[Osx-nutters] 15 for this?

Kevin Callahan kcall at mac.com
Wed Sep 13 17:25:16 CEST 2006


On Sep 13, 2006, at 6:57 AM, Shawn Erickson wrote:

>
> On Sep 12, 2006, at 11:30 AM, Kevin Callahan wrote:
>
>> $15 for this resolution?
>>
>> With iTunes 7, all videos purchased from the iTunes Store are  
>> downloaded in near-DVD quality at a resolution of 640x480 (up to  
>> 480, depending on the aspect ratio),
>
> Most "library" Movies are $10, new releases are $15 unless you pre- 
> order or buy them in the first week then they are $13.
>
> <480px-Standard_video_res.svg.png>
>
> In the end you are getting near NTSC resolution (with a frame rate  
> of 24p) with decently high-quality encoding (and of course stereo/ 
> surround) audio). Most folks won't notice much of a difference  
> between what you get and your average DVD. It is a simple matter of  
> balancing quality / resolution against the fact of how large the  
> downloads would be. If you jump up to 720P then you are talking  
> about an increase over 2x in the data rate assuming you maintain  
> similar level of compression in the encoding.
>
> Recall that your average DVD uses MPEG-2 (which isn't as good as H. 
> 264 at the same data rate) and it could even contain video encoded  
> at 352x480, 704x480, or 720x480 with a similar dropping of vertical  
> resolution to allow wide screen formats.

great ..
thanks

K




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