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ISO/IEC 14496-30:2014
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Information technology -- Coding of audio-visual objects -- Part 30: Timed text and other visual overlays in ISO base media file format

Abstract

ISO/IEC 14496-30:2014 defines a storage format based on, and compatible with, the ISO Base Media File Format (ISO/IEC 14496-12 and ISO/IEC 15444-12), which is used by the MP4 file format (ISO/IEC 14496-14) and the Motion JPEG 2000 file format (ISO/IEC 15444-3) among others. ISO/IEC 14496-30:2014 enables timed text and subtitle streams to

  • be used in conjunction with other media streams, such as audio or video,
  • be used in an MPEG-4 systems environment, if desired,
  • be formatted for delivery by a streaming server, using hint tracks, and
  • inherit all the use cases and features of the ISO Base Media File Format on which MP4 and MJ2 are based.

 

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