本文件规定了DCDM字幕文件的格式。DCDM字幕文件包含一组 将渲染文本或图形覆盖层放置在不同组图像上的精确位置的说明 电影相框。DCDM字幕文件是D-Cinema构图和 可能存在于数字电影包（DCP）文件集中。因此，它的设计反映了 其他DCP文件格式。DCDM字幕文件格式不适用于流媒体应用程序。

This document specifies the format of a DCDM Subtitle file. A DCDM Subtitle file contains a set of instructions for placing rendered text or graphical overlays at precise locations on distinct groups of motion picture frames. A DCDM Subtitle File is an integral component of a D-Cinema composition and may be present in Digital Cinema Package (DCP) file sets. Consequently, its design reflects features of other DCP file formats. The DCDM Subtitle file format is not intended for use in streaming applications.