How to watch YouTube 4k contents on this? Can the roku4 do it? Or do you need a dedicated htpc ? I don't think any raspberry-pi can handle 4k playback right?
According to the ads on TV, my football games are so stunning in 4k that all of the motion in the room will freeze as numerous disasters unfold, but we will all be oblivious because the 40" 4k screen 20 feet away on the kitchen wall is so awesome. I don't even remember our cable company telling us that the networks were broadcasting anything in 4k, let alone live events. Maybe my lack of a 4k TV is why CBS Football games look so crappy when there is a lot of motion, not because the game, which are actually 720p, are just being processed through crappy 10 year old equipment that can't handle the bandwidth.
4k is cool, but there simply is no content available. Even 1080p is simply stunning with the right source material (Samsara is incredibly beautiful on my 58" 1080p Plasma), but most material simply isn't going to have a huge impact visually beyond 1080p.
That said, my attitude is that if I need to replace a TV or monitor, I certainly will go for more resolution if it's available (4ks are cheap), but I'm not going out of my way to replace my existing, perfectly working HDTVs.
It will probably be a few more years before content is plentiful for 4k. YouTube and Netflix do currently have streams at 4k, but I can't imagine the bandwidth cost of that (and it's still super compressed, at that) - and yes, you need specific devices to take advantage of that. An HTPC will certainly work. Raspberry Pi, not at all. You'll probably be disappointed, however, if the source material isn't up to par for 4k playback (most films, particularly older ones, are too grainy to take advantage of the higher resolution). Likewise, you can't see much of a difference between 4k and 1080p unless you have a very large screen (80" or better).
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