.SMI File Extension

SMI files exist as 3 different types. Please find information about each of them below.

Type 1: Self-Mounting Disk Image

File extension .SMI refers to Self-Mounting Disk Image developed by Apple. SMI files were used on Macintosh before .DMG files. They allow CDs and disks to be available as downloads. When opened, a dis...

General Information

Title SMI File Extension
Extension .smi
Full Form Self-Mounting Disk Image
File Type Disk Image File
Developer Apple Inc.
MIME Type application/octet-stream

File Function

Primary Function Mount virtual disk
Additional Functions Software distribution, Data backup
Features Auto-mount, Compression

File Characteristics

Quality Depends on content
Supports Layers N/A
Supports Transparency N/A
Editable No

Use Cases

Software Installation Yes
Data Transfer Yes
System Recovery Yes

Security and Practices

Security Risks Malicious code
Best Practices Scan for viruses, Verify source

Historical/Version Information

Initial Release 1980s
Latest Version Deprecated

Associated Types

Similar Extensions .img, .iso, .dmg

Software Compatibility

Software Usage Policy OS Compatibility
Mac OS Classic Included Mac OS Classic
Disk Copy Included Mac OS Classic

Type 2: SMIL Presentation

General Information

Title SMIL Presentation File Extension
Extension .smi
Full Form Synchronized Multimedia Integration Language Presentation
File Type Multimedia Presentation File
Developer World Wide Web Consortium (W3C)
MIME Type application/smil+xml

File Function

Primary Function Multimedia presentation
Additional Functions Text synchronization
Features Interactive, Time-based

File Characteristics

Quality Depends on content
Supports Layers Yes
Supports Transparency Yes
Editable Yes

Use Cases

Web Presentations Yes
E-learning Yes
Audio Description Yes

Security and Practices

Security Risks Code injection
Best Practices Validation, Update player

Historical/Version Information

Initial Release 1998
Latest Version SMIL 3.0 (2008)

Associated Types

Similar Extensions .smil, .sml, .xml

Software Compatibility

Software Usage Policy OS Compatibility
RealPlayer Free, Premium Windows, Mac
Ambulant Player Free Windows, Mac, Linux
QuickTime Player Free Mac

Type 3: SAMI Subtitles File

SAMI files store subtitles as text. They were designed so CDs and floppy disks could be downloaded digitally. Double-clicking SMI files loads a virtual disk. When Mac OS X arrived, a DiskImageMounter ...

General Information

Title SAMI Subtitles File
Extension .smi
Full Form Synchronized Accessible Media Interchange
File Type Subtitle File
Developer Microsoft
MIME Type application/smil

File Function

Primary Function Display subtitles
Additional Functions Synchronize text with media
Features Supports styling, Synchronized with video

File Characteristics

Quality Text based
Supports Layers No
Supports Transparency Yes
Editable Yes

Use Cases

Accessible Media Yes
Video Playback Yes
Language Learning Yes

Security and Practices

Security Risks Low risk
Best Practices Validate input, Regular updates

Historical/Version Information

Initial Release 1998
Latest Update Incorporated into SMIL

Associated Types

Similar Extensions .srt, .sub, .idx, .ass

Software Compatibility

Software Usage Policy OS Compatibility
Windows Media Player Free Windows
VLC Media Player Free Windows, Mac, Linux, Unix
Jubler Free Windows, Mac, Linux