A VTT file is a text file saved in the Web Video Text Tracks (WebVTT) format. It contains supplementary information about a web video, including subtitles, captions, descriptions, chapters, and metadata. VTT files do not contain any video data. The WebVTT format is designed to provide chapters for content navigation, text video descriptions, and other metadata aligned with audio or video content. VTT files are commonly used for captioning and subtitle formats. They are compatible with most major media hosting platforms and media players like VideoLAN VLC Media Player. VTT files are similar to SRT files, but they have some additional capabilities. For instance, with VTT files, the user can adjust the color, font, and placement of their captions. However, SRT files only allow for basic font formatting and placement adjustments. VTT files can be opened and edited using any text editor, such as Microsoft Notepad (Windows), Apple TextEdit (Mac), or GitHub Atom (multiplatform). They can also be viewed by dragging the file into any web browser. To use a VTT file as a subtitle track in VideoLAN VLC Media Player, the user needs to begin playing the video they want to use the VTT file with, select Subtitles → Add Subtitle File from the VLC Media Player menu bar, navigate to the folder containing the VTT file, select the file, and then select Open.