ISO/IEC 14496-30:2018/Amd 1:2022
Information technology — Coding of audio-visual objects — Part 30: Timed text and other visual overlays in ISO base media file format — Amendment 1: Timing improvements
Information technology — Coding of audio-visual objects — Part 30: Timed text and other visual overlays in ISO base media file format — Amendment 1: Timing improvements
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 6
- Дата публикации:
- 21 июня 2022 г.
- Издание:
- ISO/IEC IS 14496 edition 2 version 1
- ICS:
- 35.040.40
Abstract
Overview
ISO/IEC 14496-30:2018/Amd 1:2022 is an international standard amendment focusing on timing improvements for coding timed text and other visual overlays within the ISO base media file format (ISOBMFF). As part of the MPEG-4 suite, this amendment enhances the synchronization accuracy of subtitle and overlay content during media playback. It revises timed text stream handling and refines timed text processing, particularly for TTML (Timed Text Markup Language) documents carried in media tracks.
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