File Extension IDX

Information about IDX files and how to open them

A IDX - Movie Subtitle File contains text-based information that is designed to be synced up and watched in conjunction with a video file on a computer. The closed captioning information that is commonly associated with both movies and television shows is stored in the IDX file for reference. The user's video playback software of choice will then use both the time code information contained in the file and the associated text to sync the subtitles for playback with the actions and dialog that are taking place on screen.

Product(s) that can open IDX file

Microsoft Outlook Express
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