How to Add Idle Avatar or Silence at End of Generated Video Using API

Hello Heygen Team,
I'm using the Heygen API to generate videos from text input. The output is mostly great, but I’ve noticed that in some videos, the avatar’s eyes are closed in the final frame, which affects the visual polish.

To work around this, I’d like to add a few seconds (e.g., 5 seconds) of silence or idle avatar time after the speech ends. This would allow me to trim or edit the final video more cleanly.

Is there currently a way to add a silent or idle section at the end of the video using the API- where the avatar remains in a natural resting pose without speaking? Any guidance or workaround for this would be appreciated.

Thank you!