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Old Aug 7, 2013, 10:06 AM   #1
HarryKeogh
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Why do full-length movies stream faster than iPhone videos?

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?
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Old Aug 7, 2013, 11:56 AM   #2
JAT
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DVD at 480i60 resolution? Vs iPhone at 1080p30 resolution?
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Old Aug 7, 2013, 12:40 PM   #3
Madmic23
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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.
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Old Aug 7, 2013, 01:24 PM   #4
priitv8
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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.
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Old Aug 7, 2013, 01:53 PM   #5
HarryKeogh
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Quote:
Originally Posted by JAT View Post
DVD at 480i60 resolution? Vs iPhone at 1080p30 resolution?
Quote:
Originally Posted by priitv8 View Post
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.
I'll have to check these settings when I get home. Thank you both.
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Old Aug 8, 2013, 03:52 AM   #6
priitv8
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Quote:
Originally Posted by HarryKeogh View Post
I'll have to check these settings when I get home.
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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