Mon Oct 29, 2012 2:57 pm
Because that delay is introduced inside the ATEM depending on several factors. Having the audio embedded or not is irrelevant. Do a bit of searching on this forum for a more detailed explanation of the reasons for this.
The delay may not be significant for you to worry about (if it is just 1 frame). But... If you are expecting zero delay - you may have been caught out.
ATEM 1/ME, TVS, Hyperdeck Studio, Fujitsu Lifebook NH751 USB3