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Posts by 11thIndian

You may be right on that one.
For 720, I see an "HD•SD" icon, while the 1080 files are "HD" only.
Sure, whatever...Right now, the 1080p iTunes vids I've checked out have a data rate of 5159 kbits/s, or 5.16 Mbps. That means there's still LOADS of headroom under the 25 Mbps ceiling if they want to increase the data rate.
It would be interesting to see a grab from the BluRay of this ep as a comparison benchmark. Anyone got it and can throw it up? The thing to keep in mind with all these lower bit-rate codecs is that they always look better in motion than in screen grabs.
I think we should wait to see some side-by-sides of similar frames before judging the quality of the encoding.
It's completely clear. In iTunes it tells you whether it's a 720 or 1080 file. So far in Canada I've only found 1080p tv content.
In this scenario it makes sense because Apple has been pushing AirPlay streaming with the iPad for most of the year. A higher resolution iPad almost demands a higher resolution AppleTV. So as an iPad3 accessory, it makes a lot of sense to introduce this at the event.
Funny... that's what I'd always understood. The ability to play ProRes422HQ files from relatively low speed Firewire storage was only possible because the processor was taking up the slack. But this article from 2007 does seem to agree with you:http://www.appleinsider.com/articles...eo_format.html Specifically it says, "Despite compressing HD footage to a size smaller than raw standard definition video, the codec's demands on the CPU and disk speed are light enough that...
I'm not suggesting they're actually going to use ProRes. I seem to remember an article from a couple years ago about Apple toying with a consumer oriented version of the same idea. But essentially what it comes down to is that in order to deliver a high quality file, you either need to send a large amount of data OR a smaller file with a much more processor intensive codec like ProRes, which I'm figuring is why Apple has waited so long to deliver 1080p. The processors...
A typical SD movie on iTunes is about 1.2GB, and HD movie is about 4.5 (4x the pixels). I was postulating that using the same codec, a 1080 movie would be 4x again or about 12GB.Apple can't compete with blu-ray for raw file size. No one wants to try and stream a 30GB file every time they want to rent an HD movie (or at least not until ISP prices come down). That is the advantage of disk formats; they can code at insanely high data-rates, because it's all kept...
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