Captions Captions SiteCam lets you add up to four text messages to your video image. Each caption can contain static text, time stamps, and date stamps. You can select a font, size, style, and color for your text captions. There is also a transfer mode which changes how the text is drawn on the video image.
Text can be vertical, as well as horizontal.
It can be used to help determine how many images are being streamed per second. It is incremented each time the caption is drawn. Its usage is subject to change in the future.