4K resolution input

[julien]

Hi,
did someone use a 4k input card on Catalyst
i tested a Blackmagic Thunderbolt ultrastudio 4K but Catalyst converted a 4K resolution to a HD resolution.
it is the same with the Decklink 4K Extreme 12G Pci card.

[Semillion]

Beware of the Blackmagic 4K, it is not true 4k and will only input at 25/30fps and not full 50/60fps.
Ended up sticking with 1080@50p for cleanness of image.

S

[mlorenz]

I used an AJA io4k

Did you check the Blackmagic settings in the control panel... maybe the downconversion was active

[Semillion]

I would always take AJA over Blackmagic for input support and latency.

S

[samsc]

just didnt work when i tried to make it work-

[tylerr]

I have the AJA io4K working on my desk right now. mlorenz have you had any luck accessing multiple inputs on the AJA as in SDI 1 & 2? I am hoping i don't need one Aja per input and can use the 2 SDI's and the HDMI as discrete inputs into catalyst.

[mlorenz]

I used the aja io4k with the 4k input-option and 4 SDI inputs.
So 4 Full-HD quarters, in the catalyst input in then cropped thoses quarters
With the SDI1 and 2 you can only use once at a time when setting the card to Full HD

[kiwi]

Is the AJA IO4k a better option than the phoenix cards? how is the latency on the inputs?

[rolfwenzel]

Is the AJA IO4k a better option than the phoenix cards? how is the latency on the inputs?

Hey Paul,

I can't say that the AJAs are the better Option as I never compared them side by side, but just my feeling says that the AJA 4K got less latency (and you can input 50/60 HZ)...

As a long term Phoenix User I switched to AJA 4K last year, when I upgraded my Catalysts to the recent Macs and definitely no regrets!

Best

Rolf

[julien]

with aja io4k could you use it for 4 differents inputs 1080i50hz ?

[rolfwenzel]

with aja io4k could you use it for 4 differents inputs 1080i50hz ?

Hey Julien,

you can use the 4 different inputs with 1080P or PsF. The trick is to configure the AJA to 4K input in the desired Hz Range and as this 4K input will be handled with four quadrants and so 4 SDI Streams you just need to crop it in the Catalyst input section..

All Input Streams need to have the same resolution and Rate..

Best

Rolf

[tylerr]

Bottom line on this is that you can only input 1920x1080 into catalyst at this point.

I have tried the following: Aja IO 4K, Active Silicon Cards in a Sonnet case, Blackmagic UltraStudio 4K, and Blackmagic UltraStudio Express.

All of them work just fine. I cannot comment on latency as i never really looked at them side by side.

Active Silicon Cards: Richard has invested a lot of time making them work and they do just that work. Every Time!
Aja IO 4K: works, flexable, but you only get access to one input at a time. Also that is not switchable via catalyst. Maybe you could script that?
Blackmagic UltraStudio 4K: Expensive and very picky on what signals it likes. For example it wants a non standard version of 3G SDI. Fail.
Blackmagic UltraStudio Express: Great for the price and you can get 2 to work on the same machine at the same time. Downside is no thunderbolt feed through.

Hope that helps!

I am now using the Active Silicon Cards and sometimes the Blackmagic UltraStudio Express depending on the project.

[julien]

is ultrastudio 4K working with UHD resolution ?

[samsc]

is ultrastudio 4K working with UHD resolution ?

not stable enough to be usable