So there's been a debate about this for a while because I'm partially in the media industry with what technology I work with... What most don't understand is that when 4K capable devices came out, there really was a limited number of things that you could actually use to display 4K resolution content. Even now, how many movies out there actually support 7.1 surround audio? or higher than 1080p resolution? Granted, that standard is slowly being raised, and 4K will probably be the standard, in 2-5 years. Off the top of my head, the first would have probably been a computer, being transmitted onto a projector capable of 4K resolution (only a high end and probably one of the more expensive projectors). There are more devices becoming mainstream however now, moreso than there was a year ago when Sony first came out with their $25,000 4K TV which was promoted at Cedia 2012. (Youtube is actually now supporting 4K video for those of you who don't know yet.)
This will be a bigger thing once we either come out with much better video compression and encoding, OR, the standard for disk space becomes raised by maybe 2-10x. One of the first 4K demo content put out there, a video/movie, is about 330GB alone:
TimeScapes - Buy the Movie
And you can buy it for roughly $270. :thumbsup2: It would be a waste of time though if you have a device that only supports 1080p or 720p though because that is going to be scaled down from 4K to 1080p or 720p anyways, just so you know. (You'd be surprised how many people out there think that just because they have a 1080p TV it makes a difference if they are only receiving component video or video content lesser than 1080p lol.)
Anyways, I was looking around for some free content that I could download, just so that I have a video in case I need a high resolution video for a demo to one of my customers, or I'm testing a high resolution projector in the future... I found some now, but this would probably be one of the best ones if I felt like spending almost $300.
Just thought I'd share.