From http://www.w3schools.com (Copyright Refsnes Data)
SMIL is a language for describing audiovisual presentations on the web.
SMIL (Synchronized Multimedia Integration Language) was designed to enable multimedia presentations on the web.
A SMIL presentation can be composed of audio, video, images, text, and other media types.
You can read more about SMIL in our SMIL Tutorial.
HTML+TIME stands for Timed Interactive Multimedia Extensions for HTML. It is a proposal for adding SMIL 1.0 timing and synchronization support to HTML.
HTML+TIME was submitted to the W3C by Microsoft, Macromedia, Compaq/Digital and Digital Renaissance.
You can read more about HTML+TIME in our SMIL Tutorial.
HTML+SMIL (a modification of HTML+TIME) was included in an early SMIL 2.0 Working Draft.
When SMIL 2.0 became a W3C Recommendation, HTML+SMIL was removed from SMIL 2.0 and added as a separate Working Draft named XHTML+SMIL.
XHTM+SMIL provides support for SMIL 2.0 functionality like animation, media, timing, synchronization, and transitions directly in XHTML.
You can read more about XHTML+SMIL in our SMIL Tutorial.
| Specification | Draft / Proposal | Recommendation |
| SMIL 1.0 | 15. Jun 1998 | |
| SMIL 2.0 | 07. Aug 2001 | |
| SMIL 2.1 | 13. Dec 2005 | |
| HTML+TIME | 18. Sep 1998 | |
| HTML+SMIL | 22. Jun 2000 | |
| XHTML+SMIL | 31. Jan 2002 | |
From http://www.w3schools.com (Copyright Refsnes Data)