lucabutera

nx1

2 hours ago, vasile said:

 
Please take a look at the top of this - I am trying to keep it permanently up to date (not difficult :-). Kind regards.

edit: If you want a bit of background about my work, take a look at this (download into Excel preferable):

which your Paypal donation email?

1 hour ago, vasile said:

Battery pull means no battery whatsoever, the camera should have no power source. Turning off is not enough. If you have two batteries you need to pull both.

Will add this clarification to the next mod version.

Hi Vasile, thank you for your hack! Just a question: It possible internal 4.2.2 color subsampling or better clean raw file? Best

21 hours ago, vasile said:

http://***URL removed***/forums/thread/3988168

Welcome back and tank you!

1 hour ago, Andrew Reid said:

There's an easy way to test whether it is compression / video related or a limitation of 8bit, find a blue sky and shoot an H.264 4K clip of it and an 8bit JPEG.

Bet the 8bit JPEG is ok. I think it's more a compression or 6K sensor output to 4K scaling issue.

This make sense. If you try to shoot in 4K and in Uhd, banding and the macroblocks are more soft in 4K!

4 hours ago, SMGJohn said:

This is how

 

The first two steps are little messy... Can you explain me step by step? thank you!

New Cinemartin external recorder h265, Avi uncompressed, 1.2GB/s    http://blog.planet5d.com/2016/03/ultimate-all-in-one-device-cinemartins-world-first-5-6-uhd-qhd-monitors-4k-444-10-bit-recorders-with-pc-live-streaming-devices/

How to get development mode on Samsung nx1?

12 hours ago, Marco Tecno said:

As already said, with the lexar 2000x (fastest UHS-II card on the market now) the camera can continue at 15fps in super fine jpg when the buffer is full.

To do the trick one should enable silent e-shutter on NX1 (otherwise...bye bye shutter) and increase the fps at least to 24fps.

 

 

review of Lexar:

http://www.cameramemoryspeed.com/reviews/sd-cards/lexar-professional-2000x-uhs-ii-32gb-sdhc-memory-card/

Hello Marco, you can try your sd lexar 2000x how many frame continuous shooting can you record?

5 hours ago, Pavel Mašek said:

MB (megabytes) and not same as Mb (megabits = usual unit for bitrate). 170MB/s (megabytes per second) are 1360Mb/s (megabits per second)... so it is completely different level of bitrate.

Vasile hack provides +100Mb/s ( I do not want to brake his request about "not mention" bitrate :-)) so it is higher than default bitrate but still much lower than 170 MBps/1360 Mbps.

Your calculation is correct, but this my mastake makes it even more exceptional the processing power of the samsung nx1.
My experiment done with Samsung nx1 + Sd card GOBE 64GB 95MB / S read.
Test 1, 15fps- raw28 + jpeg super fine (40MB for both), buffer full, and camera stop after 131 files (600MB/s continuos shooting for almost nine seconds).
Test 2, 15fps, super fine Jpeg, 6480x4320, 143Mb / S, never full buffer, camera continuos shooting without stopping.
Test 3, 15fps, super fine Jpeg, 4682x2592, 62MB / S, 16: 9 aspect ratio, camera never full buffer, continuous shooting without stopping.
This test is proof that the system software and hardware of the camera are capable of internally recording unbelevable 143MB/s (with possible peaks of 600MB/s) and can shoot 30fps at 4682x2592 jpeg format super fine (124MB/s) without any problems!!

25fps in jpeg, 4608x2592, aspect ratio 16:9, picture quality "super fine", has a bit rate of about 100MB/s.
25fps in jpeg, 6480x3640, aspect ratio 16:9, picture quality "super fine", has a bit rate of about 170MB/s.
The Vasile hack has demonstrated that the Samsung nx1 is able to shoot video over 150MB / s so we are not very far from a new Magic Lantern for Samsung Nx1.

A idea, would be to try to change continuous shooting, in silent shooting, 24fps, UHD resolution, jpeg quality.

In my experience I can say that 4K at 24fps is better than Uhd 25fps, in spite of the files have a similar bit rates. Someone can explain why?

12 hours ago, SMGJohn said:

I have used the Shogun myself with the NX1 once on a short film, I did not notice much differences or gains so I just shot without it on difficult shots.

I think the NX1 only spits out the same bitrate its set in the menu out on HDMI, I might be terribly wrong but its what I think based on personal experience with the shogun and the NX1

With Shogun 8-bit 4.2.2 the problem of banding and macroblock it is still evident on in one color backgrounds. The problem turns up in the time of color correction.

Theories about the codecs are all to prove, only certainty is that the best results is take the raw. 

Take a look at this: http://www.videoconverterfactory.com/tips/h265vsh264.html

Wow! The Samsung nx1 bitrate is very grown! 

10 hours ago, Chant said:

Well remember HEVC is 2x better on average compared to h264 so at 240mbs it would be a 480 mbs h264 file and something like a 2400 mbs mjpeg file. I think its a 10x better compression to mjpeg that is in the canon cameras. I just did a color correction test to see what can be saved from the shadow detail and there is a ton of data. So at a higher frame rate it should be even better. 

Hello and thank you for your hard work. Do you think it would be possible to get a subsampling 4.2.2 in Nx1?

I want to thank all the guys who are working hard for our project to make great cameras Samsung NX1, and younger sister NX500.
Samsung one year ago, has introduced them in the market as spaceships and then abandoned them in our hands.
Internal Technology Samsung nx1 and NX500 (28mp BSI sensor, Drime V and Drime Vs engine processor, HEVC codec) is superior than all cameras which are still planned.
it is my belief to think that the processing power allows recording 4k in 4.2.2. without difficulty or 4k Raw internal recording and beyond.

On 6/3/2016 at 9:56 AM, sandro said:

8 minutes ago, sidi said:

14 hours ago, Chant said:

There has been a few stating that they would like to tip/donate, which would of course be muchhelp,, as I seem to be doing this more than my 9-5 haha! But it is not at a quantifiable stage at the moment, What I have found out is pretty much just a key, and if the key can open the lock is not yet determined. Even with the sdk things of this nature are not 100% 

At any step of the way if they did something undocumented it can halt progress to a point the modification cant be done. Ive been lucky so far with things is all!

But if knowing that what Im doing may not bring a firmware mod to light people still wish to donate then I can put something together. But I started this not knowing there was anyone wanting this camera modded, and I would still do this if no one wanted to tip/donate.

That being said the next stages of what I am doing are copious research. There are white paper behind paywalls but my local university seems to have most of the books on file so I will be acquiring those to get a better idea of the way samsung chose to code.

Personally I am also interested in the lens mount for a working adapter to other lens systems. So the control files are something I am also looking into. As well as if hevc is the best choice for encoding or if something like the redcoderaw would be more suitable which is just their modded version of mjpeg2000. dct vs wavelet is something interesting to read about. 

 

 

On 31/1/2016 at 6:05 PM, kidzrevil said:

the debut of the Samsung NX1 they showed the world that a new challenger has entered the 4k market. The specs spoke for itself and the stunning resolution & color reproduction spoke even louder. The camera did have a rough start but quickly addressed the issues with constant firmware updates. Image quality aside the most revolutionary feature of the camera is the Tizen OS. Samsung has releases the open source code to the NX line of cameras to the public and rumor is they have reached out to the Magic Lantern developers. This is great news for many reasons. 

1) this is the first time I have seen a camera manufacturer openly embrace the hacker community. The same community that has made Canon cameras so popular in the video arena and has pushed the GH2 into new heights.

2) this could inspire other manufacturers such as Panasonic, Canon, Sony & Fuji to release the open source codes to their future camera bodies

3) if a hack for the NX1 & NX500 were to go live we can see a tremendous increase in image quality and yet another tool to capture stunning images on a budget in a professional environment.

More than anything for an NX1 hack we need to double the existing bitrates. The camera supports high speed SD cards (SDXC UHS-II/U3 @300mbs) so it would make sense to increase the bitrate by at least double to avoid/eliminate macro blocking in the shadows and at high frame rates. Last but not least completely disabling in camera sharpening and noise reduction will help rid us of the electronic look. 

I as well as many other Samsung users on EOSHD and other forums would love to see this hack go live. If you feel the same and in the future will not have a problem with helping us crowd fund the project simply comment with : "+1". 
The more support we get the more likely this is to happen.

Please do not comment with why this shouldn't or couldn't happen. This is not what this thread is for. It is a show of support for a hack. Thank you for your time ! 

The Lexar sd card Professional 2000x UHS-II U3, can write 265mbs!

Italian nx1 user number 3 is here! I'm ready to make a donation!