Mixing HD and SD with ATEM TV Studio

I was wondering if it is possible to mix together HD and SD with the ATEM TV Studio. To be more specific we need to connect two HD cameras using HDMI and one Standard definition camera using SDI... Is this possible or is there a work around?

Any information would be appreciated.

Not possible with the ATEM's by themselves as EVERY input must be in the exact same format/resolution/frame rate as the ATEM is configured for. If you want to have an SD source you will need to "upscale" it to the same format/frame rate as the ATEM.

This might help with that SD SDI camera and upconverting it to the correct HD format http://www.bhphotovideo.com/c/product/686604-REG/Blackmagic_Design_CONVMUDC_Mini_Converter_UpDownCross.html