Blackmagic Forum

I'm trying to replicate the overlay effect used by Eddie AI in DaVinci Resolve.
When hovering over clips in the Media Pool, their viewer shows a floating overlay containing a full-sentence description — like: "The video shows a parking lot filled with various cars under the shade of tall trees..."

Here’s an example of the overlay I’m trying to replicate: https://postimg.cc/JD4N5cv5

I've tried scripting in both Lua and Python using:
SetMetadata("Comments")
SetMetadata("Description")
SetClipProperty("Clip Name", ...)

These update visible metadata correctly and allow for Smart Bins, markers, etc., but none of them populate the overlay in the viewer when hovering over a clip.

So my question is:
Which property or API field controls the hover overlay text shown in the Media Pool viewer?
Is this something only the Studio SDK can access? Or is there a hidden metadata tag exposed through scripting?

Thanks in advance for any help — I’d love to reproduce this workflow for scripted clip annotation.

That type of overlay is shown in the viewer when there is a marker with notes on the clip. Specifically in this case it is a marker with a duration, meaning it's a range as opposed to a point in time.