shows the input only 50p/50i frame rate on Atem studio hd .

I am new for the live switcher . So either i am missing some setting or there is a problem, my Sony a 6000 , Sony a7s or old Sony HVR z7 shows the input only 50 p or 50i frame rate on my new Atem television studio hd . When i try to other setting ie 25/24 /23.98/29.97 etcs there is blank . How can i set them to those settings ?

Rajan, you need to check your camera manuals to see if the actual video output resolution can be set to 1080p24/25/30. Many of the cameras, especially older ones like the HVRz7 can only output 1080i50/59.94 and not the higher bandwidth 1080p24/25/30, as the older Sony probably only has HDMI 1.5 standard support which only had enough bandwidth for 1080i 50;59.94or 720p.

The newer cameras may be switchable to a true 1080p output (supported by HDMI 2/2.x), connect them to a TV monitor and you can see what the actual output resolution is, (some monitors require pressing the “info” button.
Cheers