What is the action of crawl titles in a video?

Crawl titles serve a specific purpose in video editing and are used to display text that moves horizontally across the screen. This technique is often employed for credits, news tickers, or other types of information that need to be read in a sequential manner while remaining visible for a period.

The horizontal movement of crawl titles allows for a smooth visual flow and ensures that viewers can read through the information at a comfortable pace. This differs from other title types such as roll titles, which typically move vertically, or static titles that remain fixed in one position on the screen.

This clarity in motion enhances the viewer's experience, making it easy to convey messages or credits without overwhelming the visual composition of the video.