iPhone 4 HD Video File Size

Discussion in 'iPhone' started by topher2889, Jun 7, 2010.

  1. topher2889 macrumors regular

    topher2889

    Joined:
    Jun 1, 2007
    Location:
    Wisconsin
    #1
    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?
     
  2. DKTacts macrumors member

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    May 16, 2010
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    MD
    #2
    I'd also be interested to find out about this - the obvious secondary question then is - is the $100 difference for 16gb more space worth it?
     
  3. AbSoluTc macrumors 68040

    AbSoluTc

    Joined:
    Sep 21, 2008
    #3
    Yes to both questions. When it comes to HD video, the more space, the better. If it's only $100 dollar difference - take it and thank yourself later :)
     
  4. jav6454 macrumors P6

    jav6454

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    #4
    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.
     
  5. STEVESKI07 macrumors 68000

    STEVESKI07

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    Jan 6, 2009
    Location:
    Washington, DC
    #5
    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.
     
  6. Khryz macrumors 6502a

    Joined:
    Jan 7, 2007
    #6
    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.
     
  7. patsfan83 macrumors regular

    Joined:
    Apr 6, 2008
    #7
    As an editor, please don't. The last thing I want to start see is people showing up with their "shorts" on their iphone wanting to get it screened at a festival.
     
  8. Resist macrumors 68030

    Joined:
    Jan 15, 2008
    #8
    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.
     
  9. AbSoluTc macrumors 68040

    AbSoluTc

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    Sep 21, 2008
    #9
    As opposed to what other PHONE out there right now that can do the same thing?
     
  10. Cougarcat macrumors 604

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    Sep 19, 2003
    #10
    If Apple could have, they would. 64 GB chips are too few and too expensive right now.
     
  11. Gmcube macrumors regular

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    Jun 19, 2009
    #11
    About how much space would, say, 20 mins of 720p video take up do you think? at most.

    What if they have some amazing new compression techniques?
     
  12. Marty Macfly macrumors regular

    Joined:
    Jun 5, 2010
    #12
    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. :(
     
  13. Khryz macrumors 6502a

    Joined:
    Jan 7, 2007
    #13
    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..
     
  14. g30hd3 macrumors newbie

    Joined:
    Jun 7, 2010
    #14
    My Canon PowerShot SD780IS shoots 720p in .mov format. Shooting for 20 minutes pretty much fills my 4gb SD card completely. So assuming the iPhone will use .mov format then ~80 minutes in high def.
     
  15. Michael CM1 macrumors 603

    Joined:
    Feb 4, 2008
    #15
    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!
     
  16. saccento macrumors 6502a

    saccento

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    Jun 30, 2008
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    New Jersey
    #16
    just get the 32. you never know if you'll need more. better safe than sorry.
     
  17. dizzy13 macrumors 6502

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    Jul 9, 2008
    Location:
    Miami
    #17
    I did a write up on this for my blog and this is what I came up with

     
  18. jav6454 macrumors P6

    jav6454

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    #18
    Way too much per minute. 11.8MB/minute seems right. Not 118MB/minute.
     
  19. lorenwade macrumors 68000

    lorenwade

    Joined:
    Aug 27, 2008
    #19
    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.
     
  20. sammich macrumors 601

    sammich

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    Sep 26, 2006
    Location:
    Sarcasmville.
    #20
    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 ().
     
  21. lorenwade macrumors 68000

    lorenwade

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    Aug 27, 2008
    #21
    I didn't realize that... meh. What do I know?
     
  22. AbSoluTc macrumors 68040

    AbSoluTc

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    Sep 21, 2008
    #22
    What are you saying the average bitrate of a blu-ray movie is?
     
  23. BigMovieGeek macrumors regular

    Joined:
    May 22, 2010
    #23
    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.
     
  24. dizzy13 macrumors 6502

    Joined:
    Jul 9, 2008
    Location:
    Miami
    #24
    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/
     
  25. diamond.g macrumors 603

    diamond.g

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    Mar 20, 2007
    Location:
    Virginia
    #25
    So at 6MB/s for 1080P it would be 360MB/min? Seems a bit steep, no?
     

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