Synchronized Multimedia Integration Language
SMIL (pronounced "smile")

SMIL 1.0 is a W3C recommendation, approved in June 1998
SMIL 2.0 was released in August of 2001
SMIL is a mark-up language that allows you to write interactive multimedia presentations and deliver them over the Web. SMIL lets you combine audio, video, images, and text and present each component at the proper time.
A SMIL file is a text file created with a simple text-editor. The mark-up language used is eXtensible Markup Language (XML). XML is a World Wide Web Consortium (W3C) specification.
HTML+TIME (Timed Interactive Multimedia Extensions) is a proposal to the W3C by Compaq Computer Corporation, Macromedia Inc. and Microsoft Corporation as a way of extending SMIL 1.0 functionality into HTML and Web browsers.
HTML+TIME as defined by Microsoft.
Synchronized Accessible Media Interchange (SAMI) is Microsoft's specification for captioning. The SAMI file format specification is available to the public as an open standard. Microsoft, Apple and Real have created their own formats for SMIL files.

Microsoft uses SAMI files, Apple uses QTtext format and RealPlayer uses RealText format.
QuickTime and SMIL is an overview of SMIL and the Apple QuickTime specific attributes that can be applied to a SMIL file.
RealSystem iQ Production Guide provides detail information on creating RealText files.
Media Access Generator (MAGpie) create SMIL files for Microsoft, Apple and Real players.
GRiNS Editor for RealOne

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