Hello,

I am using a DeckLink Duo 2 (SDK 14.4) as an output device in vMix with Fill/Key output set to 1080i59.94.

When monitoring the signal on a broadcast monitor with underscan enabled, I can see a single horizontal green line at both the very top and the very bottom of the image on the Fill signal. This occurs consistently when using external output from vMix.

Since the lines are only visible in underscan mode, I assume they may be outside the active picture area, but I would like to confirm whether this behavior is expected or considered normal for the signal.

Has anyone experienced the same issue, or can confirm if this is by design?

Thank you.