Last Updated: May 5, 2016
Yes, all models but the HD600 support overlaying text or images on video.
You can display text over video using a Ticker zone; setting the Transparency to 100% in the Zone Properties of the Ticker zone will remove the text background completely, allowing the video to show through. You can also overlay text using a Live Text state (in an Images zone) on top of a Video Only zone or a Video or Images zone.
Image files that are displayed in an Images (or Video or Images) zone will automatically display on top of video zones. You can also use PNG images with transparency, and videos will play through the transparent regions of the PNG files.