Convert srt and smi subtitles

Here's a very simple Ubuntu tool for converting between the two. It uses the command line.

First, install libsubtitles-perl by running:

sudo apt-get install libsubtitles-perl

Next, navigate to the directory your subtitle file is in, then use one of these two commands to convert:

SMI -> SRT

subs -c srt filename.smi -o filename.srt

SRT -> SMI

subs -c smi filename.srt -o filename.smi

And that's it!

I also discovered an online tool that seems to do the job:

https://subtitletools.com/convert-to-srt-online