@DMZ that's the wiser's way - with both hands (twisting the neck of knowledge) :P

For people who has the Nx1 and don't want to use either Samsung soft or hybrid, here's another free app (also invoking ffmpeg) to convert to h264 or proRES - direct download link -- http://www.mydiyworld.net/?p=1805&aid=1815&sa=1

What this software can do?
* Can convert multiple source movies.
* Can set target directory where the converted files will be created.
* Can encode to H.264 or ProRes 422 Proxy, LT, SQ and HQ codec.
* Can resize the 4K source to 1080P or keep the original resolution.
* Supports one or mutlitple files Drag & Drop. If a folder is dropped, it will be used as “Output Folder”, otherwise all MP4 files will be added in “Source Files” list.

Source: http://www.mydiyworld.net/?p=1805

PS
If by any chance you'll use hybrid, for downscale purposes use bicubic spline not lanczos and remember with Karl's script you can get proRES444 output (slower 'cause only working in kostya)

About the Camera5d review, most funny thing is Andrew Reed which is a fucking clown with no spine whatsoever taking advantage of the conjecture (smart-ass, that is what he's good at) trying to sound impartial and unbiased; just fucking LOL... in my dictionary there's nothing more dangerous that someone who has the skills (does't imply having an engineer degree, which is the case) but absolutely ZERO ETHICS at all

Oh yes, the camera5d review is a bad joke. the author must have been drunk. I sell my GH4 and all the lens stuff for the nx1 and I'm really happy now. no juddering ois lenses, great aps-c fullsensor readout without cropping, a wonderful autofokus, very clean video with nice colors and whitebalance out of box, a fantastic tilt oled lcd and so on. For all this stuff, I can live with the rendertime for h265 to prores. I don't understand, what does he mean with "absolute useless for video" ???

If you are considering buying the NX1, I suggest you do not read the http://www.cinema5d.com/lab-review-samsung-nx1-video-mode-frustrating/ review without the comments below that review.

Samsung tried to create something bold with h.265 in the NX1 and a nice video image in high resolution, but the implementation didn’t quite work. The camera cripples itself in so many ways it becomes almost useless.

We tested all ISO settings from 100 up to the camera’s limit of 25600. Interestingly this is the first camera we ever saw that has a consistent 10.1 stops without any shift in brightness throughout the whole range up until ISO 3200.

http://www.cinema5d.com/lab-review-samsung-nx1-video-mode-frustrating/

I am not fan of their "lab tests", DR measurements looks wrong (as their previous issues with same test), and idea to use old iMac for conversion without understanding H.265 is weird.

Does this mean this cam has a great hack future? Easy to hack?

No, it does not mean anything.

To answer the question posed earlier by myself and addressed also by DMZ:

"the NX1 has a front curtain electronic shutter, so not completely silent..."

says the author of this page: https://www.wimarys.com/samsung-nx1-extensive-iso-test/

In stock at http://www.adorama.com/ISGNX1.html

PowerDirector 13 has stability issues. It has currently 137 1-star ratings out of 397 reviews on Download.com. The spec looks great but it will need a bunch of patches before it becomes useable. (http://download.cnet.com/CyberLink-PowerDirector/3000-13631_4-10483012.html)

For the brave ones: PD 13 Ultra is on sale for around $70 for the next 3 days: http://www.cyberlink.com/stat/events/enu/2014/Q4/PPC_PDR_BlackFriday_B/index.jsp

It has silent shutter yes. This software can edit h265 natively. Anyone used it? http://www.amazon.com/Cyberlink-PowerDirector-13-Ultimate-Suite/dp/B00N4OLGPM/ref=sr_1_6?ie=UTF8&qid=1417165720&sr=8-6&keywords=powerdirector+13

How is the shutter noise/performance on the NX1? So many Sony a7s owners complain about the explosive noise of the shutter on the a7s.

Does the NX1 have a "silent" i.e. electronic shutter only option like the Panasonic gh4, lx100 etc?