb/
