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SI-2k Editing / Output


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#1 Landon D. Parks

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Posted 09 December 2006 - 01:48 PM

How difficult is it to edit and output the CineRAW data? Your talking 2k 4:4:4 resolution, which will require some serious processing power.

What would be a good way to be able to edit this full-res footage without having to go all out on a $100,000 computer setup? Is off line editing a option? If so, with what system. I would like to stay with Online editing, but what wouldn't it take a pretty major computer setup to edit this native footage?

I am looking at this camera more than the RED, because there saying the red may not ship until late next year! My only gripe with this camera is it's only got a 2/3" sensor, instead of the RED's S35 sized. Other than that, they seem like pretty much the "same" camera, in a way.

Also, I take it that RAW output is not color corrected or balanced in any way? So what program would you use to correct that footage? Basic Color Correction software, or a special program?

Thanks,
Landon

Edited by Landon D. Parks, 09 December 2006 - 01:50 PM.

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#2 Ari Presler

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Posted 09 December 2006 - 08:53 PM

Landon,

The CineformRAW codec enables you to edit real-time on-line on a Core 2 duo machine. This could even be a notebook. Yes, a notebook. This is because the decoder has the ability to extract a 1/4 res version of the image for preview and editing. Once you have completed you editing an color correction you output to full res 4:4:4 files. The same file operates as a proxy and full resolution digital negative. The workflow is really a major differentiator!

One of the exciting enhancement we made to the SI-2K system is the ability to do color grading using Iridas Speedgrade On-Set ($399). Grab an image from the camera, grade it and load the look into the camera. You will now see you footage shot live with the look applied. It also gets recorded as Metadata within the CinefromRAW files. When you play/edit the files the look can be applied, turned off completely and/or a new look applied. What can be simpler or more powerful?
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#3 Jason Rodriguez

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Posted 11 December 2006 - 04:04 PM

Hi Landon,


The basic premise behind CineForm editing is that "offline" is a thing of the past.

What basically happens, is that we have the RAW file encapsulated in the codec, which runs at around 12-13MB/s for 2K RAW. This is a 5:1 compression ratio. The codec, on a fast Pentium 955EE or Core 2 Duo machine is able to decode and render the RAW data in real-time as 4:4:4. Since the data is being decompressed into memory in real-time, it can be moved and manipulated very fast, with multi-stream effects, etc. So you're not pulling uncompressed 4:4:4 RGB from the hard-drive, instead you are decompressing the RAW file in real-time into memory. When the data is in memory, it can be accesed very fast, and quite a bit can be done (considering that memory bandwidth on a 925 chipset like the Penitum 955EE uses is 10GB/s). So using a combination of high memory (not disk) bandwidth and processing power, the CineForm stream can be manipulated in realtime, and that means a less expensive computer system since your not paying for gobs of hard-drives and speed for uncompressed editing.

For more information you should visit their website at www.cineform.com

But again, just remember that we have the RAW compressed file on disk which uses a low data-rate, and it's decompressed in real-time to 4:4:4 RGB in your computer's memory subsystem, and the data is processed and manipulated in real-time from memory using your computer's fast processor, and then sent to your screen or your video card. So hopefully that demonstrates how you can get such fast performance with 4:4:4 RGB editing without spending $100K on a computer system with requirements for hundreds of gigabytes per second of disk bandwidth.
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