Alright... I actually had some time this week to play with these SDI input cards that have been sitting on my desk waiting for me for weeks.
I have 2 different cards by the same company BlackmagicDesign - the Decklink SDI, and the Decklink Duo.
They are both HD/SD-SDI cards, the only difference is that the Decklink Duo has 2 seperate SDI inputs.
The Decklink SDI (the single) I played with for hours trying to get it to work, intalling several different drivers, different software different ports, different BIOS settings but no matter what I did or who I spoke with at Blackmagic, I could not get it to work. What I was experiencing with my hardware was that after installation when booting it would sit at the Windows Logo screen anywhere from 1 minute to 5 minutes loading, but if I waited, Windows did actually load. After it was in Windows, everything would work fine, PB and any other program I could find. It worked UNTIL I loaded the capture card into PB or ANY OTHER WINDOWS PROGRAM. No matter what settings I had (ones I had myself, and other ones I went through support for) the entire machine would freeze. Windows, the mouse... The CAPS LOCK light wouldn't even light up on the keyboard when pressed. After hours with this, I gave up.
Then on an entirely different computer, I installed the Decklink Duo with the latest drivers and software, opened PB and it worked like a dream! Because it is a dual card, Windows (and PB) sees it as two different cards. I set up 2 Folsum Image Pros put input one on layer 1-6 and input 2 on layer 7-12, scaled them, started them rotating, and changed some colours on others and let it run for about 30 hours. It maintained the same latency of 2 FRAMES! but it was a little jittery after all this time. After further inspection, I discovered that the capture card its self was running at approximatly 55 degrees celcius, I cooled it (with a spray) and it worked fine. This just means that I have to cool my Coolux better... sorry couldn't resist.
DSC_0449LORES_001_01.JPG
To sum it up, I started researching with Blackmagic at the recommendation of Andre Girard, and with the result of 2 frames of delay, I am more than happy with Blackmagic. Also with a price tag of approx $500CDN for 2 inputs it definatly does the trick.
As for what I'm running this card on,
Intel i7 920 @ 2.67GHz (dual core)
3 GB of RAM
NVIDIA GeForce GTX 260
Decklink Duo HD/SD-SDI
Pandoras Box MP Pro
Hope this helps.
Justyn
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