Processor speed limit? at DVinfo.net

Go Back   DV Info Net > High Definition Video Acquisition > HD and UHD ( 2K+ ) Digital Cinema > Silicon Imaging SI-2K

Silicon Imaging SI-2K
2/3" 1080p IT-integrated 10-bit digital cinema w/direct-to-disk recording.


Reply
 
Thread Tools Search this Thread
Old April 6th, 2008, 09:59 PM   #1
Regular Crew
 
Join Date: Mar 2006
Location: Kathmandu, Nepal
Posts: 32
Processor speed limit?

What is the optimum limit for processor speed required to do the most difficult job using the SI DVR. Is there a point after which more processor speed is irrelevant for this camera.

I would assume the most difficult task using the DVR right now is doing 12bit Uncompressed at 2K 60fps at the highest settings?
Bhaskar Dhungana is offline   Reply With Quote
Old April 7th, 2008, 12:22 PM   #2
Trustee
 
Join Date: Mar 2003
Location: Virginia Beach, VA
Posts: 1,095
Quote:
I would assume the most difficult task using the DVR right now is doing 12bit Uncompressed at 2K 60fps at the highest settings?
Bandwidth-wise, yes . . . processing power, no.

1) you can't get 2K/60P . . . you can only get a max of 2048x1152 at 25fps, and 2048x1080 at 30fps.

2) CineForm RAW requires processing power . . . uncompressed requires disk-bandwidth.

3) The main GUI requires a good GPU, and if you don't have a good GPU, then it requires a good processor so that the display and the CineForm RAW recording can happen all at the same time.

Probably the biggest stress you could put on the system right now would be something like dual-screen bilinear display mode at full-screen 2K resolutions, CineForm RAW recording at highest quality, 2K/25fps, +12db gain (higher gain makes more noise which stresses the CineForm encoder more), audio recording, and floating point LUT's enabled with an active alpha-channel (green-screen key). Also make the histogram active during the live display as well (that eats up some CPU cycles).

Thanks,

Jason
Jason Rodriguez is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > High Definition Video Acquisition > HD and UHD ( 2K+ ) Digital Cinema > Silicon Imaging SI-2K

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 03:18 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network