Why do full-length movies stream faster than iPhone videos?

Discussion in 'Apple TV and Home Theater' started by HarryKeogh, Aug 7, 2013.

  1. macrumors 6502a

    Joined:
    Jun 25, 2008
    #1
    Hi guys,

    So I have full-length movies (some ripped from DVD, some downloaded) and short videos of the kids taken with my iPhone (these were originally imported into iPhoto and I copied them into iTunes) in my iTunes library.

    Any ideas why when I watch them on my Apple TV it takes just a few seconds for the movies to start playing but the home movies shot with the iPhone to slowly load and not play for over a minute after I hit "play"? Both play nice and smoothly but why does a one-minute clip take so long to get going?
     
  2. JAT
    macrumors 603

    Joined:
    Dec 31, 2001
    Location:
    Mpls, MN
    #2
    DVD at 480i60 resolution? Vs iPhone at 1080p30 resolution?
     
  3. macrumors 6502

    Joined:
    Apr 21, 2004
    #3
    I have the exact same problem. Full HD movies streamed over wifi from my iMac start instantly, but a short 30 second video clip of my son streamed from my iPhone over Airplay takes up to 2 minutes to start playing.

    I've heard that this is actually an issue with a setting on the wireless router, but obviously I haven't done the research yet to make the change.
     
  4. macrumors 68000

    Joined:
    Jan 13, 2011
    Location:
    Estonia
    #4
    Have you checked, what kind of bitrate does iPhone camera produce?
    It's over 21Mbps, VBR, 1080p@30fps.
    That data rate is 1/2...2/3 of that of a BluRay movie!
    ~2.5MB/second.
     
  5. thread starter macrumors 6502a

    Joined:
    Jun 25, 2008
    #5
    I'll have to check these settings when I get home. Thank you both.
     
  6. macrumors 68000

    Joined:
    Jan 13, 2011
    Location:
    Estonia
    #6
    Unfortunately, I don't know of any way to control this while recording. You only can recode in post to a lower bitrate.
    PS the 21+Mbps rate I referred to, was from my 8Mp camera of 4S. 5Mp of iPhone 4 ought produce less than that.
     

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