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What is an SMI file?
File extension
.smi
Alternative filename extension
.sami
Category
Subtitles file formats
Developed by
Microsoft
Mime type
application/x-sami
Format description
SAMI is short for Synchronized Accessible Media Interchange. Developed in the late 90s by Microsoft, SMI or SAMI files were an accessibility initiative by the company. Such files contain subtitles with formatting, extended from HTML. In other words, subtitle text in the SAMI format can be bolded, italicized, underlined, colored, and more. SAMI files are used along with video files as closed captions.
Common questions about converting to SMI
Can I convert to SMI in bulk?
Yes, MConverter supports batch converting to SMI. You can even drag and drop folders to convert to SMI. Pasting files and folders copied in the clipboard also works: use Ctrl+V.
Can I convert a file to SMI, if its size is 2 GB?
Yes, with MConverter Pro you can convert big files, up to 2 gigabytes each. The free version lets you convert files up to 100 MB. If you need to convert files over 100 megabytes to SMI, try MConverter Pro. If your files aren’t over 1 GB, then you can use MConverter Plus instead, as it’s cheaper.
Is converting to SMI safe with MConverter?
Yes, we encrypt your connection using industry standards. Plus, your files are only accessible by you. 4 hours after the conversion completes, they are automatically deleted from MConverter’s servers. You can also delete your files immediately after finishing the conversion by clicking the bin icon. Join thousands who have trusted us to convert over 12,470,861 files so far.
How long does it take to convert a file to SMI?
For most files with subtitles, the wait is just one or two seconds. However, MConverter also supports converting larger files with subtitles, meaning that it could take a while (up to over an hour, for example).