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Coarse

macrumors newbie
Original poster
Jan 13, 2013
3
0
I have aplle TV hooked up to my 1080p TV, streaming a hd movie from iTunes. The Internet speed is between 15-20 Mbps. How many megabytes/ gigabytes should be chewed up for a 2 hour movie? How many gigabytes for a regular movie?
Appreciate if someone can tell me how to calculate that in general?
 

TJ61

macrumors 6502a
Nov 16, 2011
811
3
Not sure exactly what you're asking, are you asking what's the minimum speed to stream an HD or SD movie?

At a GB per hour, the speed would be (1000MB / 3600s) x 8 b/B = 2.2 Mbps

HD movies are probably about twice that, and SD may be a little under that.

If the movie is already in iTunes, it's not your internet speed that matters, but your wifi speed (or is that what you meant?).

Regards,
Tom
 

musicpenguy

macrumors 68000
Oct 29, 2006
1,817
725
Just look on your Mac or Windows box - the download size is the streaming size. So 3-10GB for HD movies 1-3 GB for SD.
 

Coarse

macrumors newbie
Original poster
Jan 13, 2013
3
0
Not sure exactly what you're asking, are you asking what's the minimum speed to stream an HD or SD movie?

At a GB per hour, the speed would be (1000MB / 3600s) x 8 b/B = 2.2 Mbps

HD movies are probably about twice that, and SD may be a little under that.

If the movie is already in iTunes, it's not your internet speed that matters, but your wifi speed (or is that what you meant?).

Regards,
Tom

All I wanted to know is how many gigabytes should a movie chew up from say an 80 gb allowable limit
 

wharzhee

macrumors 6502
Apr 27, 2010
279
0
texas
All I wanted to know is how many gigabytes should a movie chew up from say an 80 gb allowable limit

It varies.

eg1: JAWS [HD] ~2hrs05mins is abt ~4.6gb(1080p) : so 80gb limit would give u about 17movies
eg2: Five Year Engagement[SD] ~2hrs05mins is abt ~1.9gb: so 80gb limit would give u about 42movies

Does that answer ur q?
 
Last edited:

TJ61

macrumors 6502a
Nov 16, 2011
811
3
All I wanted to know is how many gigabytes should a movie chew up from say an 80 gb allowable limit

Ahhh, your internet speed was the red herring, I guess.

Anyway, if you look on iTunes on your desktop (not on the iPad, it seems), it will tell you exactly how many GB a movie is in HD AND SD, so no guessing is required. But, if you don't have a particular movie in mind, the answer was still there: about 1GB/hour for SD, and 2GB/hour HD.

Regards,
Tom
 

Ratatapa

macrumors 6502a
Apr 3, 2011
665
25
All I wanted to know is how many gigabytes should a movie chew up from say an 80 gb allowable limit

SD movies usually taake 400mb-1.5gb
720P between 1.5-5 gig
and 1080 3.5-10gig

Depend on the movie compression
 

Coarse

macrumors newbie
Original poster
Jan 13, 2013
3
0
It varies.

eg1: JAWS [HD] ~2hrs05mins is abt ~4.6gb(1080p) : so 80gb limit would give u about 17movies
eg2: Five Year Engagement[SD] ~2hrs05mins is abt ~1.9gb: so 80gb limit would give u about 42movies

Does that answer ur q?

It gives me a pretty good idea, thanks

----------

SD movies usually taake 400mb-1.5gb
720P between 1.5-5 gig
and 1080 3.5-10gig

Depend on the movie compression


Ok, thanks
 
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