Open font format

Realizing the importance of the text component in media, MPEG has been working on standardization of font formats, in particular ISO/IEC 14496-22 Open Font Format since 2004. The standard has been widely deployed and is supported by virtually all connected devices where text is displayed on screen. In January 2020, MPEG promoted the first amendment of ISO/IEC 14496-22 4^th edition to Final Draft Amendment. The 4^th edition of the Open Font Format defines a set of technical tools that would be necessary to create fonts that support multiple different languages and writing systems. It enables different applications to reliably parse the font data that may be exchanged as part of the media content (e.g., on the web). This amendment enhances the standard by improving the font tools that are needed to support complex requirements for text layout including specific font features that are designed to support the required functionality for vertical writing.