Originally posted by astron
4K is amazing, don't misinterpret what I wrote. I'm an advocate for UHD and think it definitely has a place today, for the reasons you've listed. I've seen some amazing detail from downsampled 4K footage compared to poorly binned HD footage. HEVC is the mistake here, since Samsung decided that it was the right way to go and it's clearly not. You can't natively encode/decode or even edit without transferring to another codec first (which takes an eternity. I don't think there's even a GPU that can process HEVC in an accelerated capacity yet.
I've seen high performance gaming-orientated hardware utterly choke on HEVC playing back through DivX. So, you could go with a GH4 which works everywhere, right now in UHD, or get the NX1, which can't integrate into your workflow without intensive conversion. Why would anyone chose to add hours onto their workflow? HEVC will be the future, but it's still at least 3 years off—but, when the video professionals of today can't do diddly with it, what's the point?
I kind-of disagree with your sensor analysis. While Samsung's APS-C sensor in the NX1 seems like it's among the best, it's still not as solid as what Sony can produce. Again, the D810 is a prime example. Thank you for pointing out the insanely fast sensor readout ability of the NX1, that was a nice development on Samsung's part. But, Sony's impetus is its customers and seemingly not so much its own roadmap. While they save some new innovations for themselves first, the best stuff always finds its way into competing cameras from Nikon, Ricoh, Olympus...even now Canon with the PowerShot G7X. Samsung has no such force driving it, and, as such, I don't think they'll feel compelled to up the ante past the sensor in the NX1 any time soon. Compound that with a tightening wallet for 2015 and I think we'll see Samsung refocusing on key areas of the business and letting the wheels spin on stuff like cameras where it isn't a huge player yet.
I really don't think it will take that long to get 4K HEVC decoding support. The nVidia GTX980, albeit expensive, is supposed to support both decoding and encoding 4K HEVC. There are several decoder units for mobile phones that are supposed to do 4K HEVC decoding. Clearly Samsung must have something like that in the NX1. I could imagine there'll be an add-on card/USB stick that adds a HEVC decoder at a reasonable price point. UHD Blu Ray will be using HEVC, and for all the 4K TVs to make sense they need HEVC support soon. The market is moving in that direction, quickly, and it is technically possible to do it.
HEVC just gives you better quality, and proper 10 and 12 bit support... including hardware actually capable of doing that! Yes, h264/AVC have had 10 bit support for something like 5 years, but no hardware manufacturer is supporting it, or will ever do so. So gradations will always be a big issue with AVC, especially if you want to color grade things. It doesn't have to for HEVC... already there is hardware supporting 12 bit HEVC files.
Are you using DivX to decode/play videos? Don't... use MPC-HC, which has lavfilters built in, or use any other DirectShow compatible player and install lavfilters yourself. lavfilters does do hardware HEVC decoding already if you have a supported graphics card... not sure which ones are though, but I think it was fairly mainstream ones. Not sure if they are powerful enough though... I'm only using the integrated graphics of my Ivy Bridge.
Transcoding to a more editing friendly format is AFAIK quite common, and tools that make it easier are coming... It's a bit of a pain in the ass, but superior quality and being able to keep the original files without having to buy plenty of hard drives is worth it, IMHO.
The smartphone market is a problematic market for Samsung, there are plenty of Chinese competitors that make just as good if not better phones and sell them for much lower prices. It's very much plug and play to make a phone. But mirrorless cameras require more expertise, it's a market that has fewer competitors and fewer possible competitors, IMHO. I don't think they are giving up the camera market, they are doubling down on it.
The D810 is a FF sensor, and I don't think it can compete with the NX1 sensor... it's just a much bigger sensor, that's why in the end it's better.