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F3 + Ultrastudio 3D = no 4:4:4?

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Christoph Tilley
F3 + Ultrastudio 3D = no 4:4:4?
on Oct 28, 2011 at 8:09:04 pm

I got my Blackmagic Ultrastudio 3D yesterday and I was eager to try out 4:4:4 capture out of my S-Log enabled F3 with it. Unfortunately after several hours of trying I haven't been able to get a 4:4:4 capture done. Maybe you could help me:

My F3 is connected to the Ultrastudio 3D via two SDI-cables on the SDI A&B ports.

Scenario 1 (System -> HQ 1920/50i, Gamma -> 1.5G YPbPr422 & Video, Ultrastudio -> 50p):
I get 1080p50 in 422 and no S-Log. That works fine.

Scenario 2 (System -> HQ 1920/25p, Gamma -> 1.5G RGB444 & S-Log, Ultrastudio -> 25p):
I get a greenish strange looking image when I set the Ultrastudio to 25p.

Scenario 3 (System -> HQ 1920/50i, Gamma -> 3G YPbPr422 & Video, Ultrastudio -> 50p):
I get 1080p50 in 422 and no S-Log. That works fine.

Scenario 4 (System -> HQ 1920/25p, Gamma -> 3G RGB444 & S-Log, Ultrastudio -> 25p):
Black. No image. This would be my setting of choice.


I have a feeling that the Ultrastudio doesn't support any 4:4:4 streams. I looked that up in the specs but I can read everywhere that it should support 4:4:4 10bit capture. Hm. There is a setting in the system preferences for 4:4:4 but that just affects output.

Anyone?



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