Simultaneous Encoding refers to the process of creating subtitles or captions that are synchronized with the audio or video content, enabling viewers to read the text as they watch. It involves using HTML markup formatting to enhance the visual appearance and formatting of the subtitles. This markup formatting allows for the customization of the subtitles, making them more visually appealing and easier to read for individuals with hearing impairments or those who prefer to consume content with subtitles.

HTML markup formatting provides various options for styling subtitles, such as changing the font size, color, style, or adding additional visual elements like highlighting, italics, or bold text. Additionally, markup formatting can be used to position the subtitles on the video, altering their position, size, or background to avoid obstructing important visual elements.

By employing HTML markup formatting, simultaneous encoding facilitates the creation of subtitles that are not only functional but also aesthetically pleasing. This enhances the overall viewing experience, making content more accessible and enjoyable for a wider range of audiences.