data rates question.

[govindaBLU]

By what we know so far from RED's format options page http://red.com/product/format-options/

what, in your guys' estimation, will be the data rates coming out of the camera for

4k?
2K?
2540p?

just trying to make sense of the future one byte at a time...

thank you

[govindaBLU]

150Mb/s? 300Mb/s?

do you guys have any estimation for me?
How much is coming off the Viper? I can make an educated guess from that
thank you

[evinsky]

I think this info is NTK (Need to know) basis only while the camera is in development. Sufficed to say the Viper has about 2.978Gbs (355MBs) throughput at 1080P.

[Graeme_Nattress]

Full sensor full speed 60fps output is around 1GB/s, given that it's 12bit data. You can figure that number out yourself from the number of pixels, bit depth and fps. We're not ready to talk about compressed data yet.

Graeme

[FatBird19]

Full sensor full speed 60fps output is around 1GB/s, given that it's 12bit data. You can figure that number out yourself from the number of pixels, bit depth and fps. We're not ready to talk about compressed data yet.

Graeme

wait, that's uncompressed?

[Graeme_Nattress]

That's uncompressed data from the high speed port, yes. As Jim says, "Data to burn".

Graeme

[Greg Lowry]

4520 x 2540
RBG 444
12 Bit
60 fps progressive

Hmm, I calculate the data rate to be 3.1 GB/s (1.24 GB/s @ 24 fps). What am I missing?

[Proteus]

EDIT: My post is WRONG. Skip this one.

For raw uncompressed data your calculation is right.

I would underestimate it if I would say that this data rate is *just* HUGE.
If this is the case, it's the equivalent of about 1000 Z1s capturing simultaneously to a single computer!!!! :eek:
Or should I say ...supercomputer?

(3.1GB x 8=24.8Gb / 25Mb = 991)

[Greg Lowry]

yikes!

I'm aware of a flashmag under development that will record uncompressed 4K @ 60 fps. Presumably RED is working on something similar.

[baro]

4520 x 2540
RBG 444
12 Bit
60 fps progressive

Hmm, I calculate the data rate to be 3.1 GB/s (1.24 GB/s @ 24 fps). What am I missing?

This is raw data which means one 12 bit value from each pixel 60 times a second:

4520 x 2540 x 12 x 60 / 1024 / 1024 / 1024 = 7.7 Gbits = 0.96 GBytes

[Proteus]

Arghhh... IT'S THE BAYER PATTERN......
I thought it was 12bit RGB (12 x 3) SORRY! :embarasse

So to recalculate:
4520 x 2540 x 12 x 60 = 8 266 176 000 (8.26 Gbits) / 8 = 1 033 272 000 (1.03 GBytes/sec)

And my previous comparison with Z1's now will be :
8.26Gbits / 25Mbits = 330 Z1s !!! Now it seems ...easier! :D

Baro, thanks for waking us up, but I think your calculation is wrong. Where did you find those 1024s?

[baro]

I thought 1 Kbyte = 1024 bytes, 1 Mbyte = 1024 Kbyte, 1 Gbyte = 1024 Mbyte. Isn't that the way you count bytes?

[Proteus]

I thought 1 Kbyte = 1024 bytes, 1 Mbyte = 1024 Kbyte, 1 Gbyte = 1024 Mbyte. Isn't that the way you count bytes?

You are referring to mebibytes or MiBs (mega binary bytes). 1 megabyte = 10^6 = 1000000 bytes, 1 MiB = 2^20 = 1048576 bytes.

This is useful only in cases that there is strong relation to binary lengths, as in memory chips (RAM, ROM).
It is not used In data rates because there is no point and it is misleading especially when you refer to *bit* rates. You want the actual data rate...

Also the hard disk manufacturers use the megabyte unit to refer to capacities. I know it's confusing some times...

[Graeme_Nattress]

I think us old timers will always work in powers of two though. I think the definitions have been subverted from the originals for marketing reasons.

Graeme

[baro]

Now I learned something. Thanks.

[govindaBLU]

So by know roughly the data through-put, can one theorize that a super-computer can be built to capture data coming from red?... I mean can I build a pc that has a motherboard with two HD-SDI pci cards for capturing and then have a RAID BACKPLAN RACK with a few 500GB harddrives recording all the information? Would this be feasible? I would really like to build a personal computer JUST for the RED system than rent or buy one of these DFR systems:http://www.stwo-corp.com/services.htm

I mean can this basically be substituted for "homemade" version is my question for you guys?

I should make this into a seperate thread---hold on..

[Graeme_Nattress]

Well, RED RAID will do it, if you want to keep "in brand". Assuming you can hook up your PC to the camera (no, not over HD SDI for this, over some kind of fibre probably) then sure, you'll be able to record the datastream. You might need to write some code to spool it to a file, but no reason why it shouldn't work, and I don't think we're going to go out of our way to stop you, but I think RED RAID will be a better solution.

Graeme

[omen]

Well, RED RAID will do it, if you want to keep "in brand". Assuming you can hook up your PC to the camera (no, not over HD SDI for this, over some kind of fibre probably) then sure, you'll be able to record the datastream. You might need to write some code to spool it to a file, but no reason why it shouldn't work, and I don't think we're going to go out of our way to stop you, but I think RED RAID will be a better solution.

Graeme

Will there also be external versions of RED RAID ?

Maybe I'm missing something, but what kind of hard-disc technology (that can fit into this cam) is capable to record at 1GB/s ?
I thought large multiple disc arrays are unavoidable.

[Graeme_Nattress]

RED RAID is external. Internal recording is called RED DRIVE or RED FLASH.

Graeme

[omen]

ooops...
o.k. then. My bad.
Then it IS going to be multiple disc system.
I would choose that over Medea, guessing the design suits the cam...

I suggest the RED SYSTEM package....the cam, lens, storage
...and a keychain :Drogar-BigGrin(DBG)


- for everything else, there is G5....