We really need your help.
We are shooting a movie and searching for a solution how to capture video from HDMI port of Canon 5D Mark II to an iMac 27 inch in real time. The iMac doesn't have an HDMI port. We have a Mini DisplayPort to HDMI adapter, but it's not bidirectional so we can't use Mini DisplayPort for input.
Is there any way to capture video in our case? Are there other adapters that are bidirectional or something else?