Originally Posted by winterspan
Then the HD video source is supposed to be down-sampled to standard definition 480P
and transmitted normally. In other words, iTunes should still play the content --- just not in high definition.
Excellent point. It would be good if it automatically down sampled the HD. Of course.. in that case it won't be much better than the SD version of a movie!
How did this "John" download a HD movie to a laptop? iTunes doesn't allow that - just HD on AppleTV or HD TV shows.
It actually sounds like he had an SD movie... which was then BLOCKED from showing on the projector. What's going on there?
(also note that some SD rentals are higher resolution than others - better than DVD due to more horizontal pixels, but still less than 480p vertically. I wonder if the better quality movies are those that are 'blocked', or some other factor).
edit: rustysoma on the arstechnica discussion says that the new DisplayPort Macs can rent HD movies now. He also wonders whether they can buy HD movies.
Originally Posted by Zandros
That is not required of an HDCP link. HDCP is merely encryption for the data transport stream. It is, however, as I mentioned before, a feature that can, if the studio wants to, be enabled for AACS encrypted video. And it still doesn't resize to 480p, it resizes to a maximum of 960×540. iTunes Store video is encrypted with FairPlay DRM, not the AACS encryption scheme used for Blu-ray and HD-DVD.
Are you saying Apple doesn't have this option since the movies are not AACS encrypted? Or just that it's currently only available on some AACS content? It would be nice to have this option.
Personally I watch rented movies through my laptop's DVI (via HDMI), and I assume my MBP's DVI can not support HDCP but I may be wrong.
Thus I'm wondering whether
1) Some of my SD movies will become blocked due to HDCP problems
2) My system will continue exactly as it is now (any SD is fine, plus HD TV shows).
3) Due to HDCP support, I'll be able to get HD movies...
4) Due to HDCP problems, I'll get HD down scaled to 540p.
The #1 is my current worry
But it sounds like only those with new MBPs are currently in that boat!