Do BrightSign players support overlaying text or images on video in BrightAuthor:connected?

Yes. All models, except the HD600, support overlaying text or images on video.

Text

The only way to display text over video is to use a Live Text state (in an Images zone) on top of a Video Only zone or a Video or Images zone.

Images

Image files that are displayed in an Images (or Video or Images) zone will automatically display on top of video zones.