i am experiencing very strange issue when i cannot get 4k (4096x2160 24p) on SDI out of US4K. My system config is:
- Mac Pro 2013 , 64GB, 12 core Xeon 2,7 , GPU 2x AMD D700
- Blackmagic Ultra Studio 4k
- DaVinci 12,5 Studio
- Mac OS Sierra 10.12.5
- Desktop Video 10.9.5
When i set 4k output in DaVinci (or try play 4k file with MediaExpress) i get color distortion on output (everything in grey and green) and 2k resolution. Everything up to 2k works fine.
I tested: Adobe Premiere, FCP X, DaVinci - i can't get 4k from any source via SDI. HDMI works well.
I tried with another mac 2013 with same config - same thing. I tried on other mac with different RAM and CPU - 4k works well.
Maybe someone has this and can advise something? Thanks!