[AG-TECH] HD devices within an Access Grid setup

Griebel, Keith Keith.Griebel at sdstate.edu
Thu Jun 17 10:47:18 CDT 2010

Hello Cristoph and Everyone,

We are currently trying to get this type of setup (Sony EVI-HD1 using HD-SDI to Blackmagic Decklink SDI card) operational and have not been able to quite hammer it out yet with Vic.  We have tried H264 and the HDMI Vic beta 1.1 along with about every other version of Vic we could get our hands on with no success as of yet.  Which version should we be using?  Our dedicated capture computer consists of 2 Intel Xeon X5550 (2.66 8M/1333 quad core) processors and 4GB of RAM running Windows 7 64bit.  We are able to see the video successfully with the Blackmagic Media Express program, so it appears the camera, capture card, and driver are working properly as far as we can tell...  AG seems to successfully add the card but all we see is black video with around 18fps and small numbers coming through for bitrate at best.  The processor demand of the Decklink Vic process is around 5% while a standard H261 Vic stream is around 1%, so it seems there is some processing going on behind the scenes, but all we see is black.  Either that or Vic crashes in certain modes...

We would be very appreciative if someone using Blackmagic Decklink SDI capture cards successfully could please share their configuration secrets with us!!

Many Thanks!

Keith Griebel
Communications Technician
Classroom Technology Services
South Dakota State University
Pugsley Center 205A, Box 2218A
Brookings, SD 57007

Phone: 605.688.6111
Email: keith.griebel at sdstate.edu

-----Original Message-----
From: ag-tech-bounces at lists.mcs.anl.gov [mailto:ag-tech-bounces at lists.mcs.anl.gov] On Behalf Of Christoph Willing
Sent: Thursday, June 17, 2010 1:00 AM
To: Jason Bell
Cc: Ben Joseph; ag-tech at mcs.anl.gov
Subject: Re: [AG-TECH] HD devices within an Access Grid setup

On 17/06/2010, at 3:31 PM, Jason Bell wrote:

> G'day All
> Quick question.  I have a colleague interested in using HD devices  
> within an Access Grid setup.
> Obviously they are looking to use the "Blackmagic Design Intensity  
> Pro" capture cards, but I was wondering if anyone had any advice  
> with HD cameras that have HDMI output?  Does anyone have any  
> particular setup that they are currently using?  Obviously there are  
> many "handy cam" cameras, but having P/T/Z capability would be a  
> huge benefit.

Sony EVI-HD1 - its not HDMI but includes component output which the  
Intensity Pro accepts OK (it was only the old "non-Pro" version which  
was HDMI only - I don't think its available any more).

This camera also has an HD-SDI output which is ideal if you need  
longer cabling lengths (through ceilings, wall cavities etc). In that  
case you need the Blackmagic Decklink SDI board.

We've tried both outputs from this camera and they work great.


Christoph Willing                       +61 7 3365 8316
QCIF Access Grid Manager
University of Queensland

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