Files with smi extension can be often found as subtitles in Microsoft's Synchronized Accessible Media Interchange (SAMI) format.

There are 5 other file types using
the SMI file extension!

empty icon.smi - Daylight SMILES data

smi icon.smi - IBM Lotus smart icons

smi icon.smi - Mac Self-mounting disk image

empty icon.smi - Siemens mobile phone inbox SMS data

empty icon.smi - Synchronized Multimedia Integration Language presentation

SMI file extension - Microsoft SAMI subtitles

What is smi file? How to open smi files?

File type specification:

Text file type icon Text file type

File extension smi is mainly related to SAMI (Synchronized Accessible Media Interchange) subtitles format developed by Microsoft. It is based on both HTML and CSS and stores subtitles in a text based format.

Nowadays, this format is somewhat rare, because most subtitles are in common formats like SRT or SUB.

Updated: November 30, 2023

The default software associated to open smi file:

Microsoft Windows Media Player icon

Microsoft Corporation logoMicrosoft Windows Media Player  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Windows Media Player is default multimedia player installed in Microsoft Windows. WMP can manage music, videos and pictures in computer, play or view them, sync them with portable devices, or burn them on CD/DVD media. It also supports home media sharing with other computers.

Related articles:

How to watch movies with subtitles

Help how to open:

Several media players still support *.smi subtitles.

How to convert:

Some subtitles editors and converters may still support SMI format and convert it to one of the newer formats.

Find conversions from smi file:

smi to aqt

smi to ass

smi to mp4

smi to srt

smi to ssa

smi to sub

smi to txt

Find converter to smi file type:

srt to smi

sub to smi

txt to smi

List of software applications associated to the .smi file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open smi file, edit smi file, convert smi file, view smi file, play smi file etc. (if exist software for corresponding action in File-Extensions.org's database).

Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting smi files.

smi file players - programs that can play smi file - Microsoft SAMI subtitles

Programs supporting the exension smi on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for play smi file action.

Microsoft Windows:

Main software associated with smi file by default:
Microsoft Windows Media Player small icon Microsoft Windows Media Player
Other suggested software:
VLC media player small icon VLC media player
KMPlayer small icon KMPlayer
Apple QuickTime small icon Apple QuickTime
MPlayer small icon MPlayer
GOM Media Player small icon GOM Media Player

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