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27187 Views 11 Replies Latest reply: Oct 27, 2010 12:40 PM by Heaven Club
Currently Being ModeratedAug 31, 2010 10:49 AM (in response to MBP KM)The iphone uses the FAT file system. That particular file system has a 4GB file max size limit. Your approximate time is accurate though you should be able to record about 50 mins before it becomes an issue. I was worried about this limitation until I realized I'd never need over 50 mins of video. For someone recording an entire soccer game or something else though I could see it becoming a problem.iOS 4
Currently Being ModeratedAug 31, 2010 11:01 AM (in response to wakeboarder3780)
The iphone uses the FAT file system.
Are you serious?
iOS is derived from Mac OSX, with which it shares the Darwin foundation, and is therefore a Unix-like operating system by nature.MacBook Pro
Currently Being ModeratedAug 31, 2010 11:13 AM (in response to MBP KM)AFAIK, the recoding limit is around 50 minutes, as you've observed, most likely done to conserve battery. 50 minutes of recording would most likely eat up about ~40% of your battery.MacBook Pro
Currently Being ModeratedAug 31, 2010 11:34 AM (in response to wakeboarder3780)The iPhone runs an optimized version of OS X, so it does not use the FAT file system. MacBook Pro 15" Intel Core 2 Duo/2.53GHz/4GB RAM/500GB HD, Mac OS X (10.6.4), iPod w/Video 30GB, iPhone 4 32GB
Currently Being ModeratedAug 31, 2010 11:51 AM (in response to Allan Sampson)Since when does the fact that it runs on <insert OS here> mean it's not running on <insert file system here>? Would either of you care to state what fs it is running on since you're so certain it's not FAT?
Also, they would not make a time limit / file size restriction off of battery alone - what if someone had it plugged into the wall while recording? What about newer versus older batteries.iOS 4
Currently Being ModeratedAug 31, 2010 11:51 AM (in response to wakeboarder3780)It has everything to do with it. FAT is a DOS/Windows file system.
The iPhone (and iPod Touch) run an operating system known as iOS (formerly iPhone OS). It is a variant of the same Darwin operating system core that is found in Mac OS X which uses HFS+, not FAT. MacBook Pro 15" Intel Core 2 Duo/2.53GHz/4GB RAM/500GB HD, Mac OS X (10.6.4), iPod w/Video 30GB, iPhone 4 32GB
Currently Being ModeratedAug 31, 2010 12:01 PM (in response to Allan Sampson)Ok my mistake, I see what you're saying. But truly a file system is separate from an operating system right? I mean I could write whatever OS I wanted to run on whatever fs I wanted right?
In any event the max file size of HFS+ is absolutely massive - we're talking Exbibyte size. So I'm a little confused why it's hovering so close to a max file size of 4 GB.iOS 4
Currently Being ModeratedAug 31, 2010 12:08 PM (in response to wakeboarder3780)
So I'm a little confused why it's hovering so close to a max file size of 4 GB.
Because that's the way Apple designed it. Again, as already pointed out, most likely to conserve battery, but Apple seldom discloses the why's & if's of its design limitations.
The iPhone is, after all, primarily a phone, not a dedicated video recorder.MacBook Pro
Currently Being ModeratedAug 31, 2010 12:27 PM (in response to wjosten)The only reason I am still hesitant to believe it was a purposefully imposed limitation is that every reason I can think of wouldn't really solve the problem.
For instance if they were trying to solve battery life problems - the user could just start up another video immediately after and drain their battery. They could also just plug in the phone as they record and the issue they would be so worried about isn't even a problem anymore.
If they were trying to solve heat generation (the phone does get a little warm when taking videos) the user again could just start up another video and the heat would continue.
As far as using the thought of the iphone not supposed to be used as a dedicated video recorder, I would ask why not? Isn't a smart device supposed to be giving us the functionality of multiple devices in one? Who says if you get a smart device that it needs to be mediocre at everything? Shouldn't the main goal being us using our "phones" as a dedicated video recorder? And a dedicated mp3 player? And a dedicated camera? I don't think anyone goes out to make a smart device that is only sub-par at it's tasks. If a company could create a smart device that was great at everything they would take the market by storm and in effect that's what's happening.
I bought this phone because it was the best at X. Someone else might want it for Y.
About the only thing imposing a file limit solves is - enforcing smaller file sizes. But I fail to see how big file sizes are a problemiOS 4
Currently Being ModeratedOct 27, 2010 12:40 PM (in response to wjosten)I ran into the same video size limit problem. I was beginning to think I was the only one.
So, I replaced my iPhone 4 Saturday thinking that the limit of 4 GB was due to having a faulty phone or early version (I bought it on Day 1). The replaced phone also stops recording when it approaches 4 GB.
During normal HD recording that amounts to just shy of 50 minutes (49 min, 51 sec). When I left it on faced down on my night stand one night (recording black) it lasted for over 3 hours, but also stopped when the file size approached 4 GB.
I have a 32 GB iPhone 4 and purchased it in part to record videos of 2-3 hours in length. I was planning on reserving up to 16 GB in the phone for this.
I placed an enhancement request asking Apple to remove the 4 GB file size limit.iPhone 4, iOS 4