While many replay machines (such as EVS) embed diagnostic data about their currently played content in a dedicated video output, Evertz's Dreamcatcher machines instead can output the data as Ancilliary data (ANC) in the main output video signal. This is done by configuring the Dreamcatcher output to have the embedded data be the "superout" signal, rather than blanking or passing through the ANC data from the recorded clip.
Dreamcatcher Superout data uses a DID of 0x53 and SID of 0x40, which are vendor specific and officially allowcated or defined by SMPTE. The data is sent in the Luma substream on line 12, horizontal offset 0, and has a User Defined Word (UDW) length of 92 bytes.
All data is formatted as MSB unless otherwise specified.